منابع مشابه
Review of electron beam therapy physics.
For over 50 years, electron beams have been an important modality for providing an accurate dose of radiation to superficial cancers and disease and for limiting the dose to underlying normal tissues and structures. This review looks at many of the important contributions of physics and dosimetry to the development and utilization of electron beam therapy, including electron treatment machines,...
متن کاملField shaping in electron beam therapy.
In the treatment of superficial lesions with 8-13 MeV electrons, lead shields are often used to protect the underlying tissue. Measurements were made with film and ion chamber to analyse various aspects of external and internal shielding in electron beam therapy. Data were obtained on the thickness of lead required for shielding, the effect of blocking on dose-rate, electron-backscattering from...
متن کاملElectron beam therapy in patients with scleredema.
treatment with diphencyprone. Z Hautkr 1984; 59: 1080 ± 1083. 3. Weisshaar E, Neumann H-J, Gollnick H. Successful treatment of disseminated facial verrucae with contact immunotherapy. Eur J Dermatol 1998; 8: 488 ± 491. 4. Greenberg JH, Smith TL, Katz RM. Verrucae vulgares rejection. A preliminary study on contact dermatitis and cellular immune response. Arch Dermatol 1973; 107: 580 ± 582. 5. La...
متن کاملDeveloping a PC-based portal image contrast enhancement program
ABSTRACTBackground: Delivering the radiation dose to the target volume and minimizing the dose to normal tissues are the main objectives in radiotherapy. The aim of our study is to enhance the contrast of the portal image to increase the accuracy of delineation of the organs in the irradiation field. Methods: The software was written based on local enhancement of the pixel values in image ma...
متن کاملEffect of photo–electron therapy on human neoplastic cells
Background: Cancer is a complex disease with high rate of mortality. At present, Radiation therapy is one of the most common procedures to overcome this situation. The deficiency of conventional method is the lack of fatal dose transmission into the malignant tissue. Hence, uncertain dose may cause regeneration of cancer cells, and relapse of the disease and invasion of the cancer cells to ...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 1997
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00001356254