Contrast media enhancement is divided into three phases.  The __________ phase occurs when two spots have less than a 10 HU difference.

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

Title 10 CFR part 19 relates to __________.

Which of the following is the preferred oral contrast agent when a bowel obstruction is suspected?

Standards for radiation protection are covered in __________.

Which of the following is used to describe axial sampling?

Match each type of PET event types with its proper definition.

Which of the following is the standard imaging modality for epilepsy?

Identify the brain lobes. 

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?