Zobrazeno 1 - 10
of 435
pro vyhledávání: '"Geoffrey S. Ibbott"'
Autor:
Jalil Ur Rehman, Muhammad Isa, Nisar Ahmad, Gulfam Nasar, H M. Noor Ul Huda Khan Asghar, Zaheer Abbas Gilani, James C. L. Chow, Muhammad Afzal, Geoffrey S Ibbott
Publikováno v:
Journal of Medical Physics, Vol 43, Iss 2, Pp 129-135 (2018)
This analysis estimated secondary cancer risks after volumetric modulated arc therapy (VMAT) and compared those risks to the risks associated with other modalities of head-and-neck (H&N) radiotherapy. Images of H&N anthropomorphic phantom were acquir
Externí odkaz:
https://doaj.org/article/a7e817c1bb3249a8bcf0a4ed33cfcd94
Autor:
Geoffrey S. Ibbott, Arun Chougule, John Damilakis, Slavik Tabakov, Raymond K. Wu, Colin G. Orton, Tomas Kron
Publikováno v:
Health and Technology. 12:663-670
As a profession, medical physics combines an advanced understanding of physics and math with knowledge of biology, anatomy and physiology. Consequently, rigorous education and training is required to assure that medical physicists have the requisite
Publikováno v:
Journal of Physics: Conference Series. 2167:012001
Radiochromic FXG gel dosimeters were investigated for end-to-end validation of TG-119 plans delivered in the pre-clinical Elekta 1.5 T-7 MV FFF MR-Linac. Due to the noise levels in the T1-weighted MR images, this preliminary study investigated post-p
Autor:
Geoffrey S. Ibbott
Publikováno v:
Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB). 72
Recent publications show that some patients receive high cumulative radiation doses from recurrent CT examinations. Most of these patients had a diagnosis of malignancy, meaning that there was a likelihood that they would receive radiation therapy, p
Publikováno v:
Radiation Measurements. 116:10-13
Purpose To characterize the response of plastic scintillation detectors (PSDs) to high-energy photon radiation as a function of magnetic field strength. Materials and methods PSDs were placed inside a plastic phantom held at the center point between
Autor:
Muhammad Akram, Kent A Gifford, Saeed Ahmad Buzdar, Geoffrey S. Ibbott, Khalid Iqbal, Ryan Grant Lafratta
Publikováno v:
Journal of Radiotherapy in Practice. 17:403-410
PurposeTo determine the feasibility of an anthropomorphic breast polyurethane-based three-dimensional (3D) dosimeter with cavity to measure dose distributions and skin dose for a commercial strut-based applicator strut-adjusted volume implant (SAVI
Autor:
Muhammad Isa, Zaheer Abbas Gilani, James C. L. Chow, Geoffrey S. Ibbott, Jalil ur Rehman, H.M. Noor ul Huda Khan Asghar, Nisar Ahmad, Muhammad Afzal
Publikováno v:
Journal of Radiotherapy in Practice. 17:441-446
BackgroundAccurate three-dimensional dosimetry is essential in modern radiotherapy techniques such as volumetric-modulated arc therapy (VMAT) and intensity-modulated radiation therapy (IMRT). In this research work, the PRESAGE® dosimeter was used as
Autor:
Kristy K. Brock, Mona Kamal, Michalis Aristophanous, Adam S. Garden, Geoffrey S. Ibbott, Katherine A. Hutcheson, Houda Bahig, Jack Phan, Jihong Wang, Pierre Blanchard, Yao Ding, David I. Rosenthal, Stephen Y. Lai, Clifton D. Fuller, Carlos E. Cardenas, Refaat E. Gabr, Abdallah S.R. Mohamed, G. Brandon Gunn, Ponnada A. Narayana
Publikováno v:
Clinical and Translational Radiation Oncology
Clinical and Translational Radiation Oncology, Vol 11, Iss, Pp 11-18 (2018)
Clinical and Translational Radiation Oncology, Vol 11, Iss, Pp 11-18 (2018)
Highlights • The average dose to 95% of initial PTV volume was 70.7 Gy for standard plans vs. 58.5 Gy for adaptive plans. • MRI-guided adaptive approach resulted in decrease dose to normal tissue compared with standard plans. • NTCP of post-tre
Publikováno v:
Medical Physics. 45:1204-1209
Purpose To assess the image quality, scatter, and leakage radiation of an integrated magnetic resonance linear accelerator (MR-LINAC or MRL) system. Methods A large American College of Radiology (ACR) magnetic resonance imaging (MRI) accreditation ph
Autor:
Larry A. DeWerd, Wayne M. Butler, Geoffrey S. Ibbott, Facundo Ballester, Mark J. Rivard, Christopher S. Melhus, Ali S. Meigooni, Michael G. Mitch, Ravinder Nath, Panagiotis Papagiannis
Publikováno v:
Medical Physics. 45:971-974