Abstract
Development of a perfusion defect on the 201Tl image from exercise to redistribution is referred to as reverse redistribution, a finding which has been previously associated with several conditions. We describe here two cases in which the reverse-redistribution phenomenon, observed in a routine stress-redistribution thallium-201 scan performed because of chest pain, was considered to be artifactual. Both patients subsequently developed a myocardial infarction in the areas showing the delayed perfusion defect. The potential clinical significance of the reverse-redistribution phenomenon in these two cases is discussed. When observed in patients with typical anginal pain, the reverse redistribution pattern should be considered a potential marker of tissue at risk in a region with previous, otherwise undetected, subendocardial infarction. In such patients the need for coronary angiography should be carefully considered.
Original language | English |
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Pages (from-to) | 514-517 |
Number of pages | 4 |
Journal | Journal of nuclear biology and medicine (Turin, Italy : 1991) |
Volume | 38 |
Issue number | 3 |
Publication status | Published - 1994 |
Keywords
- Angina pectoris
- Myocardial infarction
- Reverse redistribution
- Thallium-201
- Viability
ASJC Scopus subject areas
- Medicine(all)
- Radiology Nuclear Medicine and imaging