Results 221 to 230 of about 36,702 (248)

Intensity-modulated radiotherapy for sinonasal teratocarcinosarcoma

Journal of Huazhong University of Science and Technology [Medical Sciences], 2011
Surgical excision and postoperative radiotherapy are widely accepted therapeutic modalities for sinonasal teratocarcinosarcoma (SNTCS). Previous studies have shown that intensity-modulated radiation therapy (IMRT) is safe and effective for the treatment of some sinonasal malignancies.
Yiming Feng, Tao Wang, Yuehua Li, Yang Ke, Gang Peng, Gang Wu   +5 more
openaire   +3 more sources

Intensity-modulated Radiotherapy in the Treatment of Prostate Cancer

Clinical Oncology, 2012
Intensity-modulated radiotherapy (IMRT) is an advancement in radiotherapy that uses intensity-modulated beams, which can provide multiple intensity levels for any single beam direction and any single source position, allowing shaped distributions and dose gradients with narrower margins than previously possible.
R.B. Rumble, J Chen, Glenn Bauman, Andrew Loblaw, Padraig Warde   +4 more
openaire   +4 more sources

Conformal Radiotherapy and Intensity-modulated Radiotherapy: Clinical Data

Acta Oncologica, 2000
Conformal radiotherapy (CRT) is based on three hypotheses: (i) a higher rate of local control can improve the survival rate; (ii) dose escalation can increase tumor control; and (iii) CRT allows the delivery of higher doses by decreasing the incidence of late effects. These postulates are now supported by several data.
Maurice Tubiana, Francois Eschwège
openaire   +3 more sources

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

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