Asked in CancerSkin CancerGermany in WW2Breast Cancer
Germany in WW2
How much radiation in grays is given to a patient for treatment?
October 07, 2007 8:57AM
It depends on the type of cancer, location of cancer and delivery system of the radiation. For example a metastatic lesion to the brain would receive 30 to 35 gray. Lung cancer treatment for cure would be around 50 gray. Prostate cancer 70-80 gray.
Asked in Chemistry, Drug Addiction, Ativan
What is considered a lethal dose of radiation?
Lethal radiation dose varies, depending on physical condition and care given after receipt of dose. There is a grey area (no pun intended) between 6 and 8 Grays (a unit of ionizing radiation), equivalent to about 600 to 800 rads (in the old nomenclature), where 95% to 100% of those untreated will die, and 50% to 100% of those treated will die. Above 8 Grays, 800 rads, 100% will die. For gamma radiation, one Gray is approximately equal to one Sievert, which is a unit of dose equivalent for biological tissue, so these numbers are comparable, i.e. 8 Sieverts or 800 rem.