[Dynamic study of the coronary vascular bed by selective coronary scanning using hyperaemia].
Advantage may be taken of the hyperaemic response to the iodine contained in the contrast medium injected during coronary angiography to assess the functional value of the coronary tree using radioactive microspheres. This series comprises 73 selective coronary scans performed in the resting state (113 m In marked microspheres) and during the hyperaemic phase (99 m TC marked microspheres) in 70 patients. A positive hyperaemic response distal to severe truncular stenosis indicates a good distal arteriolar bed and collateral circulation for aorto-coronary bypass grafting. After aorto-coronary bypass (23 cases), the hyperaemic response gives an indication of the functional value of the revascularised myocardium. In 71% cases, the results correlate well with the measurement of the peroperative blood flow through the graft. It is usually positive when the bypass graft is implanted with good distal arterial run off.
D000328:Adult; D000368:Aged; D003097:Collateral Circulation; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000503:physiopathology*; D003331:Coronary Vessels / Q000000981:diagnostic imaging / Q000503:physiopathology*; D005260:Female; D006801:Humans; D006940:Hyperemia / Q000139:chemically induced; D007457:Iodine Radioisotopes; D008297:Male; D008875:Middle Aged; D009204:Myocardial Revascularization; D011877:Radionuclide Imaging; D013667:Technetium
D007457:Iodine Radioisotopes; D013667:Technetium
Exploration dynamique du lit artériolaire coronaire par scintigraphie coronarienne sélective sous hyperhémie.