Ryan T Flynn

Summary

Affiliation: University of Iowa
Country: USA

Publications

  1. ncbi request reprint Dosimetric characterization and application of an imaging beam line with a carbon electron target for megavoltage cone beam computed tomography
    Ryan T Flynn
    Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52245, USA
    Med Phys 36:2181-92. 2009
  2. ncbi request reprint Loss of radiobiological effect of imaging dose in image guided radiotherapy due to prolonged imaging-to-treatment times
    Ryan T Flynn
    Department of Radiation Oncology, University of Iowa, 200 Hawkins Drive, Iowa City, Iowa 52242, USA
    Med Phys 37:2761-9. 2010
  3. doi request reprint Rotating-shield brachytherapy for cervical cancer
    Wenjun 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
  4. pmc Dynamic rotating-shield brachytherapy
    Yunlong Liu
    Department of Electrical and Computer Engineering, University of Iowa, 4016 Seamans Center, Iowa City, Iowa 52242
    Med Phys 40:121703. 2013
  5. doi request reprint Equivalent-quality unflattened photon beam modeling, planning, and delivery
    Yunfei 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
  6. doi request reprint A method to select aperture margin in collimated spot scanning proton therapy
    Dongxu Wang
    Department of Radiation Oncology, University of Iowa, 200 Hawkins Drive, Iowa City, IA 52242, USA
    Phys Med Biol 60:N109-19. 2015
  7. doi request reprint Asymmetric dose-volume optimization with smoothness control for rotating-shield brachytherapy
    Yunlong Liu
    Department of Electrical and Computer Engineering, University of Iowa, 4016 Seamans Center, Iowa City, Iowa 52242
    Med Phys 41:111709. 2014
  8. doi request reprint Interstitial rotating shield brachytherapy for prostate cancer
    Quentin E Adams
    Department of Radiation Oncology, University of Iowa, 200 Hawkins Drive, Iowa City, Iowa 52242
    Med Phys 41:051703. 2014
  9. doi request reprint Target volume changes through high-dose-rate brachytherapy for cervical cancer when evaluated on high resolution (3.0 Tesla) magnetic resonance imaging
    Wenqing Sun
    Department of Radiation Oncology, University of Iowa Hospitals and Clinics, Iowa City, Iowa
    Pract Radiat Oncol 2:e101-6. 2012
  10. doi request reprint A method for modeling laterally asymmetric proton beamlets resulting from collimation
    Edgar Gelover
    Department of Radiation Oncology, University of Iowa, 200 Hawkins Drive, Iowa City, Iowa 52242
    Med Phys 42:1321. 2015

Collaborators

Detail Information

Publications16

  1. ncbi request reprint Dosimetric characterization and application of an imaging beam line with a carbon electron target for megavoltage cone beam computed tomography
    Ryan 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...
  2. ncbi request reprint Loss of radiobiological effect of imaging dose in image guided radiotherapy due to prolonged imaging-to-treatment times
    Ryan 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...
  3. doi request reprint Rotating-shield brachytherapy for cervical cancer
    Wenjun 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...
  4. pmc Dynamic rotating-shield brachytherapy
    Yunlong Liu
    Department of Electrical and Computer Engineering, University of Iowa, 4016 Seamans Center, Iowa City, Iowa 52242
    Med Phys 40:121703. 2013
    ....
  5. doi request reprint Equivalent-quality unflattened photon beam modeling, planning, and delivery
    Yunfei 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. ..
  6. doi request reprint A method to select aperture margin in collimated spot scanning proton therapy
    Dongxu Wang
    Department of Radiation Oncology, University of Iowa, 200 Hawkins Drive, Iowa City, IA 52242, USA
    Phys Med Biol 60:N109-19. 2015
    ..A test case is presented which demonstrates agreement with the prediction made based on the proposed methods. When apertures are applied in a commercial treatment planning system this method may be implemented. ..
  7. doi request reprint Asymmetric dose-volume optimization with smoothness control for rotating-shield brachytherapy
    Yunlong Liu
    Department of Electrical and Computer Engineering, University of Iowa, 4016 Seamans Center, Iowa City, Iowa 52242
    Med Phys 41:111709. 2014
    ..This study proposes an efficient and effective RSBT dose optimization method which enables to produce smooth fluence maps...
  8. doi request reprint Interstitial rotating shield brachytherapy for prostate cancer
    Quentin 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)...
  9. doi request reprint Target volume changes through high-dose-rate brachytherapy for cervical cancer when evaluated on high resolution (3.0 Tesla) magnetic resonance imaging
    Wenqing 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)...
  10. doi request reprint A method for modeling laterally asymmetric proton beamlets resulting from collimation
    Edgar Gelover
    Department of Radiation Oncology, University of Iowa, 200 Hawkins Drive, Iowa City, Iowa 52242
    Med Phys 42:1321. 2015
    ..The model enables rapid beamlet calculation for spot scanning (SS) delivery using a novel penumbra-reducing dynamic collimation system (DCS) with two pairs of trimmers oriented perpendicular to each other...
  11. pmc Rapid emission angle selection for rotating-shield brachytherapy
    Yunlong 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...
  12. doi request reprint Image quality improvement in megavoltage cone beam CT using an imaging beam line and a sintered pixelated array system
    Elizabeth 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...
  13. doi request reprint Impact of spot size on plan quality of spot scanning proton radiosurgery for peripheral brain lesions
    Dongxu Wang
    Department of Radiation Oncology, University of Iowa, Iowa City, Iowa 52242
    Med Phys 41:121705. 2014
    ..To determine the plan quality of proton spot scanning (SS) radiosurgery as a function of spot size (in-air sigma) in comparison to x-ray radiosurgery for treating peripheral brain lesions...
  14. doi request reprint 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...
  15. doi request reprint High-dose MVCT image guidance for stereotactic body radiation therapy
    David 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...
  16. ncbi request reprint Assessment of three dead detector correction methods for cone-beam computed tomography
    David W Nelms
    University of Iowa Hospitals and Clinics, Iowa City, Iowa 52245, USA
    Med Phys 36:4569-76. 2009
    ....