Katja Langen

Department of Radiation Oncology
Professor

(404) 251-2840
katja.langen@emory.edu

Overview

Katja M. Langen, PhD, serves as Associate Director of the Division of Medical Physics in the Department of Radiation Oncology and as Director of Proton Physics at Emory Proton Therapy Center. Dr. Langen joined the department faculty and the medical physicist team at Emory Proton Therapy Center in 2019. Prior to Emory, Dr. Langen was Associate Chief of Proton Physics at Maryland Proton Treatment Center.

Dr. Langen is an active member of the American Association of Physicists in Medicine's Therapy Physics Committee. She is also a member of the Varian Advisory Committee on Proton Therapy.

Education

Degrees

PhD from University of Wisconsin–Madison

Research

Publications

Validation of Patient-Reported Outcomes in Patients With Nonmetastatic Breast Cancer Receiving Comprehensive Nodal Irradiation in the RadComp Trial.
Int J Radiat Oncol Biol Phys Volume: 120 Page(s): 149 - 161
09/01/2024 Authors: Hahn EA; Pugh SL; Lu HL; Vela AM; Gillespie EF; Nichols EM; Wright JL; MacDonald SM; Cahlon O; Baas C
Dosimetric Evaluation and Reproducibility of Breath-hold Plans in Intensity Modulated Proton Therapy: An Initial Clinical Experience.
Adv Radiat Oncol Volume: 9 Page(s): 101392
03/01/2024 Authors: Sabouri P; Molitoris J; Ranjbar M; Moreau J; Simone CB; Mohindra P; Langen K; Mossahebi S
Initial experience and patient tolerance of proton stereotactic body radiotherapy.
J Radiosurg SBRT Volume: 9 Page(s): 121 - 128
01/01/2024 Authors: Ali N; Zhou J; Eaton BR; Switchenko JM; Cao Y; Stokes WA; Patel PR; Langen KM; Slopsema R; Bradley JD
Effect of the initial energy layer and spot placement parameters on IMPT delivery efficiency and plan quality.
J Appl Clin Med Phys Volume: 24 Page(s): e13997
09/01/2023 Authors: Zhu M; Flampouri S; Stanforth A; Slopsema R; Diamond Z; LePain W; Langen K
Characterization of 250 MeV Protons from the Varian ProBeam PBS System for FLASH Radiation Therapy.
Int J Part Ther Volume: 9 Page(s): 279 - 289
01/01/2023 Authors: Charyyev S; Chang C-W; Zhu M; Lin L; Langen K; Dhabaan A
Validation of a CBCT-Based Online Evaluation Workflow for Proton Therapy
Volume: 49 Page(s): E871 - E871
06/01/2022 Authors: Chang C; Nilsson R; Andersson S; Bohannon D; Lin L; Patel S; Patel P; Langen K; Bradley J; Liu T
Efficient Pencil Beam Scanning Proton Treatment for Cranial-Spinal Irradiation
Volume: 49 Page(s): E877 - E877
06/01/2022 Authors: Zhu M; Stanforth A; LePain W; Pasha M; Langen K
Simultaneous dose and dose rate optimization (SDDRO) of the FLASH effect for pencil-beam-scanning proton therapy.
Med Phys Volume: 49 Page(s): 2014 - 2025
03/01/2022 Authors: Gao H; Liu J; Lin Y; Gan GN; Pratx G; Wang F; Langen K; Bradley JD; Rotondo RL; Li HH
Intensity Modulated Proton Therapy Treatment Planning for Postmastectomy Patients with Metallic Port Tissue Expanders.
Adv Radiat Oncol Volume: 7 Page(s): 100825
01/01/2022 Authors: Zhu M; Langen K; Nichols EM; Lin Y; Flampouri S; Godette KD; Dutta SW; McDonald MW; Patel SA
Rapid Comparative Planning to Predict Oropharyngeal Toxicity Reduction for Proton Therapy vs. VMAT.
Int J Radiat Oncol Biol Phys Volume: 111 Page(s): e396 - e397
11/01/2021 Authors: McDonald MW; Stokes WA; Tian S; Dhere VR; Xu KM; Pfister NT; Remick JS; Rudra S; Bates JE; Langen KM
Feasibility and Patient Tolerance of Proton Based Stereotactic Body Radiotherapy.
Volume: 111 Page(s): e473
11/01/2021 Authors: Ali N; Eaton BR; Zhou J; Stokes WA; Patel PR; Langen KM; Slopsema R; Bradley JD; McDonald MW
Feasibility and Patient Tolerance of Proton Based Stereotactic Body Radiotherapy
Volume: 111 Page(s): E473 - E473
11/01/2021 Authors: Ali N; Eaton BR; Zhou J; Stokes WA; Patel PR; Langen KM; Slopsema R; Bradley JD; McDonald MW
Rapid Comparative Planning to Predict Oropharyngeal Toxicity Reduction for Proton Therapy vs. VMAT
Volume: 111 Page(s): E396 - E397
11/01/2021 Authors: McDonald MW; Stokes WA; Tian S; Dhere VR; Xu KM; Pfister NT; Remick JS; Rudra S; Bates JE; Langen KM
Quantitative & Statistical Analyses of Monthly OBI QA on Varian ProBeams
Volume: 48
06/01/2021 Authors: Diamond Z; Stanforth A; Slopsema R; Langen K
Reducing Beam Delivery Time for Proton PBS Treatment with Breath-Hold Motion Management Technique
Volume: 48
06/01/2021 Authors: Zhu M; Stanforth A; Diamond Z; Lin Y; Langen K
Dosimetric Investigation of Inverse-Optimized Proton GRID and Lattice Treatment Plans with a Clinical Pencil Beam Scanning System
Volume: 48
06/01/2021 Authors: Zhu M; Chen H; Snyder J; Regine W; Bradley J; McDonald M; Patel P; Sabouri P; Langen K
Variability in commercially available deformable image registration: A multi-institution analysis using virtual head and neck phantoms.
J Appl Clin Med Phys Volume: 22 Page(s): 89 - 96
05/01/2021 Authors: Kubli A; Pukala J; Shah AP; Kelly P; Langen KM; Bova FJ; Maon RR; Meeks SL
Clinical practice vs. state-of-the-art research and future visions: Report on the 4D treatment planning workshop for particle therapy - Edition 2018 and 2019.
Phys Med Volume: 82 Page(s): 54 - 63
02/01/2021 Authors: Czerska K; Emert F; Kopec R; Langen K; McClelland JR; Meijers A; Miyamoto N; Riboldi M; Shimizu S; Terunuma T
Simultaneous dose and dose rate optimization (SDDRO) for FLASH proton therapy.
