ARRT MRI EXAM, FINAL EXAM, PRACTICE EXAM AND STUDY GUIDE LATEST ACTUAL EXAM 220 QUESTIONS AND CORRECT ANSWERS) |ALREADY GRADED A+

ARRT MRI EXAM, FINAL EXAM, PRACTICE EXAM
AND STUDY GUIDE LATEST 2024-2025 ACTUAL EXAM
220 QUESTIONS AND CORRECT ANSWERS) |ALREADY
GRADED A+
Standards that stat the air exposure from fluoroscopic equipment shall not exceed how many
Coulomb's? - answer-2.58XCoulomb/Kg



Which of the following will reduce the radiation to the patient if done by the radiologist during a
fluoroscopic study? - answer-Intermittent exposure



Which of the following has the greatest effect on the amount of radiation exposure to the patient? -
answer-Size of the exposure


The field positioning light and the actual radiation field cannot vary by more than what percentage of
SID? - answer-+/- 2%


Automatic exposure rate control (AERC) is designed to compensate for change in which of the following?
- answer-patient positioning



Which of the following are advantageous of using dynamic flat-panel detector for digital fluoroscopy
component to image-intensifying fluoroscopy? - answer-1. Rectangular image.

2. Post- processing of image.

3. Better contrast resolution.



Which of the following publications contains the regulations for using X-rays up to 50 Mev? -
answerNCRP #102


Which of the following will need gonadal shielding? - answer-Unilateral hip

,How fast can dynamic flat-panel detectors, used in digital fluoroscopy, captures and displays an image? -
answer-30-50 milliseconds


Which of the following refers to the x-ray beam after it has passed through the beam restricting devices?
- answer-primary beam



Which of the following filters would produce an x-ray beam with the highest average photon energy? -
answer-4 mm/Al, the higher the mm/Al the more low energy photons will be filtered out.


The dose rate at the table cannot exceed how many milliGray per minute? - answer-100
mGray/Minute



Which of the following is considered the best at reducing patient exposure? - answer-Extension
cylinder



Which of the following examinations were NOT allow for male gonadal shielding? - answer-Voiding
cystourethrogram



The source-to-skin distance in mobile fluoroscopy must NOT be less than how many inches? - answer-
12 inches


The source-to-skin distance in stationary fluoroscopy should not be less than how many inches? -
answer-15 inches


To prevent leakage radiation from exposing the patient, an x-ray must have how much protective lead? -
answer-1.5 mm


Which of the following is a mean of expressing the dose a patient has received from a radiographic
examination? - answer-skin dose, usage dose, whole body

, Which of the following will produce the highest contrast? - answer-100 mAs 70 kVp , 8:1 (the lowest
kVp and the highest grid ratio wil produce the highest contrast)



Which of the following will have the greatest effect on radiographic contrast? - answer-Reducing
scatter radiation



which of the following directly influences radiographic contrast? - answer-Grid ratio



After the values of interest have been determined from the histogram, which of the following is used to
readjust those numbers to produce the proper contrast? - answer-Look up tables.



When an object is placed halfway between the tube and the image receptor, the image will be how many
times larger? - answer-2X



Look-up tables controls? - answer-Contrast



Which of the following focal spot sizes should be used when doing macro radiography? - answer-.3
mm



How could a knee taken at 40 mAs, 70Kvp, and a 400 speed film-screen system be properly converted for
CR? - answer-8 mAs 70 kVp



Which of the following would increase the contrast to noise ratio? - answer-Increase x-ray intensity


The ratio of SID to SOD represents which of the following? - answer-Magnification ratio



Which of the following would be used to minimize size distortion? - answer-Shortest possible OID, and
longest SID