Imaging Flashcards
1
Q
Color of fat on CT and MRI
A
FAT BLACK CT, will be white or gray on MRI
2
Q
T1 and T2 relaxation times in MRI
A
T1: good resolution (Jan 1, New Year’s resolution)
fat is bright white
bone cortex black, marrow white
T2: good contrast (pathology)
fat gray/black
cortex black, marrow gray/black
“T2 –> H2O is bright”
3
Q
Barium
A
Good contrast, contraindication: bowel perf (barium toxicity)
4
Q
Iodine
A
nephrotoxic, not as good contrast
5
Q
Patient exposure
A
US = MRI < CXR < CT
6
Q
MRI Contrast Agent
A
Gadolinium