Med Phys Volume: 47 Page(s): 6388 - 6395
12/01/2020 Authors: Gao H; Lin B; Lin Y; Fu S; Langen K; Liu T; Bradley J
Plan-Delivery-Time-Constrained Inverse Optimization for High-Throughput PBS Proton RT
Volume: 108 Page(s): E305 - E306
11/01/2020 Authors: Lin Y; McDonald MW; Langen KM; Bradley JD; Liu T; Gao H
Technical Note: Plan-delivery-time constrained inverse optimization method with minimum-MU-per-energy-layer (MMPEL) for efficient pencil beam scanning proton therapy.
Med Phys Volume: 47 Page(s): 3892 - 3897
09/01/2020 Authors: Gao H; Clasie B; McDonald M; Langen KM; Liu T; Lin Y
Characterization of a new scintillation imaging system for proton pencil beam dose rate measurements.
Phys Med Biol Volume: 65 Page(s): 165014
08/21/2020 Authors: Rahman M; Bra P; Langen KM; Gladstone DJ; Cao X; Pogue BW; Zhang R
Plan-Delivery-Time-Constrained PBS Proton Treatment Planning Via Minimum MU Per Energy Layer (MMPEL)
Volume: 47 Page(s): E472 - E472
06/01/2020 Authors: Gao H; Clasie B; McDonald M; Langen K; Liu T; Lin Y
A standardized commissioning framework of Monte Carlo dose calculation algorithms for proton pencil beam scanning treatment planning systems.
Med Phys Volume: 47 Page(s): 1545 - 1557
04/01/2020 Authors: Chang C-W; Huang S; Harms J; Zhou J; Zhang R; Dhabaan A; Slopsema R; Kang M; Liu T; McDonald M
A planning study of focal dose escalations to multiparametric MRI-defined dominant intraprostatic lesions in prostate proton radiation therapy.
Br J Radiol Volume: 93 Page(s): 20190845
03/01/2020 Authors: Wang T; Zhou J; Tian S; Wang Y; Patel P; Jani AB; Langen KM; Curran WJ; Liu T; Yang X
Multiple Computed Tomography Robust Optimization to Account for Random Anatomic Density Variations During Intensity Modulated Proton Therapy.
Adv Radiat Oncol Volume: 5 Page(s): 1022 - 1031
01/01/2020 Authors: Zhu M; Kaiser A; Mishra MV; Kwok Y; Remick J; DeCesaris C; Langen KM
Minimum-MU and sparse-energy-layer (MMSEL) constrained inverse optimization method for efficiently deliverable PBS plans.
Volume: 64 Page(s): 205001
10/10/2019 Authors: Lin Y; Clasie B; Liu T; McDonald M; Langen KM; Gao H
Technical Note: Quality assurance of proton central axis pencil-beam spread-out Bragg peak using large-diameter multilayer ionization chambers.
Med Phys Volume: 46 Page(s): 4685 - 4689
10/01/2019 Authors: Wang P; Zhu M; Langen K
First Clinical Experience of Gated Voluntary Breath-Hold Intensity Modulated Proton Therapy for Thoracic Malignancies
Volume: 105 Page(s): S252 - S252
09/01/2019 Authors: Mohindra P; Mossahebi S; Moreau JM; Buttion M; Molitoris JK; Eblan MJ; Kaiser A; Langen KM; Simone CB
Advances in Pencil Beam Scanning Delivery and Planning Techniques
Volume: 46 Page(s): E532 - E532
06/01/2019 Authors: Langen K; Mossahebi S; Pankuch M; Liu W; Mascia A
Improving IMPT Delivery Efficiency by Increasing Minimum Spot MU in Plan Optimization
Volume: 46 Page(s): E141 - E141
06/01/2019 Authors: Zhu M; Langen K
A Phantom Study of Proton Range Uncertainty From the Measured Exit Dose in Bilateral HN Treatment
Volume: 46 Page(s): E442 - E443
06/01/2019 Authors: Yao W; Zhu M; Chen S; Langen K
Comparison of Dosimetric Evaluations Using Deformed Planning CT and Deep-Learning Corrected CBCT to Quality Assurance CT for Monitoring Anatomy Changes During Proton Therapy
Volume: 46 Page(s): E250 - E250
06/01/2019 Authors: Stanforth A; Langen K; Lin L; Dhabaan A; Lei Y; Liu Y; Wang Y; Sohn J; McDonald M; Eaton B
A Golden Beam Data Commissioning Framework of Monte Carlo Dose Calculation Algorithms of Two Pencil Beam Scanning Proton Therapy Treatment Planning Systems
Volume: 46 Page(s): E167 - E167
06/01/2019 Authors: Chang C; Harms J; Zhang R; Zhou J; Lin Y; Slopsema R; Dhabaan A; Liu T; McDonald M; Langen K
Pseudo Proton Radiography Beam Validation of Monte Carlo Dose Calculation in Two Pencil Beam Scanning Treatment Planning Systems
Volume: 46 Page(s): E592 - E592
06/01/2019 Authors: Chang C; Zhou J; Yang X; Dhabaan A; Zhang R; Liu T; McDonald M; Langen K; Lin L
A Most Likely Path (MLP) Validation of Spot Decomposition for Pencil Beam Scanning (PBS) in Proton Radiography (pRG) and Proton CT (pCT)
Volume: 46 Page(s): E181 - E181
06/01/2019 Authors: Sohn J; Liu T; Li X; Lin L; Ding X; Langen K; Eaton B; McDonald M; Curran W; Yang X
Single- and Multi-CT Robust Optimization Improves Robustness to Anatomic Changes in Head and Neck Cancer Patients Treated with Intensity-Modulated Proton Therapy
Volume: 102 Page(s): E529 - E530
11/01/2018 Authors: Onyeuku N; Snider JW; Regine WF; Simone CB; Langen KM; Diwanji T; Houser T; Le Q; Zhu M
Pencil beam scanning versus passively scattered proton therapy for unresectable pancreatic cancer.
