Underestimation of residual ischemia by 201-thallium scintigraphy after myocardial infarction.
Pre- and post-CABG perfusion scintigraphic findings are reported in a patient with residual ischemia after anterior myocardial infarction. The preoperative 201Tl scan showed incomplete tracer redistribution and a relevant area of persistent irreversible defect, suggestive of a large scar. After CABG, the presence of a virtually normal early thallium distribution demonstrated previous underestimation of the viable perinecrotic tissue. A persistent perfusion defect, even if associated with wall motion abnormality, does not necessarily imply the absence of residual viable tissue.
Galli
M
M
Division of Cardiology, Clinica del Lavoro Foundation, Veruno, Italy.
Bencivelli
W
W
Pardo
N F
NF
Tavazzi
L
L
D003326:Coronary Circulation; D004562:Electrocardiography; D006321:Heart / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000000981:diagnostic imaging* / Q000503:physiopathology; D011877:Radionuclide Imaging; D013794:Thallium Radioisotopes
D013794:Thallium Radioisotopes