Question

6. 0.85 The following data are provided for the survival of a hamster cell line grown in vitro immediately after irradiation a. Plot the data graphically as a Surviving Fraction semilog plot (in excel or on (cGy) semilog graph paper). From 1.00 your plot determine the multi- target, single-hit parameters Do, Dand n, and write the 150 0.33 mathematical expression with 2000 .16 these parameters 10.064 b. Repeat part (a) using the linear- 0.024 quadratic model to fit the data 400 0.0035 What are the values of pa and 052 PB?

Answer 1

Semi-logarithmic plot Surviving fraction Surviving fraction 500 Dose

linear quadratic graph y = -0.0027x+0.855 R? = 0.8595 Surviving fraction Linear (Surviving fraction) — Surviving fraction 100 200 300 400 500 Dose