J Gastrointest Oncol Volume: 9 Page(s): 687 - 693
08/01/2018 Authors: Chuong M; Badiyan SN; Yam M; Li Z; Langen K; Regine W; Morris C; Snider J; Mehta M; Huh S
Evaluation of Range Prediction Based On Stopping Power Ratio Images Constructed From Dual-Energy CT
Volume: 45 Page(s): E440 - E440
06/01/2018 Authors: Mossahebi S; Sabouri P; Polf J; Langner U; Langen K
Prediction of Stopping Power Ratio of Proton Beams Using Hydrogen Density of the Media
Volume: 45 Page(s): E432 - E433
06/01/2018 Authors: Mossahebi S; Sabouri P; Langner U; Langen K; Yi B
Initial Evaluation of Dual-Energy CT Based Proton Dose Calculations in Two Commercial Treatment Planning Systems
Volume: 45 Page(s): E430 - E430
06/01/2018 Authors: Mossahebi S; Polf J; Chen H; Mundis M; Langen K
Proton Stopping Power Determination with Dual and Single Energy CT in Lung and Sinus Cavities Using 3D Printed Surrogate Materials
Volume: 45 Page(s): E474 - E474
06/01/2018 Authors: Polf J; Mossahebi S; Mille M; Chen H; Chen-Mayer H; Langen K
Evaluation of the Gain in Using Higher Order Components of the Thoraco-Abdominal Surface to Estimate Volumetric Tidal Flow
Volume: 45 Page(s): E364 - E364
06/01/2018 Authors: Sabouri P; Ranjbar M; Langner U; Sawant A; Langen K; Mossahebi S
A Script for Automated PBS Proton GRID Plan Creation (Patent Pending)
Volume: 45 Page(s): E269 - E269
06/01/2018 Authors: O'Neil M; Zhu M; Eley J; Langen K; Regine W; Snider J
Concepts of PTV and Robustness in Passively Scattered and Pencil Beam Scanning Proton Therapy.
Semin Radiat Oncol Volume: 28 Page(s): 248 - 255
06/01/2018 Authors: Langen K; Zhu M
On the Fuzziness of Machine Learning, Neural Networks, and Artificial Intelligence in Radiation Oncology.
Int J Radiat Oncol Biol Phys Volume: 100 Page(s): 1 - 4
01/01/2018 Authors: El Naqa I; Brock K; Yu Y; Langen K; Klein EE
Efficient Interplay Effect Mitigation for Proton Pencil Beam Scanning by Spot-Adapted Layered Repainting Evenly Spread out Over the Full Breathing Cycle.
Int J Radiat Oncol Biol Phys Volume: 100 Page(s): 226 - 234
01/01/2018 Authors: Poulsen PR; Eley J; Langner U; Simone CB; Langen K
Technique for Assessing Stopping Power Ratio of Implantable Materials and Devices Commonly Used in Pencil Beam Scanning Proton Therapy for Thoracic Malignancies
Volume: 99 Page(s): E708 - E708
10/01/2017 Authors: Onyeuku NE; Chung H; Snider JW; Molitoris JK; Badiyan SN; Carr S; Pickering EM; Sachdeva A; Feigenberg SJ; Langen KM
Robust Treatment Planning of Intensity Modulated Proton Therapy for Pelvic Lymph Node Irradiation in High-Risk Prostate Cancer Patients
Volume: 99 Page(s): E748 - E748
10/01/2017 Authors: Zhu M; Kaiser A; Kwok Y; Mishra MV; Amin PP; Badiyan SN; Vujaskovic Z; Langen KM
A Novel Method for the Delivery of 3-Dimensional High-Dose Spatially Fractionated Radiation Therapy With Pencil Beam Scanning Proton Therapy: Maximizing the Benefit of the Bragg Peak
Volume: 99 Page(s): S232 - S233
10/01/2017 Authors: Snider JW; Diwanji T; Langen KM; Regine WF; Zhu M
Sweeping Arc with Gantry Angle Dependent Modulation of Energy (SAME) for Proton Therapy: A Proof of Principle
Volume: 44 Page(s): 2871 - 2871
06/01/2017 Authors: Langner U; Chung H; D'Souza W; Langen K; Zhu M; Yi B
Comprehensive Morning QA System for Proton Beam Scanning System
Volume: 44
06/01/2017 Authors: Chung H; Langen K
Post-Upgrade Quality Assurance of the Radiation Oncology Information System
Volume: 44 Page(s): 3120 - 3120
06/01/2017 Authors: Chen S; Zhang B; Yi B; Langen K; Nichols E; Langner U; Gopal A; Kalavagunta C; Prado K; D'Souza W
Implementation of a Novel Sweeping Arc with Gantry Angle Dependent Modulation of Energy (SAME) for Proton Therapy Method
Volume: 44 Page(s): 2871 - 2871
06/01/2017 Authors: Langner U; Chung H; Langen K; Zhu M; Yi B
Comparison of multi-institutional Varian ProBeam pencil beam scanning proton beam commissioning data.
J Appl Clin Med Phys Volume: 18 Page(s): 96 - 107
05/01/2017 Authors: Langner UW; Eley JG; Dong L; Langen K
Free Breathing versus Breath-Hold Scanning Beam Proton Therapy and Cardiac Sparing in Breast Cancer.
Int J Part Ther Volume: 3 Page(s): 407 - 413
01/01/2017 Authors: Yu J; Park SS; Herman MG; Langen K; Mehta M; Feigenberg SJ
Robust Lymph Nodes Proton Scanning Irradiation for Locally Advanced Breast Cancer
Volume: 96 Page(s): E682 - E682
10/01/2016 Authors: Yu J; Langen KM; Mehta MP; Nichols EM; Feigenberg SJ
An overview of modern proton therapy.
Chin Clin Oncol Volume: 5 Page(s): 48
08/01/2016 Authors: Chhabra A; Langen K; Mehta MP
Benchmarking of five commercial deformable image registration algorithms for head and neck patients.
J Appl Clin Med Phys Volume: 17 Page(s): 25 - 40
05/08/2016 Authors: Pukala J; Johnson PB; Shah AP; Langen KM; Bova FJ; Staton RJ; Maon RR; Kelly P; Meeks SL
Proton Beam Therapy Basics.
J Am Coll Radiol Volume: 12 Page(s): 1204 - 1206
11/01/2015 Authors: Langen K; Mehta M
Clinical Implementation of TG71-Based Electron MU Calculation and Comparison with a Commercial Secondary Calculation
Volume: 42 Page(s): 3373 - 3373
06/01/2015 Authors: Xu H; Guerrero M; Yang X; Chen S; Langen K; Prado K; Schinkel C
Commissioning of a Commercial 3D Dose Calculation Program
Volume: 42 Page(s): 3376 - 3376
06/01/2015 Authors: Langen K; Guerrero M; Killefer M; Xu H; Zhou J; Zhang B; Chen S
The CBCT Dose Calculation Using a Patient Specific CBCT Number to Mass Density Conversion Curve Based On a Novel Image Registration and Organ Mapping Method in Head-And-Neck Radiation Therapy
Volume: 42 Page(s): 3292 - 3292
06/01/2015 Authors: Zhou J; Lasio G; Yi B; Huang J; Chen S; Zhang B; Langen K; Prado K; D'Souza W
Practical Method to Implement Arc Therapy Using Scanned Particle Beams
Volume: 42 Page(s): 3480 - 3480
06/01/2015 Authors: Eley J; Mehta M; Molitoris J; Langner U; Langen K
Is proton beam therapy better than standard radiation therapy? The available evidence points to benefits of proton beam therapy.
