ARRT N Practice Test 10

10 free ARRT N practice questions in the real exam format, covering the official content areas, with an explanation for every answer.

ARRT N Practice Test 10Tutor mode

Question 1 of 10

Image Production

A weekly extrinsic flood with a Co-57 sheet source and the low-energy high-resolution collimator shows a small, sharply marginated area of reduced counts near one edge. An intrinsic flood acquired right afterward is uniform. What is the MOST likely cause?