title: Use of Tc-99m HMPAO brain SPECT to evaluate cerebral collateral circulation during Matas test.
abstract: Five patients with traumatic carotid-cavernous fistulae and two patients with internal carotid artery aneurysms inside the cavernous sinus are presented. A quantitative method was used for the evaluation of brain collateral circulation in the anterior and middle cerebral artery territories by using Tc-99m HMPAO SPECT before and during the Matas test. It affords a more reliable quantitative measurement of reduced activity than conventional carotid angiography during the Matas test. In this study, a reduction of radioactivity of less than 15% during the Matas test did not reveal any postoperative neurological deficit after a carotid artery trapping procedure. This noninvasive method seems to be useful to determine the appropriate surgical treatment.
authors.affiliation: Department of Neurosurgery and Nuclear Medicine, Chang Gung Medical College and Hospital at Kaohsiung, Taiwan, Republic of China.
authors.forename: H J
authors.initials: HJ
authors.lastname: Chen
authors.forename: H Y
authors.initials: HY
authors.lastname: Chen
mesh_terms: D000328:Adult; D001164:Arteriovenous Fistula / Q000000981:diagnostic imaging / Q000209:etiology; D020212:Carotid Artery Injuries; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging; D002426:Cavernous Sinus / Q000000981:diagnostic imaging / Q000293:injuries; D002533:Cerebral Angiography; D002560:Cerebrovascular Circulation; D003097:Collateral Circulation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015609:Organotechnetium Compounds; D010091:Oximes; D019690:Technetium Tc 99m Exametazime; D015899:Tomography, Emission-Computed, Single-Photon
chemical_list: D015609:Organotechnetium Compounds; D010091:Oximes; D019690:Technetium Tc 99m Exametazime