Clin Adv Hematol Oncol Volume: 12 Page(s): 861 - 864
12/01/2014 Authors: Chuong MD; Mehta MP; Langen K; Regine WF
Breath-Hold Intensity Modulated Proton Therapy (BH-IMPT) for Lung SBRT: Feasibility Study
Volume: 90 Page(s): S142 - S142
09/01/2014 Authors: Lin M; Jolinta L; Feigenberg SJ; Mehta MP; DSouza WD; Langen KM
A margin-based analysis of the dosimetric impact of motion on step-and-shoot IMRT lung plans.
Radiat Oncol Volume: 9 Page(s): 46
02/05/2014 Authors: Waghorn BJ; Shah AP; Rineer JM; Langen KM; Meeks SL
A virtual phantom library for the quantification of deformable image registration uncertainties in patients with cancers of the head and neck.
Med Phys Volume: 40 Page(s): 111703
11/01/2013 Authors: Pukala J; Meeks SL; Staton RJ; Bova FJ; Maon RR; Langen KM
Image guided radiation therapy (IGRT) technologies for radiation therapy localization and delivery.
Int J Radiat Oncol Biol Phys Volume: 87 Page(s): 33 - 45
09/01/2013 Authors: De Los Santos J; Popple R; Agazaryan N; Bayouth JE; Bissonnette J-P; Bucci MK; Dieterich S; Dong L; Forster KM; Indelicato D
A comparison of the dosimetric effects of intrafraction motion on step-and-shoot, compensator, and helical tomotherapy-based IMRT.
J Appl Clin Med Phys Volume: 14 Page(s): 4210
05/06/2013 Authors: Waghorn BJ; Staton RJ; Rineer JM; Meeks SL; Langen K
Safety considerations for IGRT: Executive summary.
Pract Radiat Oncol Volume: 3 Page(s): 167 - 170
01/01/2013 Authors: Jaffray DA; Langen KM; Mageras G; Dawson LA; Yan D; EdD RA; Mundt AJ; Fraass B
The dosimetric effect of intrafraction prostate motion on step-and-shoot intensity-modulated radiation therapy plans: magnitude, correlation with motion parameters, and comparison with helical tomotherapy plans.
Int J Radiat Oncol Biol Phys Volume: 84 Page(s): 1220 - 1225
12/01/2012 Authors: Langen KM; Chauhan B; Siebers JV; Moore J; Kupelian PA
Collection of Treatment Plan Parameters and Related Quality Indices Into Radiation Therapy Registries
Volume: 84 Page(s): S157 - S157
11/01/2012 Authors: Ruan D; Shao W; DeMarco J; Tenn S; Langen K; Dieterich S; King C; Mc Closkey S; Low D; Kupelian P
Compliance of Previously Treated Left Breast Cancer Patients With RTOG 1005 Guidelines
Volume: 84 Page(s): S187 - S188
11/01/2012 Authors: Kane E; Langen K; Buchholz D; Dvorak T
Do Adaptive Radiation Therapy (ART) Assessments Depend on the Employed ART Workflow?
Volume: 84 Page(s): S781 - S781
11/01/2012 Authors: Langen KM; Pukala J; Staton R; Manon R
Effect of Re-imaging Frequency in Adaptive Radiation Therapy (ART) for Head and Neck Patients
Volume: 84 Page(s): S780 - S780
11/01/2012 Authors: Langen KM; Pukala J; Staton R; Manon R
An endorectal balloon reduces intrafraction prostate motion during radiotherapy.
Int J Radiat Oncol Biol Phys Volume: 83 Page(s): 661 - 669
06/01/2012 Authors: Smeenk RJ; Louwe RJW; Langen KM; Shah AP; Kupelian PA; van Lin ENJT; Kaanders JHAM
SU-E-J-201: What is the Importance of Dose Recalculation for Adaptive Radiotherapy Dose Assessment?
Volume: 39 Page(s): 3699
06/01/2012 Authors: Pukala J; Staton R; Langen K
Optical and Remote Monitoring IGRT
Page(s): 1 - 12
01/01/2012 Authors: Meeks SL; Willoughby TR; Langen KM; Kupelian PA
The effect of temporal HU variations on the uncertainty of dose recalculations performed on MVCT images.
Phys Med Biol Volume: 56 Page(s): 7829 - 7841
12/21/2011 Authors: Pukala J; Meeks SL; Bova FJ; Langen KM
AN ENDORECTAL BALLOON REDUCES INTRAFRACTION PROSTATE MOTION DURING RADIOTHERAPY
Volume: 99 Page(s): S458 - S459
05/01/2011 Authors: Smeenk RJ; Louwe R; Langen K; Shah A; Kupelian P; van Lin E; Kaanders J
An evaluation of intrafraction motion of the prostate in the prone and supine positions using electromagnetic tracking.
Radiother Oncol Volume: 99 Page(s): 37 - 43
04/01/2011 Authors: Shah AP; Kupelian PA; Willoughby TR; Langen KM; Meeks SL
The Dosimetric Effects of Intrafraction Motion on Step-and-Shoot, Compensator and Helical Tomotherapy based IMRT
Volume: 81 Page(s): S809 - S809
01/01/2011 Authors: Waghorn BJ; Staton RJ; Rineer JM; Meeks SL; Ngwa WF; Langen KM
Analysis of the Dosimetric Effect of Intrafraction Motion on Step-and-shoot IMRT Plans
Volume: 81 Page(s): S847 - S848
01/01/2011 Authors: Waghorn BJ; Chauhan BD; Rineer JM; Meeks SL; Langen KM
Helical tomotherapy: image-guided and adaptive radiotherapy.
Front Radiat Ther Oncol Volume: 43 Page(s): 165 - 180
01/01/2011 Authors: Kupelian P; Langen K
QA for helical tomotherapy: report of the AAPM Task Group 148.
Med Phys Volume: 37 Page(s): 4817 - 4853
09/01/2010 Authors: Langen KM; Papanikolaou N; Balog J; Crilly R; Followill D; Goddu SM; Grant W; Olivera G; Ramsey CR; Shi C
A computational method for estimating the dosimetric effect of intra-fraction motion on step-and-shoot IMRT and compensator plans.
