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Sensitivity of computed tomography and serial scintigraphy in cerebrovascular disease. [/sup 99m/Tc-pertechnetate]

Journal Article · · Radiology; (United States)
OSTI ID:6289934
Computed tomography and serial scintigraphy with /sup 99m/Tc-pertechnetate (radionuclide angiography and early and late static imaging) were compared in 214 patients with cerebrovascular disease. CT correctly identified 151 (95.0%) of 159 patients with completed ischemic stroke but was positive in only 11 (25%) of 44 patients with asymptomatic stenosis, transient ischemic attacks (TIA), or prolonged reversible ischemic neurological deficit (PRIND). Scintigraphy was positive in 93.1% of patients with completed stroke. CT detected 175 territories of vascular supply involved, scintigraphy 164. In patients with asymptomatic stenosis, TIA, or PRIND, scintigraphy was correct in 77.3% of cases. The combined evaluation offered a sensitivity of 97.5% in patients with completed stroke and 86.4% in those with asymptomatic stenosis, TIA, or PRIND. The rate of true-positive scintigraphic findings in patients with completed stroke did not change as the interval between ictus and study increased. In patients with intracerebral hematoma, CT was far more specific than scintigraphy. If cerebrovascular disease is suspected, radionuclide angiography should be performed first.
Research Organization:
Univ. of Munich, Germany
OSTI ID:
6289934
Journal Information:
Radiology; (United States), Journal Name: Radiology; (United States) Vol. 131:2; ISSN RADLA
Country of Publication:
United States
Language:
English