Radiology, Vol 135, 439-444, Copyright © 1980 by Radiological Society of North America
Comparison of resting intracoronary particulate imaging and stress thallium-201 studies
AJ Kolibash, TD Call, MR Tetalman, CA Bush and J Scheu
Stress thallium-201 and resting dual intracoronary particulate imaging were
evaluated in 120 patients who underwent coronary angiography. Forty of 42
patients without significant coronary disease had normal stress images and
41 had normal rest studies. Eighty-three stress perfusion defects were
identified in 61 of 78 patients with coronary artery disease. At rest, 39
of these defects were resolved or improved, whereas 44 remained unchanged.
The angiographic presence of collateral vessels and radionuclide evidence
of blood flow distribution through them could not always be correlated as
36 angiographic collateral vessels had no regional distribution flow
patterns with either method. Particulate studies demonstrated myocardial
flow distribution through 25 angiographic collateral vessels and further
identified seven collateralized areas not seen angiographically. The
resting particulate images additionally defined flow distribution patterns
in 15 instances in which the angiogram indicated two potential sources of
blood supply.
