Radiotherapy with Cutting Field IMRT (CFIMRT)
To achieve the dose distribution corresponding to that in IMRT using a conventional irradiation method, we propose the combination of rectangular rotation irradiation and fixed multiport irradiation (cutting field IMRT). In this site, I will demonstrate several clinical cases and these 'templates'.
No smallsegments are used for planning by CFIMRT. So this method is different from 'conventional IMRT '. <Reference>
The information provided on this 'Cutting Field IMRT' website is designed to support, not replace, the relationship that exists between a patient/site visitor and his/her physician. This site provide technical guidance for medical professionals, but you must use these information by your responsibility. Cutting Field IMRT is one of techniques for radiation therapy. This site will provide its information for medical professionals. If you are not a medical specialist, please talk with health professionals when you use the informations of this site. (Medical guidelines and medical insurance system are different by countries and districts.)
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(Low dose irradiation for large volume maybe induce radiation pneumonitis, so the public viewing of 'Lung session' will be suspended.)
('The mean V(20) of the non-PRD patients was considerably lower than that accepted during standard thoracic radiotherapy, implying that the V(20) should be kept as low as possible after extrapleural pneumonectomy.')
Shueng PW, Lin SC, Chang HT, et al. Toxicity risk of non-target organs at risk receiving low-dose radiation: case report. Radiat Oncol. 31;4(1):71., 2009 [Epub ahead of print]
Das IJ, Cheng CW, Chopra KL, et al. Intensity-Modulated Radiation Therapy Dose Prescription, Recording, and Delivery: Patterns of Variability Among Institutions and Treatment Planning Systems. J Natl Cancer Inst. 2008 Mar 5;100(5):300-7. Epub 2008 Feb 26.
In this article, several problems about IMRT are described. Please read its PDF file (free access)
'IMRT produces relatively greater dose inhomogeneity than 3D-CRT, even though it is theoretically supposed to provide a uniform dose.'
PowerPoint files are stored to briefcase if you need detailed drawing images.->Yahoo BriefCase
Whole neck 66Gy by dose painting (updated)
In comparison MLC doesn't move during irradiation at each directions and no subsegments are used in CFIMRT.
'Segments' and 'Intensity Map' of IMRT: GIF animation (Segments are not used basically at CFIMRT)
last modification date: 2012/11/26