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Allergic reaction that begins within seconds/minutes of contrast media administration and rapidly progresses to cause airway obstruction, skin, and intestinal irritation, and altered heart rhythms is called __________

PET images distinguished by “hot skin” and the manifestation of the lungs with high tracer uptake and the low tracer concentrations in the mediastinum are __________.

When viewing a PET image, the “rim sign” is a clue the image has not been __________.

Which of the following radiopharmaceuticals has been developed as the PET tracer to measure myocardial oxygen utilization?

CT and PET scans demonstrate different aspects of disease indicating regions with ___________.

Two photons arising from the same annihilation event and detected by two detectors within the coincidence time-window are __________.

A substance used to enhance the visibility of a structure or fluid in the body for medical imaging  is called _________.

Which of the following is TRUE for PET/MRI in pediatric patients?

Truncation is a source of streaking artifacts at the edge of the CT image. The presence of streaking artifacts:

A positron has the same mass as an electron and an electric charge of __________.