Vascular displacement diagnosed by cerebral radionuclide angiography.

Findings were reviewed in twelve patients who had contrast and radionuclide cerebral angiograms interpreted as showing displacement of the anterior or middle cerebral arteries on either study. The radionuclide angiogram detected 3 of 8 displacements of the anterior cerebral artery and 9 of 10 displacements of the middle cerebral artery. In two cases the radionuclide study suggested displacement of the middle cerebral artery when in fact it was occluded in one and normal in the other. Radionuclide angiographic detection of major cerebral artery displacement provides valuable interpretative data, particularly when the middle cerebral artery is involved.