Ramer · Alavi Nuclear Medicine Technology

4 Instrumentation and Quality Assurance 3936) Of the following types of transmission phantoms,which one requires the fewest images to test the spatialresolution over the entire detector face?a. Hine-Duley phantomb. four quadrant bar phantomc. parallel line equal space phantomd. orthogonal hole phantom37) An orthogonal hole phantom cannot be used to testspatial linearity since it does not contain lead bars.a. trueb. false38) When using a 150 µCi source of 99m Tc to checkuniformity, a technologist measures the counts inone minute as 53,125. If the background in the roomis 352 cpm, what is the sensitivity of the system?a. 351 cpm/µCib. 354 cpm/µCic. 356 cpm/µCid. 360 cpm/µCi39) A technologist performs an extrinsic uniformitycorrection on Monday and it shows a nonuniformity of3%. On Tuesday, it is 8%. What would be the next step?a. check the photopeakb. call for service on machinec. remove the collimator and obtain intrinsic uniformityfloodd. a or c