The employment of gamma-ray scintillation camera with the use of short-lived radioisotopic pharmaceuticals, sucu.as 2"Tc sodium pertechnetate, have enabled us to perform RI (radioisotopic) angiocardiography. -Although conventional cardiac catheterization or angiocardiography using contrast media have been an important diagnostic tool, they may carry some risks or serious complications.
The author investigated ;on RI angiocardiography in twelve normal and twenty five patients with cardiovascuia r diseases´ in an effort to evaluate its diagnostic value.
The results obtained with this, study are as follows;
1. In normal -sub*e is the scintillation camera transit time of arm-to-right heart was found to be 2. 1±0.67. second , right to-lung 1.5±0.40 seconds and lung-to-left heart 3.5±0.86 seconds.
2. Transformation o despla~ent of *the heart and the great vessel are easily discriminated by RI´ angiocardiography: ? ? th they`-´ with tricus id atresia and tetralo of Fallot ventricular se tal
V 0,4
defects, are?well,reco y_uueen angiocardiography.
3. It is also ~1 and extent of obstruction, and estimatiing the postop
erative course both´ia -´~" penor vena cava syndrome and pulmonary stenosis.
4. Pericarditis with oa : nosed by RI angiocardiogram showing characteristic "dead
space" between in . pulmonary; radioactivity.
5. It was found at W a cy, of . this study was 78. 4%.
It is concluded that `above obtained are useful and accurate enough for the diagnostic screening methode for clinical ? p~ active.
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