Results 341 to 350 of about 154,558 (375)

Commissioning of intensity modulated neutron radiotherapy (IMNRT)

Medical Physics, 2013
Intensity modulated neutron radiotherapy (IMNRT) has been developed using inhouse treatment planning and delivery systems at the Karmanos Cancer Center∕Wayne State University Fast Neutron Therapy facility. The process of commissioning IMNRT for clinical use is presented here. Results of commissioning tests are provided including validation measurements
Michael Snyder, Robyn Spink, Todd Bossenberger, John Brandon, Robert Halford, Jonathan Delauter, Jay Burmeister, Liang Liang   +7 more
openaire   +3 more sources

Long‐term outcome and pattern of failure for patients with nasopharyngeal carcinoma treated with intensity‐modulated radiotherapy

Head and Neck, 2018
To analyze the long‐term outcome and pattern of failure for patients with nasopharyngeal carcinoma (NPC) after intensity‐modulated radiotherapy (IMRT).
Yun-Ming Tian, Ming-Zhu Liu, L. Zeng, Li Bai, Cheng‐guang Lin, Shao-min Huang, Xiaowu Deng, Chong-Zhao, T. Lu, F. Han   +9 more
semanticscholar   +1 more source

Comparison of the incidence of osteoradionecrosis with conventional radiotherapy and intensity‐modulated radiotherapy

Head & Neck, 2016
AbstractBackgroundModern techniques of radiotherapy are supposed to decrease the incidence of osteoradionecrosis of the mandible (ORNM). The purpose of this study was to compare the incidence of ORNM after intensity‐modulated radiotherapy (IMRT) in comparison to conventional 3D conformal radiotherapy techniques (conventional RT).MethodsWe conducted a ...
Maesschalck, Thibault De, Dulguerov, Nicolas, Caparrotti, Francesca, Scolozzi, Paolo, Picardi, Cristina, Mach, Nicolas, Koutsouvelis, Nikolaos, Dulguerov, Pavel   +7 more
openaire   +4 more sources

Regularization of inverse planning for intensity-modulated radiotherapy

Medical Physics, 2005
The performance of a variational regularization technique to improve robustness of inverse treatment planning for intensity modulated radiotherapy is analyzed and tested. Inverse treatment planning is based on the numerical solutions to the Fredholm integral equation of the first kind which is ill-posed.
Timothy J. Kinsella, Alexei V. Chvetsov, Daniela Calvetti, Jason W. Sohn   +3 more
openaire   +2 more sources

Hardware-sensitive optimization for intensity modulated radiotherapy [PDF]

Physics in Medicine and Biology, 2000
The multileaf collimator (MLC) hardware constraints are usually neglected in the process of intensity-modulated beam optimization. Consequently, it is not always possible to deliver planned beam modulation using dynamic MLC. Beam optimization is significantly diminished if the results must be approximated due to limitations imposed by the delivery ...
Robert J. Marks, Paul S. Cho
openaire   +2 more sources

Optimizing the planning of intensity-modulated radiotherapy

Physics in Medicine and Biology, 1994
A method of computing optimized intensity-modulated beam profiles has been further developed and used to generate highly conformal radiotherapy dose distributions. The features of these distributions are shown to be strongly dependent on the tuning built into the algorithm.
openaire   +3 more sources

Quality assurance of intensity-modulated radiotherapy

Seminars in Radiation Oncology, 2002
Intensity-modulated radiation therapy (IMRT) requires the use of inverse treatment planning and nonuniform fluence beams delivered by a series of complex radiation portals. The quality assurance procedures for conventional three-dimensional conformal radiation therapy (3D-CRT) have been developed and are in worldwide clinical use, but the more complex ...
openaire   +2 more sources

Energy- and intensity-modulated electron beams for radiotherapy

Physics in Medicine and Biology, 2000
This work investigates the feasibility of optimizing energy- and intensity-modulated electron beams for radiation therapy. A multileaf collimator (MLC) specially designed for modulated electron radiotherapy (MERT) was investigated both experimentally and by Monte Carlo simulations.
Edward Mok, Jun Deng, C.-M. Ma, Arthur L. Boyer, Byong Yong Yi, M. C. Lee, Todd Pawlicki, J. S. Li, Steve B. Jiang   +8 more
openaire   +2 more sources

Combination of submandibular salivary gland transfer and intensity‐modulated radiotherapy to reduce dryness of mouth (xerostomia) in patients with head and neck cancer

Head and Neck, 2018
Xerostomia is a debilitating side effect of radiotherapy for head and neck cancer. Combining surgical submandibular‐gland transfer (SMGT) with intensity‐modulated radiotherapy (IMRT) may provide greater protection of salivary function.
R. Scrimger, H. Seikaly, L. Vos, J. Harris, D. O’Connell, Sunita Ghosh, B. Debenham, N. Jha   +7 more
semanticscholar   +1 more source

Submandibular Gland-sparing Intensity-modulated Radiotherapy

American Journal of Clinical Oncology, 2014
Xerostomia is one of the most debilitating late effects of head and neck radiotherapy (RT) and significantly impacts quality of life. The submandibular gland (SMG) provides approximately 70% of the unstimulated saliva that accounts for about 95% of the salivary flow during a 24-hour period. Intensity-modulated RT (IMRT) has been used in recent years to
William M. Mendenhall, Charles M. Mendenhall, Nancy P. Mendenhall   +2 more
openaire   +3 more sources