RADT 1010 CH 7-8-9 REVIEW QUESTIONS AND ANSWERS WITH DIAGRAMS FOR EASY UNDERSTANDING GRADED A+

RADT 1010 CH 7-8-9 REVIEW QUESTIONS
AND ANSWERS WITH DIAGRAMS FOR
EASY UNDERSTANDING GRADED A+

ATTENUATION




B
The process by which a beam of x-ray photons is reduced as it passes through
matter is know as:




LU
YC
PHOTOSTIMULABLE PHOSPHOR PLATE
D
Computed radiography uses which of the following as its image receptor?
TU
ES



Milliampere-Seconds (mAs)
The factor that controls the amount of x-radiation produced by the X-ray tube is:
C
A




125 mAs [500 mAs X 0.25 s]
What mAs value would result using the 500 mA setting at .25 second?
Direct Capture DR

, Which of the following image receptor systems does NOT use light during
exposure?




130 mAs [40x = 40^2 over 72^2]




B
A radiographer is made using 40mAs at a 40-inch SID. If the image must be




LU
repeated at a 72-inch SID, what mAs value is necessary to maintain the same
exposure?
* to solve use exposure maintenance formula**

YC
mAs1/mAs2=D1^2/D2^2
Kilovoltage peak (kVp)
The 15% rule helps explain the effect of________ on exposure
D
TU
ES



water
which of the following is NOT a radiographic contrast medium?
C
A




motion
the most common cause of radiographic unsharpness is: