Angiography of pulmonary emboli: digital studies and balloon-occlusion cineangiography.
The value of digital pulmonary arteriography and balloon-occlusion cineangiography was investigated in 118 selected patients. In one series of 40 patients, digital pulmonary arteriography correctly identified pulmonary emboli in 20 (75%) of 26 positive examinations when interpretation was confined to the first three divisions of the pulmonary artery. In a second series of 78 patients with peripheral radionuclide perfusion scan defects, 40 of whom had pulmonary emboli, adjunctive balloon-occlusion cineangiography demonstrated emboli in four patients not seen on standard selective catheter pulmonary magnification studies with cut films. These two procedures (i.e., digital pulmonary arteriography and balloon-occlusion cineangiography) are important adjuncts to radionuclide perfusion scans and selective catheter pulmonary arteriography in the evaluation of patients with pulmonary emboli.
D000792:Angiography / Q000379:methods*; D002404:Catheterization; D002932:Cineangiography / Q000379:methods*; D006801:Humans; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013382:Subtraction Technique; D014692:Ventilation-Perfusion Ratio