Radioisotopic angiocardiography: findings in congenital heart disease.

No.of patients inspection at the time of open heart surgery in many of the patients. Six of the group with congenital heart disease were studied by radioisotopic angiocardiog raphy both preand postoperatively. The interval between operation and the postoperative study varied from 3 days to 3 months. The scintillation camera with our accessory van able time-lapse recording, display, and scintipho tography system (VTV) has been described pre viously (1 ) . The system allows for the recording, display, replay, and photography of dynamic events for selected time periods and also permits the en hancement, suppression, or deletion of any portion of the record. Adults were usually studied while seated. The positioning technique for performing studies in the anterior and modified left anterior oblique views were those reported by Math and Kniss (4) . The intravenous bolus-injection technique (4) recently has been modffied to advantage by em ploying a specially prepared two-compartment sy ninge* which upon pushing the plunger fully forward results in the injection first of the radioactive bolus, followed immediately thereafter by a saline wash and pusher bolus of up to 2 ml. The radiopharma ceutical employed was oomTc@pertechnetate,given in