Use of ^99mTc-Human Serum Albumin for Cardiac and Great Vessels Pool Scannings

Abstract

Blood pool scintigrams of heart and major vessels were performed in 22 cases using^99mTc-HSA and a scintillation camera. In a case of idiopathic pericarditis, an enlargement of zone of decreased activity between heart and the lungs and/or liver was observed.
In a case of congestive heart failures with X-ray findings of cardiac enlargement, blood pool scintigrams were useful for the examination of pericardial effusion. In a case of aortic aneurysm and ventricular aneurysm, the lesions were clearly demonstrated. It was useful for the differential diagnosis between aneurysms and tumors. Using ECG-gated scintigram, the shape of cardiac chambers in systolic and diastolic phases were obtained. From these observations, the existence of ventricular aneurysms in cases of myocardial infarction were easily detected. In conclusion, blood pool scintigrams with^99mTc-HSA were non-invasive and easy to perform. It was demonstrated that this technique were useful for the differential diagnosis of cardiomegalies or major blood vessel diseases.