Research Topics
| Michael T GillinSummaryAffiliation: The University of Texas Country: USA Publications
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Detail Information
Publications
An overview of the comprehensive proton therapy machine quality assurance procedures implemented at The University of Texas M. D. Anderson Cancer Center Proton Therapy Center-HoustonBijan Arjomandy
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1840 Old Spanish Trail, Houston, Texas 77025, USA
Med Phys 36:2269-82. 2009..This article describes these procedures and can be used by others as a guideline for developing QA procedures based on particle accelerator specific parameters and local regulations pertinent to any new facility...- Quality assurance methods for the first Radiation Therapy Oncology Group permanent prostate implant protocolMichael T Gillin
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, TX 77030 4009, USA
Brachytherapy 5:152-6. 2006.... - Commissioning of the discrete spot scanning proton beam delivery system at the University of Texas M.D. Anderson Cancer Center, Proton Therapy Center, HoustonMichael T Gillin
Department of Radiation Physics, U T MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
Med Phys 37:154-63. 2010..To describe a summary of the clinical commissioning of the discrete spot scanning proton beam at the Proton Therapy Center, Houston (PTC-H)... - Exploration of the potential of liquid scintillators for real-time 3D dosimetry of intensity modulated proton beamsSam Beddar
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 94, Houston, Texas 77030, USA
Med Phys 36:1736-43. 2009..The authors showed that this effect can be accounted for and corrected by Monte Carlo simulations. The liquid scintillator detector system has a good potential for performing fast proton beam verification and characterization... - Monte Carlo investigation of the low-dose envelope from scanned proton pencil beamsGabriel O Sawakuchi
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
Phys Med Biol 55:711-21. 2010.... - Monte Carlo study of photon fields from a flattening filter-free clinical acceleratorOleg N Vassiliev
The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
Med Phys 33:820-7. 2006..31 (6 MV) and 5.45 (18 MV) at a given target current. Because the flattening filter is a major source of head scatter photons, its removal from the beam line could reduce the out-of-field dose... - Experimental characterization of the low-dose envelope of spot scanning proton beamsGabriel O Sawakuchi
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
Phys Med Biol 55:3467-78. 2010..We determined that the low-dose envelope can be influential even for fields as large as 20 cm x 20 cm... - Monte Carlo model for a prototype CT-compatible, anatomically adaptive, shielded intracavitary brachytherapy applicator for the treatment of cervical cancerMichael J Price
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1220 Holcombe Boulevard, Houston, Texas 77030, USA
Med Phys 36:4147-55. 2009.... - Measurement of neutron dose equivalent and its dependence on beam configuration for a passive scattering proton delivery systemXin Wang
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
Int J Radiat Oncol Biol Phys 76:1563-70. 2010.... - Patient-specific quality assurance for prostate cancer patients receiving spot scanning proton therapy using single-field uniform doseX Ronald Zhu
Department of Radiation Physics, University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
Int J Radiat Oncol Biol Phys 81:552-9. 2011..To describe our experiences with patient-specific quality assurance (QA) for patients with prostate cancer receiving spot scanning proton therapy (SSPT) using single-field uniform dose (SFUD)... - LiF TLD-100 as a dosimeter in high energy proton beam therapy--can it yield accurate results?John R Zullo
The University of Texas M D Anderson Cancer Center, Houston, TX, USA
Med Dosim 35:63-6. 2010..Thus, the rapid change in stopping power ratios at the end of the range should not affect such measurements, and TLD-100 may be used with confidence as an in vivo dosimeter for proton beam therapy... - Patient dosimetry for total body irradiation using single-use MOSFET detectorsTina Marie Briere
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, Texas, USA
J Appl Clin Med Phys 9:2787. 2008.... - Liquid scintillator for 2D dosimetry for high-energy photon beamsFalk Pönisch
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Unit 94, Houston, Texas 77030, USA
Med Phys 36:1478-85. 2009..This new detector system shows a potential usefulness of the LS for 2D QA... - A procedure for calculation of monitor units for passively scattered proton radiotherapy beamsNarayan Sahoo
Department of Radiation Physics, UT MD Anderson Cancer Center, 1515 Holcombe Boulevard, Box 1150, Houston, Texas 77030, USA
Med Phys 35:5088-97. 2008..The authors conclude that an intuitive formula similar to the one used for monitor unit calculation of therapeutic photon beams can be used to compute the monitor units of passively scattered proton therapy beams... - Respiratory gating with EPID-based verification: the MDACC experienceTina Marie Briere
Department of Radiation Physics, MD Anderson Cancer Center, Houston, TX 77030, USA
Phys Med Biol 54:3379-91. 2009..Daily assessment of images acquired during treatment verifies the accuracy of the delivered treatment and uncovers problems in patient set-up... - Toward a better understanding of the gamma index: Investigation of parameters with a surface-based distance methodHeng Li
Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA
Med Phys 38:6730-41. 2011.... - A procedure to determine the planar integral spot dose values of proton pencil beam spotsAman Anand
Department of Radiation Physics, University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA
Med Phys 39:891-900. 2012..This paper reports the results of our study of a novel method to determine PISD values from the measured lateral dose profiles and peak dose of the PPBS... - A CT-based software tool for evaluating compensator quality in passively scattered proton therapyHeng Li
Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
