A Satisfactory AP Lumbar Spine Radiograph Is Made Using 200

Multiple Choice

A satisfactory AP lumbar spine radiograph is made using 200 mA,0.25 sec,78 kVp,and 40-inch SID. Which of the following technique changes will produce a radiograph of similar density while providing less contrast and less exposure to the patient?

A) 200 mA, 0.12 sec, 90 kVp, 40-inch SID
B) 200 mA, 0.20 sec, 78 kVp, 36-inch SID
C) 400 mA, 0.12 sec, 78 kVp, 40-inch SID
D) 100 mA, 0.25 sec, 78 kVp, 40-inch SID