Akash P Kansagra1, Eric C Wong. 1. School of Medicine, University of California, San Diego, California, USA. akansagra@ucsd.edu
Abstract
PURPOSE: To demonstrate the use of a noninvasive arterial spin labeling (ASL) MRI technique and evaluate vertebral artery (VA) territories in the brain. MATERIALS AND METHODS: Vessel-encoded ASL was used to determine the territories of the left and right VAs in five healthy subjects. Territory maps were analyzed quantitatively by comparing the fractional contributions of the left and right VAs in selected regions of interest within the brain. RESULTS: VA territory maps demonstrated a complicated pattern of perfusion to the posterior aspect of the brain, but were consistent with the posterior cerebral and cerebellar artery distributions. Cerebellar perfusion was predominantly ipsilateral (P<0.01). The total left and right VA contributions were unequal (P<0.01), and there was relatively little mixing in the vertebrobasilar system. CONCLUSION: Vessel-encoded ASL can reveal individual VA territories in the brain. In a small sample of healthy volunteers the VAs appeared to contribute unequally, provide predominantly ipsilateral supply to the cerebellum, and undergo minimal mixing in the basilar artery. Copyright (c) 2008 Wiley-Liss, Inc.
PURPOSE: To demonstrate the use of a noninvasive arterial spin labeling (ASL) MRI technique and evaluate vertebral artery (VA) territories in the brain. MATERIALS AND METHODS: Vessel-encoded ASL was used to determine the territories of the left and right VAs in five healthy subjects. Territory maps were analyzed quantitatively by comparing the fractional contributions of the left and right VAs in selected regions of interest within the brain. RESULTS: VA territory maps demonstrated a complicated pattern of perfusion to the posterior aspect of the brain, but were consistent with the posterior cerebral and cerebellar artery distributions. Cerebellar perfusion was predominantly ipsilateral (P<0.01). The total left and right VA contributions were unequal (P<0.01), and there was relatively little mixing in the vertebrobasilar system. CONCLUSION: Vessel-encoded ASL can reveal individual VA territories in the brain. In a small sample of healthy volunteers the VAs appeared to contribute unequally, provide predominantly ipsilateral supply to the cerebellum, and undergo minimal mixing in the basilar artery. Copyright (c) 2008 Wiley-Liss, Inc.
Authors: Tiffany C Ho; Jing Wu; David D Shin; Thomas T Liu; Susan F Tapert; Guang Yang; Colm G Connolly; Guido K W Frank; Jeffrey E Max; Owen Wolkowitz; Stuart Eisendrath; Fumiko Hoeft; Dipavo Banerjee; Korey Hood; Robert L Hendren; Martin P Paulus; Alan N Simmons; Tony T Yang Journal: J Am Acad Child Adolesc Psychiatry Date: 2013-07-25 Impact factor: 8.829
Authors: Thomas W Okell; Peter Schmitt; Xiaoming Bi; Michael A Chappell; Rob H N Tijssen; Fintan Sheerin; Karla L Miller; Peter Jezzard Journal: NMR Biomed Date: 2016-04-13 Impact factor: 4.044