TEST BANK 2026/2027 AND A COMPREHENSIVE STUDY GUIDE
COMPLETE ACCURATE EXAM ACTUAL QUESTIONS WITH WELL
ELABORATED ANSWERS (100% CORRECT VERIFIED SOLUTIONS)
LATEST UPDATED VERSION 2026 |GUARANTEED PASS A+
|APPROVED EXAM
In fluoroscopic procedures where the observation of actual motion is not
necessary, which of the following could be used in conjunction with a fluoroscopic
unit to significantly reduce patient exposure?
a. Mirror optic system
b. Video disc recorder
c. TV camera
d. Cine camera
answer- b. Video disc recorder
All of the following except one are acceptable ways to decrease operator exposure:
a. Use lowest mA and highest kept practicable
b. Keep patient-fluorescein distance to a maximum
c. Restrict x-ray beam "on time"
d. Restrict x-ray beam to smallest size
answer- b. Keep patient-fluorescein distance to a maximum
,The type of x-ray tube housing for a fluoroscopic tube should be of a diagnostic
type. Which of the following statements best describes a diagnostic tube housing?
a. Contains 2.5 mm aluminum added filtration
b. So constructed that the entire cross-section of the useful beam is attenuated by a
primary barrier
c. So constructed that the leakage radiation cannot exceed 100 m/R per hour at a
distance of one meter
d. Shall be equipped with automatic collimators which restrict the useful beam to
the size of the fluorescein
answer- c. So constructed that the leakage radiation cannot exceed 100 m/R per
hour at a distance of one meter
A certain x-ray tube, at some given kilovolt peak (kept), delivers 4 mill roentgens
(mar) per one milliamp ere-second (mass) at 40 inches’ distance. At 80 inches’
distance, the radiation output form the x-ray tube in mar/mass) will be:
a. 16
b. 8
c. 2
d. 1
answer- d. 1
D1 = 40", I1 = 4mR/mass; D2 = 80", I2 = x
4(40^2) = x (80^2)
4 (1600)/6400 = x
1=x
,An image intensified fluoroscopy system is switched to the magnification mode so
that the center 6 inches of the input screen is now visualized over the entire 9-inch
diameter input screen. Under automatic brightness control with constant kilovolt
age peak (kept), what relative increases in exposure rate has occurred?
a. 2.25
b. 1.50
c. 0.66
d. 0
answer- a. 2.25
81/36 = 2.25
If 3 grams of tissue absorb 300 ergs of x-rays what is the dose?
a. 1 rad
b. 3 reds
c. 4 reds
d. 300 reds
a. 1 rad
rationale: 1 g = 100 erg; 100 ergs = 1 rad
, Which of the following describe the correct usage of the "boost" position or high
level control in fluoroscopy?
I. Increases the tube current and potential above normal limits
ii. Automatically raises the level of the table
iii. Continuous manual activation is required
iv. Continuous audible signal is required
a. II only
b. I, III and IV only
c. I and II only
d. III and IV only
answer- b. I, III and IV only
Fluoroscopic equipment manufactured after August 1, 1974, equipped with
automatic exposure controls (AEC) shall not be operable at any combination of
tube potential and current which will result in an exposure rate at the point where
the useful x-ray beam enters the patient in excess of:
a. 1.0 roentgen/minute
b. 2.0 roentgen/minute
c. 5.0 roentgen/minute
d. 10.0 roentgen/minute
answer- d. 10.0 roentgen/minute