Question

Which of the following combinations of mA and scan time will result in 350 mAs and be the best choice for a cardiac scan?

a. 300 mA, scan time 0.50 seconds
b. 300 mA, scan time 2 seconds
c. 350 mA, scan time 1 second
d. 700 mA, scan time 0.5 seconds

Answer 1

The best choice for a cardiac scan is 350 mA and 1 second scan time, resulting in 350 mAs.

Step-by-step explanation:

To determine the best choice for a cardiac scan, we need to find the combination of mA and scan time that results in 350 mAs. mAs is calculated by multiplying mA by scan time. Let's calculate mAs for each option:

a. 300 mA × 0.50 seconds = 150 mAs

b. 300 mA × 2 seconds = 600 mAs

c. 350 mA × 1 second = 350 mAs

d. 700 mA × 0.5 seconds = 350 mAs

Option c, with a combination of 350 mA and 1 second, will result in 350 mAs and is the best choice for a cardiac scan.