Chapter 6 Quiz Flashcards
The accuracy of the dose calibrator should be determined _______.
annually
quarterly
semiannually
daily
annually
The percent FWHM measures the _____.
-spatial resolution of the scintillation detector
-energy resolution of the scintillation detector
-linearity of the scintillation detector
-sensitivity of the scintillation detector
energy resolution of the scintillation detector
Which of the following PET scanner calibration and quality control tests matches the activity measured in the dose calibrator to the radioactivity measured in the PET scanner?
-normalization
-blank scan
-absolute activity
-energy window calibration
absolute activity
How frequently should the blank scan be performed?
annually
quarterly
daily
semiannually
daily
The CT number calibration is checked daily by using a _______.
rob source
water phantom
flood source
blank scan
water phantom
Which PET scanner calibration brings all detectors to provide the same sensitivity?
blank scan
energy window
normalization
coincidence timing
normalization
A PET/CT scan in the coronal plane demonstrates reduced intensity of FDG uptake in a uniform band above the liver. The most likely cause of this lack of uptake is ______.
-oral contrast in the gastrointestinal tract
-abscess
-breathing
-attenuating object
breathing
Daily visual review of PET scanner performance is done by reviewing ______.
-axial slices of a uniform source
-sinograms
-sagittal/coronal plane review
-machine-generated written logs and reports
sinograms
The mathematical reproducibility test of a well counter is the _____.
-chi-square test
-energy auto calibration test
-linearity test
-geometry test
chi-square test
Performance testing and licensing of CT scanners is required and conducted by _______.
-joint commission
-state/local agencies
-nuclear regulatory commission (NRC)
-national institute of standards and technology (NIST)
state/local agencies