Phys Med Biol Volume: 55 Page(s): 4187 - 4202
07/21/2010 Authors: Waghorn BJ; Shah AP; Ngwa W; Meeks SL; Moore JA; Siebers JV; Langen KM
A comparison of soft-tissue implanted markers and bony anatomy alignments for image-guided treatments of head-and-neck cancers.
Int J Radiat Oncol Biol Phys Volume: 76 Page(s): 767 - 774
03/01/2010 Authors: Zeidan OA; Huddleston AJ; Lee C; Langen KM; Kupelian PA; Meeks SL; Manon RR
The Influence of an Endorectal Balloon on Intrafraction Prostate Motion
Volume: 78 Page(s): S674 - S675
01/01/2010 Authors: Smeenk R; Louwe RJW; Langen KM; Shah AP; Kupelian PA; van Lin ENJT; Kaanders JHAM
Validation of a computational method for assessing the impact of intra-fraction motion on helical tomotherapy plans.
Phys Med Biol Volume: 54 Page(s): 6611 - 6621
11/07/2009 Authors: Ngwa W; Meeks SL; Kupelian PA; Schnarr E; Langen KM
THE DOSIMETRIC CONSEQUENCE OF INTRA-FRACTION PROSTATE MOTION FOR TWO IMRT DELIVERY TECHNIQUES
Volume: 92 Page(s): S87 - S88
08/01/2009 Authors: Langen K; Siebers J; Moore J; Kupelian P
Real-time motion-adaptive-optimization (MAO) in TomoTherapy.
Phys Med Biol Volume: 54 Page(s): 4373 - 4398
07/21/2009 Authors: Lu W; Chen M; Ruchala KJ; Chen Q; Langen KM; Kupelian PA; Olivera GH
Dosimetric effect of prostate motion during helical tomotherapy.
Int J Radiat Oncol Biol Phys Volume: 74 Page(s): 1134 - 1142
07/15/2009 Authors: Langen KM; Lu W; Willoughby TR; Chauhan B; Meeks SL; Kupelian PA; Olivera G
Dosimetric effects of rotational output variation and x-ray target degradation on helical tomotherapy plans.
Med Phys Volume: 36 Page(s): 2881 - 2888
07/01/2009 Authors: Staton RJ; Langen KM; Kupelian PA; Meeks SL
Megavoltage computed tomography image-based low-dose rate intracavitary brachytherapy planning for cervical carcinoma.
Technol Cancer Res Treat Volume: 8 Page(s): 123 - 130
04/01/2009 Authors: Wagner TH; Langen KM; Meeks SL; Willoughby TR; Zeidan OA; Staton RJ; Shah AP; Manon RR; Kupelian PA
Real-time Position Adjustment during Treatment for Localized Prostate Cancers: Observations on Clinical Use and Acute Toxicity
Volume: 75 Page(s): S294 - S294
01/01/2009 Authors: Langen KM; Shah AP; Willoughby TR; Meeks SL; Kupelian PA
Image-guided Stereotactic Radiotherapy for Peripheral Lung Tumors: Gating vs. Motion Encompassing Approaches
Volume: 75 Page(s): S458 - S458
01/01/2009 Authors: Staton RJ; Meeks S; Willoughby T; Langen K; Shah A; Zeidan O; Kupelian P
Evaluating Intrafraction Motion of the Prostate in the Prone and Supine Positions using Electromagnetic Tracking
Volume: 75 Page(s): S597 - S597
01/01/2009 Authors: Shah AP; Meeks SL; Willoughby TR; Langen KM; Kupelian PA
Correlation between dosimetric effect and intrafraction motion during prostate treatments delivered with helical tomotherapy.
Phys Med Biol Volume: 53 Page(s): 7073 - 7086
12/21/2008 Authors: Langen KM; Lu W; Ngwa W; Willoughby TR; Chauhan B; Meeks SL; Kupelian PA; Olivera G
Evaluation of geometric changes of parotid glands during head and neck cancer radiotherapy using daily MVCT and automatic deformable registration.
Radiother Oncol Volume: 89 Page(s): 81 - 88
10/01/2008 Authors: Lee C; Langen KM; Lu W; Haimerl J; Schnarr E; Ruchala KJ; Olivera GH; Meeks SL; Kupelian PA; Shellenberger TD
Performance evaluation of an improved optical computed tomography polymer gel dosimeter system for 3D dose verification of static and dynamic phantom deliveries.
Med Phys Volume: 35 Page(s): 3847 - 3859
09/01/2008 Authors: Lopatiuk-Tirpak O; Langen KM; Meeks SL; Kupelian PA; Zeidan OA; Maryanski MJ
A METHOD TO ESTIMATE MEAN TUMOR POSITION, TUMOR MOTION AND THE TUMOR TRAJECTORY FROM CONE-BEAM CT PROJECTIONS FOR PROSTATE IGRT APPLICATIONS
Volume: 88 Page(s): S158 - S159
09/01/2008 Authors: Poulsen PR; Cho B; Langen K; Kupelian P; Keall P
Three-dimensional prostate position estimation with a single x-ray imager utilizing the spatial probability density.
Phys Med Biol Volume: 53 Page(s): 4331 - 4353
08/21/2008 Authors: Poulsen PR; Cho B; Langen K; Kupelian P; Keall PJ
Assessment of parotid gland dose changes during head and neck cancer radiotherapy using daily megavoltage computed tomography and deformable image registration.
Int J Radiat Oncol Biol Phys Volume: 71 Page(s): 1563 - 1571
08/01/2008 Authors: Lee C; Langen KM; Lu W; Haimerl J; Schnarr E; Ruchala KJ; Olivera GH; Meeks SL; Kupelian PA; Shellenberger TD
Observations on real-time prostate gland motion using electromagnetic tracking.
Int J Radiat Oncol Biol Phys Volume: 71 Page(s): 1084 - 1090
07/15/2008 Authors: Langen KM; Willoughby TR; Meeks SL; Santhanam A; Cunningham A; Levine L; Kupelian PA
Can megavoltage computed tomography reduce proton range uncertainties in treatment plans for patients with large metal implants?
Phys Med Biol Volume: 53 Page(s): 2327 - 2344
05/07/2008 Authors: Newhauser WD; Giebeler A; Langen KM; Mirkovic D; Mohan R
Patient dose from megavoltage computed tomography imaging.
Int J Radiat Oncol Biol Phys Volume: 70 Page(s): 1579 - 1587
04/01/2008 Authors: Shah AP; Langen KM; Ruchala KJ; Cox A; Kupelian PA; Meeks SL
Investigation of accelerated partial breast patient alignment and treatment with helical tomotherapy unit.
