Fig. 4From: Superficial temporal artery-to-middle cerebral artery bypass surgery for middle cerebral artery stenosis in a patient with cerebral autosomal-dominant arteriopathy with subcortical infarcts and leukoencephalopathyPreoperative SPECT revealed the localized hypoperfusion in the right posterior MCA territory (a), and decreased CVR was detected by ACZ challenge (b). Improvement of the CBF (c) and CVR (d) was identified on postoperative SPECTBack to article page