First-pass left ventricular ejection fraction with 95mAu on a 1/4 in. crystal gamma camera.

First-pass left ventricular ejection fraction was determined in 21 patients using 195mAu. The technical aspects of the application are discussed with particular reference to the thin crystal (1/4 in.) gamma camera. The use of diverse catheter types and combinations were also investigated so that optimal administration of the radionuclide could be achieved.