What is true for the alpha/beta ratio A. It is unitless B. It is a direct measur

Question

What is true for the alpha/beta ratio A. It is unitless B. It is a direct measure of the shoulder of the survival curve C. It measures the sensitivity of a tissue to changes in size of dose fractions D. It is the ratio where the number of non-repairable lesions equals that for repairable lesions Which Parameter contributes most to cell killing in standard clinical fractionated regimens in Radiation Therapy A. The alpha/beta ratio B. D_0 C. Alpha D. Beta The alpha/beta ratio for mucosal tissues is closest to A. 1 Gy B. 3 Gy C. 5 Gy D. 10 Gy If tissue tolerance is 60 Gy at 2 Gy/fraction and 40 Gy at 4 Gy/fraction. What is its alpha/beta ratio? A. 1 Gy B. 2 Gy C. 4 Gy D. 10 Gy It is decided to treat a patient with hypofractionation at 3 Gy/fraction instead of the conventional schedule of 60 Gy in 2 Gy fractions. What total dose should be delivered in order for the risk of late normal-tissue damage to remain unchanged? (Assuming alpha/beta ratio for late respon

Explanation / Answer

20. in the branch of radiobiology Alpha-Beta shows the survival rate. higher the alpha-beta ratio higher will be the survival rate.

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