Results 331 to 340 of about 162,707 (386)
Some of the next articles are maybe not open access.
Intensity modulated radiotherapy
2012Intensity-modulated radiotherapy (IMRT) is a radiation delivery technique that allows “dose sculpting” to improve target coverage while sparing normal tissues. In an IMRT plan, the number of photons delivered (or “fluence”) varies within a field. Such variability can be used to avoid normal structures with lower radiation tolerance than the cancer and ...
Bridget F. Koontz +2 more
openaire +2 more sources
Conformal Radiotherapy and Intensity-modulated Radiotherapy: Clinical Data
Acta Oncologica, 2000Conformal 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.
M, Tubiana, F, Eschwège
openaire +2 more sources
Submandibular Gland-sparing Intensity-modulated Radiotherapy
American Journal of Clinical Oncology, 2014Xerostomia 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 +2 more
openaire +2 more sources
Intensity-Modulated Radiotherapy for Pancreatic Adenocarcinoma
International Journal of Radiation Oncology*Biology*Physics, 2012To report the outcomes and toxicities in patients treated with intensity-modulated radiotherapy (IMRT) for pancreatic adenocarcinoma.Forty-seven patients with pancreatic adenocarcinoma were treated with IMRT between 2003 and 2008. Of these 47 patients, 29 were treated adjuvantly and 18 definitively.
Jonathan A, Abelson +11 more
openaire +2 more sources
Practical experience with intensity-modulated radiotherapy
The British Journal of Radiology, 2004At the Ipswich Hospital implementation of intensity-modulated radiotherapy (IMRT) commenced in February 2001 based on an established 3D conformal radiotherapy (3D CRT) service. This paper describes our experiences as we commissioned a fully-integrated IMRT planning and delivery system, and established IMRT within the department.
H V, James, C D, Scrase, A J, Poynter
openaire +2 more sources
Intensity-modulated radiotherapy for sinonasal teratocarcinosarcoma
Journal of Huazhong University of Science and Technology [Medical Sciences], 2011Surgical 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.
Gang, Peng +5 more
openaire +2 more sources
Rectal Radiotherapy — Intensity-modulated Radiotherapy Delivery, Delineation and Doses
Clinical Oncology, 2016The use of intensity-modulated radiotherapy in rectal cancer is attractive in that it may reduce acute and late toxicities and potentially facilitate dose escalation. Intensity-modulated radiotherapy probably has a role in selected patients, but further investigation is required to identify the parameters for selection.
S, Teoh, R, Muirhead
openaire +2 more sources
Intensity modulation methods for proton radiotherapy
Physics in Medicine and Biology, 1999The characteristic Bragg peak of protons or heavy ions provides a good localization of dose in three dimensions. Through their ability to deliver laterally and distally shaped homogenous fields, protons have been shown to be a precise and practical method for delivering highly conformal radiotherapy.
openaire +2 more sources
Gradients and intensity modulated radiotherapy
Proceedings of the 22nd Annual International Conference of the IEEE Engineering in Medicine and Biology Society (Cat. No.00CH37143), 2002A consequence of the advent of intensity modulated radiation therapy (IMRT) is the presence of large dose gradients surrounding the tumor, and the regions at risk (RAR's) near the tumor. Unlike standard radiotherapy, these gradients are not the chance result of a few beam choices, but rather they are strategically placed by the optimization software. A
J.M. Kapatoes +5 more
openaire +1 more source
Quality assurance of intensity-modulated radiotherapy
Seminars in Radiation Oncology, 2002Intensity-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