PRACTICE EXAM 2026/2027 COMPLETE ACCURATE EXAM REAL
QUESTIONS AND CORRECT VERIFIED ANSWERS WITH DETALED
RATIONALES (100% CORRECT VERIFIED ANSWERS) CURRENTLY
UPDATED VERSION 2026 EDITION |GUARANTEED PASS A+ |FULL
REVISED EXAM
A dose calibrator is used to assay the amount of radioactivity in a
sample before it is administered to a patient. All radiation leaving
the source placed in the dose calibrator is detected EXCEPT
radiation directed toward:
A. The hole at the top of the chamber
B. The bottom of the chamber
C. The upper part of the chamber
D. The bottom half of the chamber
A. The hole at the top of the chamber
Since there is no radiation detecting material above the source i.e
the hole in the top of the chamber, the photons emitted through the
top do not contribute to the dose reading.
The cardiac measurement defined as the blood volume pumped out
by the ventricle per contraction is called:
A. Cardiac output
B. Ejection fraction
C. Systolic
D. Stroke volume
D. Stroke volume
Stroke volume: amount of blood pumped out by ventricle per
contraction.
,A common antecubital vein used for intravenous administration of a
radiopharmaceutical is the:
A. Cephalic
B. Ulnar
C. Radial
D. Brachial
A. Cephalic
A variety of antecubital veins can be used for drug administration.
But the two most commonly used are the basilic and cephalic veins.
,A SPECT study is required to consist of 2 million counts. If there are
64 steps and the count rate is 65,000 cpm, how many seconds
should each stop last?
A. 13 s
B. 21 s
C. 29 s
D. 31 s
E. 48 s
C. 29 s
The first step is to determine how many counts per stop are
required:
2,000,000 total counts/64 stops= 31,250 counts/stop
Next, determine how many seconds are required for each stop to
acquire 31,250 counts if the count rate is 65,000 cpm:
65,000 cpm= 1083 cps (counts per second) (divide cpm by 60
seconds)
1083 cps X ? seconds= 31,250 counts
? seconds= 31,250/1083= 29 seconds
, Which of the following scintillators commonly used in PET has the
highest light output?
A. LSO (lutetium oxyorthosilicate)
B. BaF2 (barium fluoride)
C. BGO (bismuth germinated)
D. GSO (gadolinium orthosilicate)
A. LSO (lutetium oxyorthosilicate)
LSO scintillator has the highest light output of all the listed
detectors.
A 99mTc-medronate image of the region shown would best
demonstrate which of the following structures?
I. Iliac crests II. Distal Femur III.Ischium IV. Thoracic vertebrae 10-12
A. I and II only
B. III only
C. III and IV only
D. I,II, and IV only
D. I,II, and IV only
The image depicts a posterior view of the lower lumbar spine, the
pelvis, and the proximal femurs. The iliac crests would be
demonstrated on an anterior view of the pelvis. The distal femurs
and the 10th through 12th thoracic vertebrae are inferior and
superior, respectively, to the structures shown in the image.