What are the two primary purposes of a low-dose CT-Scan in a SPECT-CT system?
Coregistration
Attenuation Correction
How is nuclear medicine imaging different than other radiologic tests?
The main difference between nuclear medicine imaging and other radiologic tests is that nuclear medicine imaging evaluates how organs function, whereas other imaging methods assess anatomy (how the organs look).
_____ of the nuclear medicine image with CT improves lesion localization.
Coregistration
PET/CT systems normally offer a ____ gantry aperture.
70-cm
Activity (18F) in PET is typically ____ and is administered ____ before imaging is to commence.
555 MBq (15 mCi)
60 to 90 minutes
Low-dose CT images can also be used as a ____ to define the anatomic region for PET scanning.
scout view
____ CT scanners are adequate for most PET/CT applications.
Sixteen-slice
_____ scanners are targeted for cardiac applications.
Sixty-four-slice
Spiral CT scanning from the eyes to the upper thigh can be performed in how many seconds?
15 to 20s
Axial coverage in PET is____
15 cm to 22 cm
Typical PET scans take _____ at each detector position.
2 to 3 minutes
Current clinical PET scans use about ___ detector positions to cover the body.
five
Up to ____ positions would be required for head to toe PET imaging of melanoma patients.
11
PET/CT is primarily used for ____
staging of malignant disease to monitor patient response to therapy
