Research Topics
| John A AntolakSummaryAffiliation: The University of Texas Country: USA Publications
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Detail Information
Publications
Using Monte Carlo methods to commission electron beams: a feasibility studyJohn A Antolak
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston 77030 4009, USA
Med Phys 29:771-86. 2002..Although we believe that this hypothesis can be proved, it remains a challenge for the medical physics community. We intend to pursue this further by developing systematic methods for isolating causes of these differences...
A novel platform simulating irregular motion to enhance assessment of respiration-correlated radiation therapy proceduresMathew J Fitzpatrick
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, Texas 77030, USA
J Appl Clin Med Phys 6:13-21. 2005..This study showed that a platform capable of programmable irregular motion is a useful tool for the development and assessment of procedures related to the effects of respiratory motion in radiation therapy...
Multiple scattering theory for total skin electron beam designJ A Antolak
University of Texas M D Anderson Cancer Center, Houston 77030, USA
Med Phys 25:851-9. 1998..Suboptimal configurations can be quickly dismissed, and the predicted optimal solution should be very close to satisfying the clinical specifications...
Fetal dose estimates for electron-beam treatment to the chest wall of a pregnant patientJ A Antolak
Department of Radiation Physics, University of Texas M D Anderson Cancer Center, Houston 77030, USA
Med Phys 25:2388-91. 1998..These results show that it is possible to reduce fetal dose to acceptable limits in electron-beam radiotherapy of the chest wall using the general principles recommended for photon-beam radiotherapy...
Application of the electron pencil beam redefinition algorithm to electron arc therapyPai Chun M Chi
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
Med Phys 33:2369-83. 2006....
Modeling skin collimation using the electron pencil beam redefinition algorithmPai Chun M Chi
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
Med Phys 32:3409-18. 2005..To further improve the accuracy of the PBRA in regions having significant electrons scattered from the edge of the skin collimation would require transporting the electrons through the lead skin collimation near its edges...
Calculating percent depth dose with the electron pencil-beam redefinition algorithmMichael J Price
Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77070, USA
J Appl Clin Med Phys 8:61-75. 2007....
The use of an extra-focal electron source to model collimator-scattered electrons using the pencil-beam redefinition algorithmRobert A Boyd
Department of Radiation Physics, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA
Med Phys 29:2571-83. 2002..Time of PBRA dose calculation was approximately doubled; however, dual-source beam modeling of newer accelerators (e.g., the Varian Clinac 2100) may not be necessary because of less impact of collimator-scattered electrons on dosimetry...
Dosimetry of a prototype retractable eMLC for fixed-beam electron therapyKenneth R Hogstrom
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, Texas 77030, USA
Med Phys 31:443-62. 2004..The eMLC should allow the same treatments as are typically delivered with the electron applicator-cutout system currently used for fixed-beam therapy...
Displacement-based binning of time-dependent computed tomography image data setsMathew J Fitzpatrick
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, Texas, 77030 4009, USA
Med Phys 33:235-46. 2006..Although the technique is currently limited by the phase intervals allowed by the CT software, some improvement in image reconstruction was seen, indicating that this technique is useful at least as an interim measure...
Influence of source parameters on large-field electron beam profiles calculated using Monte Carlo methodsRebecca Weinberg
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, TX, USA
Phys Med Biol 54:105-16. 2009....
Evaluation of the accuracy of fetal dose estimates using TG-36 dataStephen F Kry
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, Texas 77030, USA
Med Phys 34:1193-7. 2007..On average, TG-36 calculations underestimated the measured dose by 31%. No significant trends in the relationship between the calculated and measured fetal doses were found based on the distance from, or the size of, the treatment field...
PTV margin determination in conformal SRT of intracranial lesionsBrent C Parker
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
J Appl Clin Med Phys 3:176-89. 2002....
Electron conformal radiotherapy using bolus and intensity modulationRajat J Kudchadker
Department of Radiation Physics, M D Anderson Cancer Center, University of Texas, Houston, TX 77030, USA
Int J Radiat Oncol Biol Phys 53:1023-37. 2002..The present work evaluates the ability to restore dose homogeneity by varying the incident electron intensity...
Respiration-correlated treatment delivery using feedback-guided breath hold: a technical studyChristopher Nelson
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center Houston, Texas 77030, USA
Med Phys 32:175-81. 2005..A quality control analysis of the gating delay box and the integrated system was performed to ensure that all of the hardware and components were ready for clinical use...
Prostate biopsy status and PSA nadir level as early surrogates for treatment failure: analysis of a prostate cancer randomized radiation dose escalation trialAlan Pollack
Department of Radiation Oncology, University of Texas M D Anderson Cancer Center, Houston, TX, USA
Int J Radiat Oncol Biol Phys 54:677-85. 2002..These issues were investigated in a cohort of men with Stage T1-T3 prostate cancer who were randomized to receive between 70 Gy and 78 Gy and were prospectively biopsied at about 2 years after the completion of radiotherapy (RT)...
