Ryan T Flynn
Affiliation: University of Iowa
- Dosimetric characterization and application of an imaging beam line with a carbon electron target for megavoltage cone beam computed tomographyRyan T Flynn
Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52245, USA
Med Phys 36:2181-92. 2009..The resulting composite dose distributions, assuming similar imaging doses, are negligibly different from those of the TBL. The increased IBL surface dose relative to the TBL is likely clinically insignificant...
- Loss of radiobiological effect of imaging dose in image guided radiotherapy due to prolonged imaging-to-treatment timesRyan T Flynn
Department of Radiation Oncology, University of Iowa, 200 Hawkins Drive, Iowa City, Iowa 52242, USA
Med Phys 37:2761-9. 2010..The theoretical magnitude of this effect was quantified using radiobiological modeling...
- Rotating-shield brachytherapy for cervical cancerWenjun Yang
Department of Biomedical Engineering, University of Iowa, 1402 Seamans Center for the Engineering Arts and Sciences, Iowa City, IA 52242, USA
Phys Med Biol 58:3931-41. 2013..59 (3.57-70.13) min over IS+ICBT. RSBT can increase D90 over ICBT and IS+ICBT without compromising organ-at-risk sparing. The D90 and treatment time improvements from RSBT depend on the patient and shield emission angle...
- Equivalent-quality unflattened photon beam modeling, planning, and deliveryYunfei Huang
Department of Radiation Oncology, Division of Medical Physics, University of Iowa Hospitals and Clinics, Iowa City, IA 52242, USA
J Appl Clin Med Phys 14:4211. 2013..In both methods, the point dose differences were all within 2% difference. In the relative 2D dose distribution comparison, >95% points were within 3% dose difference or 3 mm DTA. ..
- Dynamic rotating-shield brachytherapyYunlong Liu
Department of Electrical and Computer Engineering, University of Iowa, 4016 Seamans Center, Iowa City, Iowa 52242
Med Phys 40:121703. 2013....
- Target volume changes through high-dose-rate brachytherapy for cervical cancer when evaluated on high resolution (3.0 Tesla) magnetic resonance imagingWenqing Sun
Department of Radiation Oncology, University of Iowa Hospitals and Clinics, Iowa City, Iowa
Pract Radiat Oncol 2:e101-6. 2012..To evaluate tumor volume changes that occurred during courses of high-dose-rate brachytherapy (HDR) using high resolution (3.0 Tesla) magnetic resonance imaging (MRI), along with the regression after external beam radiation therapy (EBRT)...
- Interstitial rotating shield brachytherapy for prostate cancerQuentin E Adams
Department of Radiation Oncology, University of Iowa, 200 Hawkins Drive, Iowa City, Iowa 52242
Med Phys 41:051703. 2014..I-RSBT is a promising technique for reducing urethra, rectum, and bladder dose relative to conventional interstitial high-dose-rate brachytherapy (HDR-BT)...
- Rapid emission angle selection for rotating-shield brachytherapyYunlong Liu
Department of Electrical and Computer Engineering, University of Iowa, 4016 Seamans Center, Iowa City, Iowa 52242, USA
Med Phys 40:051720. 2013..The REAS method produces a Pareto curve from which a potential RSBT user can select a treatment plan that balances the tradeoff between delivery time and tumor dose conformity...
- Image quality improvement in megavoltage cone beam CT using an imaging beam line and a sintered pixelated array systemElizabeth K Breitbach
Department of Radiation Oncology, University of Iowa, Iowa City, IA, USA
Med Phys 38:5969-79. 2011..The IBL produces a greater fluence of keV-range photons than the TBL, to which the detector response is more optimal, and the SPA is a more efficient scintillator than the LFB...
- The energy margin strategy for reducing dose variation due to setup uncertainty in intensity modulated proton therapy (IMPT) delivered with distal edge tracking (DET)Miao Zhang
Department of Radiation Oncology, 1 The Cancer Institute of New Jersey, UMDNJ Robert Wood Johnson Medical School, New Brunswick, NJ 08901, USA
J Appl Clin Med Phys 13:3863. 2012..Both ORG and EM plans did not produce more than 5% overdose to D2% of the ring structure. The use of an EM for IMPT treatment planning can substantially reduce sensitivity of the resulting dose distributions to setup uncertainty...
- High-dose MVCT image guidance for stereotactic body radiation therapyDavid C Westerly
Department of Radiation Oncology, University of Colorado School of Medicine, Aurora, Colorado 80045, USA
Med Phys 39:4812-9. 2012..The goal of this work was to investigate the use of increased imaging doses on a clinical tomotherapy machine to improve image quality for SBRT image guidance...
- Assessment of three dead detector correction methods for cone-beam computed tomographyDavid W Nelms
University of Iowa Hospitals and Clinics, Iowa City, Iowa 52245, USA
Med Phys 36:4569-76. 2009....