In order for a CT x-ray photon to be measured, it must
1)enter the detector
2)be absorbed by the detector material
3)transmit through the detector to be back-projected
4)have sufficient energy to undergo a Compton interaction
5)be converted to light and then electrical energy as a signal
A)1, 3, 4, and 5
B)1, 2, and 5
C)1, 2, and 4
D)1, 4, and 5

Question

Quizplus · Accepted Answer

For a CT x-ray photon to be measured, it must enter the detector (1), be absorbed by the detector material (2), and be converted to light and then electrical energy as a signal (5). There is no mention of the photon requiring sufficient energy to undergo Compton interaction (4) or transmitting through the detector to be back-projected (3) in order to be measured. Therefore, the best choice(s) would be B, which includes options 1, 2, and 5.

In Order for a CT X-Ray Photon to Be Measured