Question

If the original radiograph has a good IR exposure and the mAs is increased, which of these statements is true?

1) Receptor exposure increases
2) Contrast increases
3) Receptor exposure decreases
4) Contrast decreases
5) Receptor exposure stays the same
6) Contrast stays the same

a.1 and 2
b.2 and 3
c.2 and 5
d.1 and 4
e.3 and 6
f.3 and 4

Answer 1

Increasing the mAs in radiography results in increased receptor exposure and decreased contrast, assuming all other factors remain constant. Therefore, the correct option is d.

Step-by-step explanation:

If the original radiograph has a good Image Receptor (IR) exposure and the mAs is increased, two changes can be expected: (1) the receptor exposure will increase because mAs is directly proportional to the amount of radiation that reaches the receptor, and (4) the contrast will decrease assuming a film-screen system, because increasing the mAs usually results in a higher density on the film, which can lower contrast if other factors such as developer temperature and developing time are kept constant. Hence, the correct answer to this question would be d. 1 and 4.