TalThe table below lists the surviving fraction of cells for a microorganism as

Question

TalThe table below lists the surviving fraction of cells for a microorganism as a function of dose. Using the graph paper provided, plot survival curve and obtain the D10 value and the fraction of expected cells Nex/No at D- 0 kGy. What type of survival curve dose the data indicate? Dose (kGy) N/No 0 12 15 18 21 24 0.9 0.4 0.1 0.02 0.003 0.0006 0.0001 b)With the aid of the diagram describe the depth dose curves and the process used in an irradiator design using a plaque radionuclide source irradiate a product with uniform dose within the dose limit

Explanation / Answer

With increasing dose survival of expected cells is decreasing. The survival curve shown will be of type II i.e. a straight line will be observed with a negative slope.

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