By O. Nickel (auth.), N. Schad, E. J. Andrews Jr., J. W. Fleming (eds.)

For decades, clinicians have trusted cardiac marily be classified into camps

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In case of left or right coronary preponderance minor adjustments in the correspondence between the vascular territory and the feeding vessel were necessary. Two functional images had to be positive to define the radionuclide study as positive. For each patient a matrix of findings was prepared for the resting study and another for the exercise study and stored in a computer for further evaluation. Sensitivities for every distinct functional image and for the radionuclide study as a whole at rest and peak exercise were computed.

0 0 .. . .. MTT regional mean (transit) time image (times of centre of gravity). Rest and exercise images together as well as half! half systolic images yield higher sensitivities than resting examinations alone or images covering the entire systole respectively. The highest sensitivities are obtained with ejection rate and mean time images. 5 inferoposterior wall (CX-RC), at rest and rest and exercise together. Two functional images had to show positive signs to judge the radionuclide examination as positive.

No false positives resulted by comparison with the LV ventriculogram. Other causes than coronary narrowings were responsible for these local malfunctions. 8) reports the specificities for rest and exercise studies based on false positives seen at rest and/or exercise. The rapid filling phase lasted on the average 209ms (range 200-280ms) at rest and 172ms (range 125-200 ms) at exercise examinations. During this short-lasting initial diastolic phase some paradoxical inward motion of the non-compliant ischaemic or infarcted territories was frequently observed in the image that exhibits the regions where activity or blood predominantly decreases.

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