Int J Radiat Oncol Biol Phys Volume: 70 Page(s): 1272 - 1280
03/15/2008 Authors: Langen KM; Buchholz DJ; Burch DR; Burkavage R; Limaye AU; Meeks SL; Kupelian PA; Ruchala KJ; Haimerl J; Henderson D
Evaluation of image-guidance strategies in the treatment of localized prostate cancer.
Int J Radiat Oncol Biol Phys Volume: 70 Page(s): 1151 - 1157
03/15/2008 Authors: Kupelian PA; Lee C; Langen KM; Zeidan OA; Maon RR; Willoughby TR; Meeks SL
Image-guided radiotherapy for localized prostate cancer: treating a moving target.
Semin Radiat Oncol Volume: 18 Page(s): 58 - 66
01/01/2008 Authors: Kupelian PA; Langen KM; Willoughby TR; Zeidan OA; Meeks SL
Quality assurance of onboard megavoltage computed tomography imaging and target localization systems for on- and off-line image-guided radiotherapy.
Int J Radiat Oncol Biol Phys Volume: 71 Page(s): S62 - S65
01/01/2008 Authors: Langen KM; Meeks SL; Pouliot J
Helical tomotherapy MVCT image quality comparison
Volume: 84 Page(s): S93 - S93
10/01/2007 Authors: Vidakovic S; Field C; Monajemi T; MacPherson M; Lightstone A; Crilly R; Langen K
Tomotherapy solutions for IGRT and correction strategies
Volume: 84 Page(s): S56 - S57
09/01/2007 Authors: Langen K
Evaluation of image-guidance protocols in the treatment of head and neck cancers.
Int J Radiat Oncol Biol Phys Volume: 67 Page(s): 670 - 677
03/01/2007 Authors: Zeidan OA; Langen KM; Meeks SL; Manon RR; Wagner TH; Willoughby TR; Jenkins DW; Kupelian PA
A model for predicting lung cancer response to therapy.
Int J Radiat Oncol Biol Phys Volume: 67 Page(s): 601 - 609
02/01/2007 Authors: Seibert RM; Ramsey CR; Hines JW; Kupelian PA; Langen KM; Meeks SL; Scaperoth DD
IMRT planning for head and neck cancers: Sparing of the larynx in helical tomotherapy treatment plans
Volume: 69 Page(s): S455 - S455
01/01/2007 Authors: Staton RJ; Meeks SL; Chauhan B; Langen KM; Kupelian PA; Manon RR
Does image guidance need to be performed daily in the treatment of localized prostate cancers? Implications on treatment margins
Volume: 69 Page(s): S82 - S83
01/01/2007 Authors: Meeks S; Kupelian PA; Lee C; Willoughby T; Zeidan O; Langen K
Predictive adaptive radiation therapy for lung cancer
Volume: 69 Page(s): S24 - S24
01/01/2007 Authors: Ramsey CR; Seibert R; Hines W; Meeks S; Langen K; Kupelian P; Li X
Determination of neutron energy spectra inside a water phantom irradiated by 64 MeV neutrons.
Radiat Prot Dosimetry Volume: 126 Page(s): 346 - 349
01/01/2007 Authors: Herbert MS; Brooks FD; Allie MS; Buffler A; Nchodu MR; Makupula SA; Jones DTL; Langen KM
Do anatomic changes during radiation impact normal tissue and target dosimetry? An analysis of calculated cumulative dose in head and neck patients
Volume: 69 Page(s): S429 - S430
01/01/2007 Authors: Manon R; Lee C; Langen K; Meeks S; Kupelian P; Haimerl J; Shellenberger T; Olivera G
Mechanical and dosimetric quality assurance for helical tomotherapy
Volume: 69 Page(s): S699 - S699
01/01/2007 Authors: Ramsey CR; Gibbons J; Holmes T; Jeong K; Langen K; Low D; Meeks S; Papanikolaou N; Schubert K; Tomsej M
Intra-fraction prostate motion: Dosimetric impact on delivered doses
Volume: 69 Page(s): S336 - S337
01/01/2007 Authors: Langen KM; Kupelian P; Willoughby T; Meeks S; Lu W; Olivera G
Impact of real-time prostate motion on the accuracy of static image guidance techniques
Volume: 69 Page(s): S349 - S349
01/01/2007 Authors: Kupelian PA; Langen KM; Santhanam A; Willoughby TR; Zeidan OA; Solberg TD; Meeks SL
A dosimetric evaluation of markers vs. bony anatomy alignments for a head and neck case
Volume: 69 Page(s): S460 - S460
01/01/2007 Authors: Zeidan OA; Lee C; Langen K; Kupelian P; Manon R; Meeks S
Positional and volumetric changes in parotid glands during head and neck radiation therapy assessed using deformable image registration
Volume: 69 Page(s): S203 - S204
01/01/2007 Authors: Lee C; Langen KM; Kupelian PA; Meeks SL; Manon RR; Lu W; Haimerl J; Olivera GH
Patient-specific dose from megavoltage CT Imaging with a helical tomotherapy unit
Volume: 69 Page(s): S193 - S194
01/01/2007 Authors: Shah AP; Langen KM; Ruchala K; Cox A; Kupelian PA; Meeks SL
Characterization and use of EBT radiochromic film for IMRT dose verification.
Med Phys Volume: 33 Page(s): 4064 - 4072
11/01/2006 Authors: Zeidan OA; Stephenson SAL; Meeks SL; Wagner TH; Willoughby TR; Kupelian PA; Langen KM
Daily variations in delivered doses in patients treated with radiotherapy for localized prostate cancer.
Int J Radiat Oncol Biol Phys Volume: 66 Page(s): 876 - 882
11/01/2006 Authors: Kupelian PA; Langen KM; Zeidan OA; Meeks SL; Willoughby TR; Wagner TH; Jeswani S; Ruchala KJ; Haimerl J; Olivera GH
Daily variations in the position of the prostate bed in patients with prostate cancer receiving postoperative external beam radiation therapy.
Int J Radiat Oncol Biol Phys Volume: 66 Page(s): 593 - 596
10/01/2006 Authors: Kupelian PA; Langen KM; Willoughby TR; Wagner TH; Zeidan OA; Meeks SL
Evaluation of an infrared camera and X-ray system using implanted fiducials in patients with lung tumors for gated radiation therapy.
Int J Radiat Oncol Biol Phys Volume: 66 Page(s): 568 - 575
10/01/2006 Authors: Willoughby TR; Forbes AR; Buchholz D; Langen KM; Wagner TH; Zeidan OA; Kupelian PA; Meeks SL
Deformable registration of the planning image (kVCT) and the daily images (MVCT) for adaptive radiation therapy.
