Exam 14: Positron Emission Tomographyct Petct and Single-Photon Emission Computed Tomographyct Spectct Hybrid Scanners

Please match the following descriptions as being a featured characteristic of PET/CT, SPECT/CT, or both. Answer selections may be used more than once. -Higher keV photon energies than CT

Carbon, nitrogen, and oxygen derived radioisotopes have relatively short half-lives.

SPECT does not require positron emitting radiopharmaceuticals.

If the nucleus contains too many protons, it may emit a:

Displaying two data sets from two separate modalities as a single fused image is referred to as:

The uptake period for all SPECT/CT exams is 1 hour.

An atom that has too many protons or too many neutrons or they are configured in such a way so as to render the nucleus unstable is said to be a(n):

Another approach to attenuation correction in PET is to use the data from an MRI scan that are registered to the PET data.

NaI and bismuth germinate are newer scintillating materials that have reasonably high detection efficiency.

Please match the following descriptions as being a featured characteristic of PET/CT, SPECT/CT, or both. Answer selections may be used more than once. -Rotating gamma camera system

A disadvantage of using isotopes such as ¹⁵O, ¹³N, and ¹¹C are their:

One approach to reducing scatter includes introducing __________ between detection rings.

Radioactive fluorine can be chemically substituted for a:

PET brain imaging is used for a number of indications such as evaluating dementia, localizing epileptic foci, or evaluating brain injury following head trauma.

The crystals in the construction of a positron emission tomography (PET) scanner's detectors are:

PET with FDG is a useful tool in the initial diagnosis, staging, and follow-up of lung cancer.

Clinical examples of PET imaging include each of the following except:

A modern PET scanner might contain tens of thousands of small scintillating detectors.

Please match the following descriptions as being a featured characteristic of PET/CT, SPECT/CT, or both. Answer selections may be used more than once. -Only one photon (gamma ray) is emitted

Please match the following descriptions as being a featured characteristic of PET/CT, SPECT/CT, or both. Answer selections may be used more than once. -Utilized in cardiac applications