Perfusion interpretation Flashcards
1
Q
Normal appearance
A
- Homogenous distribution
- Normal wall motion
2
Q
Abnormal appearance
A
Defects evident on at least 2 slices
Reversible defects
Nonreversible defects
Abnormal gating
3
Q
fixed defect
A
Present on stress & rest/delayed imaging
Indicates infarction/scar tissue
4
Q
xMised defect
A
Partially reversible defect
Quantitative i.e. 25% reversibility
5
Q
Reversible defect
A
Defect on stress, normal rest
Indicates transient ischemia
6
Q
Reverse defect
A
Stress: normal or show defect
Rest/delayed: more severe defect
Thrombolytic therapy or percutaneous coronary angioplasty
Significance controversial
7
Q
How are defects assessed
A
Size
Severity
Location
Degree of Reversibility
8
Q
Abnormal increased uptake
A
Lung Activity
201Tl - lung : heart ratio > .5
RV Activity
Transient ischemic dilatation