Volume: 51 Page(s): 4357 - 4374
09/07/2006 Authors: Lu W; Olivera GH; Chen Q; Ruchala KJ; Haimerl J; Meeks SL; Langen KM; Kupelian PA
Patient positioning for IGRT of the prostate: Challenges and techniques
Volume: 182 Page(s): 138 - 138
05/01/2006 Authors: Langen K
Evaluation of two tomotherapy-based techniques for the delivery of whole-breast intensity-modulated radiation therapy.
Int J Radiat Oncol Biol Phys Volume: 65 Page(s): 284 - 290
05/01/2006 Authors: Gonzalez VJ; Buchholz DJ; Langen KM; Olivera GH; Chauhan B; Meeks SL; Ruchala KJ; Haimerl J; Lu W; Kupelian PA
A technique for adaptive image-guided helical tomotherapy for lung cancer.
Int J Radiat Oncol Biol Phys Volume: 64 Page(s): 1237 - 1244
03/15/2006 Authors: Ramsey CR; Langen KM; Kupelian PA; Scaperoth DD; Meeks SL; Mahan SL; Seibert RM
Serial megavoltage CT imaging during external beam radiotherapy for non-small-cell lung cancer: in regard to Kupelian et al. (Int J Radiat Oncol Biol Phys 2005;630:1024-1028).
Int J Radiat Oncol Biol Phys Volume: 64 Page(s): 328
01/01/2006 Authors: Dar AR; Yartsev S; Rodrigues G; Bauman G
Feasibility of image-guided helical tomotherapy for frame-based stereotactic radiosurgery
Volume: 66 Page(s): S630 - S631
01/01/2006 Authors: Wagner TH; Meeks SL; Langen KM; Willoughby TR; Kupelian PA; Zeidan OA; Shah AP; Manon RR; Ruchala K; Olivera G
Use of daily CT-based deformable registration to track lung daily tumor volumes and position
Volume: 66 Page(s): S654 - S655
01/01/2006 Authors: Chen Q; Olivera GH; Lu W; Ruchala KJ; Langen KM; Meeks SL; Kupelian PA
Serial megavoltage CT imaging during external beam radiotherapy for non-small-cell lung cancer: In regard to Kupelian et al. (Int J Radiat Oncol Biol Phys 2005;63 : 1024-1028) - In response to Dr. Dar et al.
INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS Volume: 64 Page(s): 328 - 329
01/01/2006 Authors: Kupelian PA; Ramsey C; Meeks SL; Willoughby TR; Forbes A; Wagner TH; Langen KM
Stability of implanted fiducials for x-ray localization of lung tumors during radiation therapy
Volume: 66 Page(s): S476 - S476
01/01/2006 Authors: Forbes A; Meeks SL; Willoughby TR; Wagner TH; Johnston AD; Herran JJ; Langen KM; Kupelian PA
Clinical application of deformable image registration in head and neck cancer radiotherapy: Does planned dose to tumor and normal structures change during treatment?
Volume: 66 Page(s): S416 - S416
01/01/2006 Authors: Manon R; Langen K; Meeks S; Limaye A; Kupelian P; Olivera G; Lu W; Ruchala K
Daily variations in delivered doses in patients treated with radiotherapy for localized prostate cancer
Volume: 66 Page(s): S341 - S341
01/01/2006 Authors: Langen KM; Kupelian PA; Zeidan OA; Meeks SL; Jeswani S; Ruchala KJ; Haimerl J; Olivera GH
Comparison of megavoltage CT image-based volumetric dose calculations with ICRU reference point estimates of bladder and rectal doses during low doserate intracavitary brachytherapy for cervical cancer
Volume: 66 Page(s): S161 - S161
01/01/2006 Authors: Staton RJ; Langen KM; Kupelian PA; Manon RR; Zeidan OA; Willoughby TR; Shah AP; Buchholz D; Meeks SL; Wagner TH
Deformable image registration and replanning in head and neck radiotherapy for optimization of parotid sparing
Volume: 66 Page(s): S99 - S100
01/01/2006 Authors: Meeks SL; Manon RR; Kupelian PA; Lu W; Chen Q; Langen KM; Ruchala KJ; Haimerl J; Olivera GH
Evaluation of image-guidance strategies in the treatment of head and neck cancers
Volume: 66 Page(s): S141 - S142
01/01/2006 Authors: Zeidan OA; Langen K; Meeks S; Manon R; Wagner T; Willoughby T; Jenkins D; Kupelian P
Serial megavoltage CT imaging during external beam radiotherapy for non-small-cell lung cancer: observations on tumor regression during treatment.
Int J Radiat Oncol Biol Phys Volume: 63 Page(s): 1024 - 1028
11/15/2005 Authors: Kupelian PA; Ramsey C; Meeks SL; Willoughby TR; Forbes A; Wagner TH; Langen KM
Evaluation of a diode array for QA measurements on a helical tomotherapy unit.
Med Phys Volume: 32 Page(s): 3424 - 3430
11/01/2005 Authors: Langen KM; Meeks SL; Poole DO; Wagner TH; Willoughby TR; Zeidan OA; Kupelian PA; Ruchala KJ; Olivera GH
The use of megavoltage CT (MVCT) images for dose recomputations.
Phys Med Biol Volume: 50 Page(s): 4259 - 4276
09/21/2005 Authors: Langen KM; Meeks SL; Poole DO; Wagner TH; Willoughby TR; Kupelian PA; Ruchala KJ; Haimerl J; Olivera GH
Loose pitch and static delivery capabilities for helical tomotherapy
Volume: 76 Page(s): S189 - S189
09/01/2005 Authors: Olivera G; Ruchala K; Lu W; Mackie R; Langen K; Meeks S; Kupelian P
Intraprostatic fiducials for localization of the prostate gland: monitoring intermarker distances during radiation therapy to test for marker stability.
Int J Radiat Oncol Biol Phys Volume: 62 Page(s): 1291 - 1296
08/01/2005 Authors: Kupelian PA; Willoughby TR; Meeks SL; Forbes A; Wagner T; Maach M; Langen KM
Initial experience with megavoltage (MV) CT guidance for daily prostate alignments.
Int J Radiat Oncol Biol Phys Volume: 62 Page(s): 1517 - 1524
08/01/2005 Authors: Langen KM; Zhang Y; Andrews RD; Hurley ME; Meeks SL; Poole DO; Willoughby TR; Kupelian PA
Performance characterization of megavoltage computed tomography imaging on a helical tomotherapy unit.
Med Phys Volume: 32 Page(s): 2673 - 2681
08/01/2005 Authors: Meeks SL; Harmon JF; Langen KM; Willoughby TR; Wagner TH; Kupelian PA
Daily megavoltage CT imaging in patients with prostate cancer receiving postoperative radiation therapy: Does the prostate bed move?
