Serial Single-photon Emission Computed Tomographic and Transcranial Doppler Measurements for Evaluation of Vasospasm after Aneurysmal Subarachnoid Hemorrhage

Abstract

Serial SPECT measurements after aneurysmal SAH demonstrate that regional changes in cerebral perfusion follow a nonlinear time trend, and repeated measurements are necessary. This observation, as well as the low feasibility of SPECT, restricts the clinical value of such measurements.