[Comparison of T1201 stress scintigraphy and rest and stress ventriculography with respect to the degree of stenosis and collateral findings].
The influence of coronary obstructions and collaterals on the results of T1 201 myocardial scans and regional wall motion on ventriculography at rest and after pacing was examined with digital observer-independent methods, whereby criteria for positive and negative findings were defined in advance. The results indicate the high accuracy of 201-thallium scans in the detection of coronary artery disease in symptomatic single vessel disease, when the lesions obstruct greater than 60% of the vascular diameter. Cineventriculography at rest is inefficient as a test for this purpose. Ventriculography after pacing produced regional dysfunction in most of the patients and was comparable in its accuracy to T1 201 scans. A correlation of severity of stenoses and regional wall motion was not possible in the presented population. Collateral function is able to provide O2 supplies for normal myocardial function at rest and becomes insufficient during exercise and pacing. These results of T1201 stress scintigraphy correspond with results of stress ventriculography.
D000328:Adult; D000787:Angina Pectoris / Q000175:diagnosis; D003097:Collateral Circulation; D003327:Coronary Disease / Q000175:diagnosis*; D005260:Female; D006321:Heart / Q000000981:diagnostic imaging*; D006352:Heart Ventricles / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis; D005082:Physical Exertion; D011859:Radiography; D011868:Radioisotopes; D011877:Radionuclide Imaging; D012146:Rest; D013793:Thallium
D011868:Radioisotopes; D013793:Thallium
Vergleich von T1 201 Belastungsszintigraphie, Ruhe- und Belastungsventrikulographie unter Berücksichtigung von Stenosegrad und Kollateralbefund.