Abstract
Tc99m sequential scintigraphy of the brain detected all of 17 cases of cerebral arteriovenous malformations and racemose angiomas of the scalp. The focus was best shown in the earliest phase of studies and particularly in the first stage films. The detection rate decreased with the passage of time after administration of Tc99m.The data-store/playback accessory further permits the analysis of circulatory dynamics of the brain. Transit time and local cerebral blood flow are determined, in the multiple regions of interest, for various size and location. Size of the arteriovenous shunt is estimated by I131 macroaggregated albumin brain-lung scintigraphy.Although the individual techniques described are not new, combined use of these 3 studies is easy to perform with the gamma-ray scintillation camera and data processing equipment. These physiologic data seem to be of value in the neuroradiologic examination of cerebral arteriovenous fistulas.
Published Version
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