Relative Biological Effectiveness and Oxygen Enhancement Ratio of 50 Mv X-Rays
نویسندگان
چکیده
منابع مشابه
Characterization of relative biological effectiveness for conventional radiation therapy: a comparison of clinical 6 MV X-rays and 137Cs
Various types of radiation are utilized in the treatment of cancer. Equal physical doses of different radiation types do not always result in the same amount of biological damage. In order to account for these differences, a scaling factor known as the relative biological effectiveness (RBE) can be used. 137Cesium (137Cs) has been used as a source of radiation in a significant body of radiation...
متن کاملClinical relative biological effectiveness of low-energy x-rays emitted by miniature x-ray devices.
Several groups are developing ultra-miniature x-ray machines for clinical use in radiation therapy. Current systems are for interstitial radiosurgery and for intravascular insertion for irradiation to prevent re-stenosis. Typical generating voltages are low, in the 20 to 40 kV range. It is well established that the biological effectiveness of such low-energy photons is large compared with highe...
متن کاملT H E Relative Biological Effectiveness O F Fast Organisms Neutrons 'and X-rays upon Different
A given amount of ionization produced by fast neutrons has an injurious biological action equivalent to that of several times as much ionization produced by x-rays. This has been demonstrated for various biological systems by Lawrence and Lawrence ( l ) , Zirkle and Aebersold ( 2 ) and Lawrence, Aebersold and Lawrence ( 3 ) . This fact indicates that the mechanism of biological action of fast n...
متن کاملrelative biological effectiveness (rbe) of 131i radiation relative to 60co gamma rays
objective: to assess relative biological effectiveness (rbe) of 131i radiation relative to 60co gamma rays in glioblastoma spheroid cells. materials and methods: in this experimental study, glioblastoma spheroid cells were exposed to 131i radiation and 60co gamma rays. radiation induced dna damage was evaluated by alkaline comet assay. samples of spheroid cells were treated by radiation from 13...
متن کاملRelative Biological Effectiveness (RBE) of 131I Radiation Relative to 60Co Gamma Rays
OBJECTIVE To assess relative biological effectiveness (RBE) of (131)I radiation relative to (60)Co gamma rays in glioblastoma spheroid cells. MATERIALS AND METHODS : In this experimental study, glioblastoma spheroid cells were exposed to (131)I radiation and (60)Co gamma rays. Radiation induced DNA damage was evaluated by alkaline comet assay. Samples of spheroid cells were treated by radiati...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Oncologica
سال: 1989
ISSN: 0284-186X,1651-226X
DOI: 10.3109/02841868909092264