Volume: 63 Page(s): S308 - S309
01/01/2005 Authors: Burkavage R; Langen K; Wagner T; Willoughby T; Zeidan O; Olivera G; Ruchala K; Hameirl J; Meeks S; Kupelian P
Daily dose recalculation using megavoltage CT images during tomotherapy for localized prostate cancer: Dosimetric analysis for the prostate gland, rectum and bladder for the full treatment course
Volume: 63 Page(s): S309 - S309
01/01/2005 Authors: Zeidan O; Langen K; Meeks S; Olivera G; Ruchala K; Hameirl J; Wagner T; Willoughby T; Kupelian P
Serial megavoltage CT imaging for non-small cell lung cancer: Observations on tumor regression during treatment
Volume: 63 Page(s): S404 - S404
01/01/2005 Authors: Forbes A; Ramsey C; Langen K; Meeks S; Willoughby T; Wagner T; Kupelian P
Image guided radiotherapy plan evaluation based on deformable dose registration from daily on-line positioning images
Volume: 63 Page(s): S508 - S509
01/01/2005 Authors: Olivera G; Lu W; Ruchala K; Chen Q; Langen K; Meeks S; Kupelian P
Evaluation of breast tumor bed alignment techniques for image guided radiotherapy
Volume: 63 Page(s): S179 - S179
01/01/2005 Authors: Langen K; Buchholz D; Victor G; Meeks S; Wagner T; Willoughby T; Olivera G; Ruchala K; Haimerl J; Kupelian P
Use of daily megavoltage CT imaging to determine delivered dose variations in head and neck cancer patients
Volume: 63 Page(s): S361 - S362
01/01/2005 Authors: Jenkins W; Langen K; Meeks S; Olivera G; Ruchala K; Haimerl J; Wagner T; Willoughby T; Kupelian P
Intraprostatic fiducials for localization of the prostate gland: Monitoring intermarker distances during radiation therapy to test for marker stability
Volume: 63 Page(s): S302 - S302
01/01/2005 Authors: Kupelian P; Willoughby T; Meeks S; Forbes A; Wagner T; Maach M; Langen K
Megavoltage CT image-based intracavitary low dose rate brachytherapy for cervical carcinoma
Volume: 63 Page(s): S338 - S339
01/01/2005 Authors: Wagner TH; Buchholz D; Forbes A; Willoughby TR; Meeks SL; Kupelian PA; Zeidan OA; Langen KM
Prostate movement during simulation resulting from retrograde urethrogram compared with "natural" prostate movement.
Int J Radiat Oncol Biol Phys Volume: 60 Page(s): 470 - 475
10/01/2004 Authors: Liu Y-M; Ling S; Langen KM; Shinohara K; Weinberg V; Pouliot J; Roach M
Image guided therapy for prostate cancer patients treated with a TomoTherapy unit
Volume: 31 Page(s): 1890 - 1890
06/01/2004 Authors: Langen K; Zhang Y; Poole D; McNerney G; Willoughby T; Kupelian P
Dosimetric evaluation of TomoTherapy plans
Volume: 31 Page(s): 1732 - 1732
06/01/2004 Authors: Zhang Y; Kupelian P; Langen K; McNerney G; Poole D; Willoughby T
Changes in prostate position over time periods typical of IMRT treatment times
Volume: 31 Page(s): 1867 - 1867
06/01/2004 Authors: Langen K; Zhang Y; Poole D; McNerney G; Willoughby T; Kupelian P
An independent dose validation technique for TomoTherapy Hi*Art II Tomo IMRT treatments
Volume: 31 Page(s): 1862 - 1862
06/01/2004 Authors: Poole D; Kupelian P; Langen K; McNerney G; Willoughby T; Zhang Y
Clinical data preparatory to treating on a TomoTherapy, Inc. Hi*Art II accelerator
Volume: 31 Page(s): 1830 - 1830
06/01/2004 Authors: Poole D; Kupelian P; Langen K; McNerney G; Willoughby T; Zhang Y
Daily megavoltage CT image guidance in the treatment of localized prostate cancer
Volume: 60 Page(s): S616 - S617
01/01/2004 Authors: Zhang Y; Langen K; Poole D; Willoughby T; McNerney G; Meeks S; Kupelian P
Using daily MVCT images to calculate daily rectal dose volume histograms in prostate cancer patients treated with a helical TomoTherapy unit
Volume: 60 Page(s): S613 - S613
01/01/2004 Authors: Langen K; Poole D; Zhang Y; Willoughby T; McNerny G; Meeks S; Haimerl J; Ruchala K; Olivera G; Kupelian P
Evaluation of ultrasound-based prostate localization for image-guided radiotherapy.
Int J Radiat Oncol Biol Phys Volume: 57 Page(s): 635 - 644
11/01/2003 Authors: Langen KM; Pouliot J; Anezinos C; Aubin M; Gottschalk AR; Hsu I-C; Lowther D; Liu Y-M; Shinohara K; Verhey LJ
(Non)-migration of radiopaque markers used for on-line localization of the prostate with an electronic portal imaging device.
Int J Radiat Oncol Biol Phys Volume: 56 Page(s): 862 - 866
07/01/2003 Authors: Pouliot J; Aubin M; Langen KM; Liu Y-M; Pickett B; Shinohara K; Roach M
Electron beam verification with an A-Si EPID
Volume: 30 Page(s): 1475 - 1475
06/01/2003 Authors: Aubin M; Langen K; Faddegon B; Pouliot J
Dose-guided radiation therapy using low-dose megavoltage Cone-Beam CT
Volume: 30 Page(s): 1337 - 1338
06/01/2003 Authors: Pouliot J; Xia P; Aubin M; Verhey L; Langen K; Bani-Hashemi A; Svatos M; Ghelmansarai F; Mitchke M
Measurement of the tissue to A-150 tissue equivalent plastic kerma ratio at two p(66)Be neutron therapy facilities.
Phys Med Biol Volume: 48 Page(s): 1345 - 1359
05/21/2003 Authors: Langen KM; Binnss PJ; Schreuder AN; Lennox AJ; Deluca PM
Organ motion and its management.
Int J Radiat Oncol Biol Phys Volume: 50 Page(s): 265 - 278
05/01/2001 Authors: Langen KM; Jones DT
Proton pencil beam scanning treatment with feedback based voluntary moderate breath hold.
Med Dosim Volume: 45 Page(s): e10 - e15
Authors: Wang P; Tang S; Leach K; Mangona V; Simone CB; Langen K; Chang C

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