For an x-ray beam operated at 90 kVp, the required minimum filtration must be
A)0.7 mm Al/Eq inherent plus 1.0 mm Al/Eq added.
B)1.0 mm Al/Eq inherent plus 1.5 mm Al/Eq added.
C)0.5 mm Al/Eq inherent plus 1.0 mm Al/Eq added.
D)none of the above

Question

Quizplus · Accepted Answer

According to the NCRP Report No. 147, for an x-ray beam operated at 90 kVp, the required minimum filtration is 1.5 mm Al/Eq total, which includes 1.0 mm Al/Eq inherent plus 0.5 mm Al/Eq added. Therefore, the best choice is B, which includes the required 1.0 mm Al/Eq inherent filtration and 1.5 mm Al/Eq total filtration.

For an X-Ray Beam Operated at 90 KVp, the Required