NMTCB PET Practice Questions (LATEST ) | QUESTIONS & VERIFIED ANSWERS WITH FULL RATIONALES | A+ GRADE GUARANTEED

NMTCB PET Practice Questions
1. Presence of the non-collinearity of the annihilation photons and the finitepositron range
are inherent properties of positron emission tomography re- sulting in:
(A) Attenuation artifacts
(B) Positional inaccuracy
(C) Scatter
(D) Truncation: (B) Positional inaccuracy
2. The cathode filament of the X-ray tube:
(A) Emits electrons
(B) Emits X-ray
(C) Attracts electrons
(D) Detects X-ray: (A) Emits electrons
3. The earliest disposal of the decay-in-storage waste material is permitted ifit
was held for a minimum 10 half-lives and has decayed to less than:
(A) Background level
(B) Two times background levels
(C) 0.05 mR/h
(D) 0.5 mR/h: (B) Two times background levels
4. The recommended time interval for PET imaging after biopsy is:
(A) 1 week
(B) 2-4 weeks
(C) 2-6 months
(D) > 6 months: (A) 1 week
5. The example of the anatomic diagnostic modality employed in the work-upof
the patient with seizures is:
(A) Electroencephalography (EEG)
(B) Positron emission tomography (PET)
(C) Magnetic resonance imaging (MRI)
(D) Single-photon emission computed tomography (SPECT): (C) Magnetic res-onance
imaging (MRI)

,6. Standardized uptake value (SUV) measurements are performed on:
(A) Non-attenuation-corrected (NAC) images only
(B) Attenuation-corrected (AC) images only
(C) Non-attenuation-corrected (NAC) and attenuation-corrected (AC) images
(D) Attenuation-corrected (AC) or non-attenuation-corrected (NAC) images: -
(B) Attenuation-corrected (AC) images only
7. False-negative PET scans in lung cancer imaging occur predominantlybecause
of:
(A) Lesions that are too big to be evaluated by PET
(B) Lesions that are too superficial to be evaluated by PET
(C) Lesions that are too small to be evaluated by PET
(D) Lesions that are too deep to be evaluated by PET: C) Lesions that are toosmall to be
evaluated by PET
8. The principal measure of reducing radiation exposure to patients duringPET/
CT examination is reduce the:
(A) Peak kilovoltage
(B) Product of beam current and exposure time
(C) Beam current
(D) Product of beam current and peak kilovoltage: (B) Product of beam currentand exposure
time
9. Lung activity observed on F-18 FDG-PET/CT imaging:
(A) Is more prominent on attenuation-corrected images
(B) Increases from the posterior to the anterior segments
(C) Increases from the inferior to the superior segments
(D) Is more prominent on non-attenuation-corrected images: (D) Is more promi-nent on non-
attenuation-corrected images
10. Which of the following methods, in clinical practice, is the most commonlyapplied to
determine SUV?
(A) Isocontour ROIs
(B) Manual ROIs
(C) SUV max

, (D) SUV peak: (C) SUV max
11. If the pretest probability of disease is high and then a negative PET is morelikely to be:
(A) False negative
(B) False positive


(C) True negative
(D) True positive: (A) False negative
12. Multiple focal cortical and subcortical defects on FDG study indicate diag-nosis of:
(A) Vascular dementia
(B) Alzheimer's disease
(C) Parkinson's disease
(D) Radiation necrosis: (A) Vascular dementia


13. Quantitative bias that refers to the underestimation of counts density whichdiffers from
what they should be is called:
(A) Motion artifact
(B) Partial-volume effect
(C) Recovery coef fi cient
(D) Truncation artifact: (B) Partial-volume effect
14. Truncation artifacts in PET/CT imaging are produced by:
(A) Contrast medium
(B) Difference in size of FOV between PET and the CT
(C) Difference in scanning time between PET and the CT
(D) Beds overlapping: (B) Difference in size of FOV between PET and the CT
15. Property of PET detectors that allows them faster timing signals for coinci-dence
detection and to work at high count rates is called:
(A) The stopping power
(B) Energy resolution
(C) The decay constant
(D) The light output: (C) The decay constant
16. The first PET radiopharmaceutical to receive the U.S. Food and DrugAdministration