Abstract |
Pulmonary perfusion scan with radioactive 113mIn-iron
hydroxide particle was performed in the 25 cases of
heart disease which had been diagnosed by cardiac
catheterization prior to surgery from July, 1972 to
JuIy, 1973 at the Department of Radiology and Nuclear
Medicine, Yonsei Medical College. It consists of 7
mitral stenosis, 2 mitral insufficiency, 1 aortic
insufficiency, 3 atrial septal defect, 5 ventricular
septal defect, 2 patent ductus arteriosus, 1
transposition of great vessel and 4 Tetralogy of
Fallot. Findings of pulmonary perfusion scan in
relation to hemodynamic data of cardiac catheterization
were examined. 1) Out of 10 cases of acquired valvular
heart disease, In 6 cases of stenosis and 1 case of
aortic insufficiency, radioactivity was increased at
both upper lung. This finding is noted when pulmonary
wedge or venous pressure was elevated above 22 mmHg and
arterial systolic pressure above 33 mmHg. 2) Out of 15
cases of congenital heart disease. In almost all cases
of artial septal defect and ventricular septal defect
except 2 cases, radioactivity was even at both entire
lung. In 2 cases of patent ductras arteriosus,
radioactivity was decreased especially at the left
lung. It is observed that in acyanotic congenital heart
disease, radioactivity of lung is not related with
pulmonary arterial pressure. In 3 cases af Tetralogy of
Fallot, radioactivity was even at both entire lung and
in 2 of them, extrapulmonary radioactivity of liver or
kidney which depends on size of defect and volume of
right to left shunt reversible, was noted.
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