Treatment Planning Test
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| A. 1,622 years (W/L, pg. 303). B. Physical dimensions set on the collimators of the therapy unit that determine the size of the treatment field at a reference distance (W/L, pg. 494). C. 20 cGy/min. (Mosbyâs RT Study Guide, pg. 108).D. 2.7 days (W/L, pg. 303). E. (102.4/x) = (85.5/100)^2; x = 140 cGy/Min.F. HA = 180 - 2(wedge angle) (RT Essentials, pg. 135)G. The distance from the source of photons to the patient’s skin surface (W/L, pg. 494).H. Smaller.I. 0.5 to 2.0 cGy/min. (Mosbyâs RT Study Guide, pg. 108).J. The measurement of the patient’s thickness from the point of beam entry to the point of beam exit (W/L, pg. 494).K. 30.0 years (W/L, pg. 303).
L. Er =MeV/2; Er = 10 MeV/2; Er = 5 cmM. (17/2 x 3/92) + (15/2 x 3/91)
(8.5 x .0326) + (7.5 x .0324)
(.2771 + .0243)
Gap= .52N. 180/0.60 = 300 cGy.O. MeV/4 (W/L, pg. 555).P. A = (0.66mg/cm) x (active length of source in cm)Q. ISCF = (Reference source calibration distance)^2 / (Treatment SSD +Dmax)^2
*(Reference source calibration distance = Reference distance + Dmax for the energy) (W/L, pg. 508).
R. 9 X 25; 1.33 x 7 cm = 9.31 cm; 1.33 x 19 cm = 25.27 cmS. Greater.T. TD= (Given dose x PDD at depth of calculation)/100 (W/L, pg. 509). |
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