General Math
mAs
Direct
Indirect
Miscellaneous
100
3x+7=22
X= 5
100
Calculate mAs:
If the mA is 200 and the exposure time is 0.5 seconds, what is the mAs?
100 mAs
100
A radiographer originally uses 500 mA at 0.2 seconds, but the patient moves too much. To reduce motion, they decide to decrease the time to 0.1 seconds while maintaining the same mAs. What new mA setting should they use?
1000 mA
100
A radiologic technologist takes an X-ray at a distance of 60 cm from the X-ray tube with an intensity of 200 mR (milliroentgen). If the distance is changed to 120 cm, what will be the new intensity?
50 mR
100
he answer to a multiplication problem
Product
200
convert 35% to decimal
035
200
Given:
- mAs = 50
- Time = 0.25 sec
200 mA
200
Given:
- Initial mA = 600
- Initial Time = 0.15 sec
- New Time = 0.05 sec
- Need to keep the same mAs
What is the new mA setting?
1800 mA
200
An exposure is made at a distance of 40 inches with an intensity of 50 mR. If the distance is increased to 80 inches, what will the new intensity be?
12.5 mR
200
What does PEMDAS stand for?
Parentheses
Exponents
Multiplication
Division
Addition
Subtraction
300
3/4 X 5/5
15/20
300
If the mA is 300 and the total mAs is 75, what is the exposure time in seconds?
.25 sec
300
Given:
- Initial mA = 350
- Initial Time = 0.3 sec
- New Time = 0.15 sec
- Need to keep the same mAs
Question: What is the new mA setting?
700 mA
300
A patient is at a distance of 90 cm from the X-ray source, resulting in an intensity of 100 mR. If the distance is reduced to 45 cm, what will the new intensity?
400 mR
300
What is the prefix for thousand?
Kilo
400
250 milliseconds = ____ seconds
.25
400
A technique uses 400 mA at 0.2 seconds for an exposure. To reduce motion, the time is reduced to 0.1 seconds. What should the new mA be to maintain the same mAs?
800 mA
400
A radiologic technologist is preparing to take a knee X-ray. They initially set the machine to 200 mA and an exposure time of 0.4 seconds. After reviewing the initial settings, they realize they need to reduce the exposure time to 0.2 seconds to accommodate a patient with motion. What should the new mA setting be to maintain the same mAs?
400 mA
400
An X-ray is performed at a distance of 100 cm with an intensity of 75 mR. If the X-ray tube is moved to 150 cm, what is the new intensity?
33.33 mR
400
How many seconds are in one millisecond?
.001 sec
500
Turn 5/8 into a decimal
.625
500
An X-ray machine is set to 250 mA with an exposure time of 0.2 seconds. What is the mAs?
50 mAs
500
A radiologic technologist is preparing to take a shoulder X-ray. The machine is set to 300 mA, and the technologist aims for a total of 90 mAs for the exposure.What should the exposure time be in seconds to achieve 90 mAs?
0.3 sec
500
A radiograph is taken at a distance of 30 inches from the X-ray source with an intensity of 25 mR. If the distance is increased to 90 inches, what will be the new intensity?
2.78 mR
500
How many milliseconds are in 1 second?
1000