Phys Med Biol 55:6759-71. 2010..001, which suggests that the mean depth gradient is a good indicator of compensator complexity. These results demonstrate that the CT-based compensator QA tool can be used to quantitatively evaluate manufactured compensators... - Computation of doses for large-angle Coulomb scattering of proton pencil beamsGeorge Ciangaru
Department of Radiation Physics, Proton Therapy Center, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
Phys Med Biol 54:7285-300. 2009..The analysis presented in this work did not require user-adjustable parameters and may be carried out in a similar way for any other media, depths and proton energies... - Implantable MOSFET detectors: evaluation of a new designTina Marie Briere
Department of Radiation Physics, Division of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, Texas 77030, USA
Med Phys 34:4585-90. 2007..2% of the mean. When used as specified by the manufacturer, these detectors should provide data useful to verify the delivered dose for external beam radiation therapy within a certain tolerance... - Material efficiency studies for a Compton camera designed to measure characteristic prompt gamma rays emitted during proton beam radiotherapyDaniel Robertson
Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Unit 94, Houston, TX 77030, USA
Phys Med Biol 56:3047-59. 2011..The most efficient multi-material camera design consisted of two initial stages of germanium (3 cm) and a final stage of BGO, resulting in a theoretical efficiency of 1.26 × 10(-4) per incident proton... - Single-use MOSFET radiation dosimeters for the quality assurance of megavoltage photon beamsTina Marie Briere
Department of Radiation Physics, Division of Radiation Oncology, The University of Texas M D Anderson Cancer Center, Houston, TX, USA
Phys Med Biol 51:1139-44. 2006..The MOSFET detectors provide a quick check of machine output, which can be efficacious in detecting gross errors in machine calibrations... - Preclinical biologic assessment of proton beam relative biologic effectiveness at Proton Therapy Center HoustonKathryn A Mason
Department of Experimental Radiation Oncology, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
Int J Radiat Oncol Biol Phys 68:968-70. 2007..Our data are consistent with a generic relative biologic effectiveness of 1.1, and this relative biologic effectiveness is in agreement with that used to describe most other clinical proton therapy beams worldwide... - Quantitative analysis of beam delivery parameters and treatment process time for proton beam therapyKazumichi Suzuki
Department of Radiation Physics, The University of Texas, MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
Med Phys 38:4329-37. 2011..To evaluate patient census, equipment clinical availability, maximum daily treatment capacity, use factor for major beam delivery parameters, and treatment process time for actual treatments delivered by proton therapy systems... - Dosimetric properties of photon beams from a flattening filter free clinical acceleratorOleg N Vassiliev
The University of Texas M D Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
Phys Med Biol 51:1907-17. 2006..The findings suggest that with a flattening filter free accelerator better radiation treatments can be developed, with shorter delivery times and lower doses to normal tissues and organs... - Effect of output variation with dose rate on the Virtual Wedge factorX Ronald Zhu
Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
J Appl Clin Med Phys 9:2784. 2008..Our results support the recommendation that VWF be measured for large field sizes (e.g., 20 ' 20 cm2) and large wedge angles (e.g., 60 degrees) as a part of routine quality assurance... - Evaluation of precalibrated implantable MOSFET radiation dosimeters for megavoltage photon beamsTina Marie Briere
Department of Radiation Physics, Division of Radiation Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA
Med Phys 32:3346-9. 2005..Thus, although the calibration of the detector is most accurate for doses close to the calibration dose of 200 cGy, it may be used over the range of commonly used doses in fractionated radiotherapy... - Neutron-induced electronic failures around a high-energy linear acceleratorStephen F Kry
Department of Radiation Physics, M D Anderson Cancer Center, The University of Texas, 1515 Holcombe Boulevard, Houston, Texas 77030, USA
Med Phys 38:34-9. 2011..After a new in-vault CT-on-rails system repeatedly malfunctioned following use of a high-energy radiotherapy beam, we investigated the presence and impact of neutron radiation on this electronic system, as well as neutron shielding options... - Planning quality and delivery efficiency of sMLC delivered IMRT treatment of oropharyngeal cancers evaluated by RTOG H-0022 dosimetric criteriaX Ronald Zhu
Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
J Appl Clin Med Phys 5:80-95. 2004..A retrospective comparison indicates that delivery efficiency is improved on the order of 30% compared to plans generated with 9 IMBs with 5 ILs... - Daily targeting of liver tumors: screening patients with a mock treatment and using a combination of internal and external fiducials for image-guided respiratory-gated radiotherapySunil Krishnan
Department of Radiation Oncology, MD Anderson Cancer Center, Houston, Texas 77030, USA
Med Phys 34:4591-3. 2007..This technique could screen patients for gated therapy, reduce setup inaccuracy, and possibly individualize treatment margins... - Simplified "on-couch" daily quality assurance procedure for CT simulatorsRuijie Rachel Liu
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, Houston, Texas, USA
J Appl Clin Med Phys 10:2844. 2009..By using the proposed program and phantom, we have been able to implement a more thorough QA program while decreasing the amount of effort and time the simulation therapists spend performing laser and imaging QA... - Design and implementation of an anthropomorphic quality assurance phantom for intensity-modulated radiation therapy for the Radiation Therapy Oncology GroupAndrea Molineu
Department of Radiation Physics, The University of Texas M D Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
Int J Radiat Oncol Biol Phys 63:577-83. 2005....