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It has been shown that there is a correlation between the intensity of uptake in primary brain tumors and the grade of the tumor.

All scatter correction methods have disadvantages.  Which of the following are disadvantages of model-based calculations?  Select all that apply.

Which information is stored in list mode acquisition in PET imaging?

Plaques and tangles associated with Alzheimer’s disease are present in patients with Pick’s disease.

As compared to SPECT imaging, which characteristic of the crystal becomes less important?

Adding dectector rings to a PET camera could significantly reduce imaging time.  Why don’t all PET cameras have detectors that could scan the whole patient at once?

According to 10 CFR 35.67, leak tests on sealed sources must be performed __________.

What is formed when an emitted positron joins an electron?

What type of error is created when a photon interaction takes place within the crystal rather than at the surface?

Which of the following signs should be posted if a person could receive more than 5 mrem in an hour at 30 cm? **Note: Please do not look at the signs on p. 122 in Waterstram-Rich and Gilmore (8th ed.). The information is incorrect.**