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Abstract #0552

Downloadable Probabilistic Map of the Territorial Distribution of the Left – Middle Cerebral Artery Derived from TOF-MRA

Samantha Cote1, Jean-Francois Lepage2, and Kevin Whittingstall3
1Médecine Nucléaire et Radiobiologie, Université de Sherbrooke, Sherbrooke, QC, Canada, 2Pédiatrie, Université de Sherbrooke, Sherbrooke, QC, Canada, 3Radiologie Diagnostique, Université de Sherbrooke, Sherbrooke, QC, Canada

Standardized artery territorial distributions (ATD) are derived from variable post-mortem ATD yet assume a homogenous distribution. We developed a downloadable probabilistic territorial distribution of the left-MCA derived from Time-of-Flight Magnetic-Resonance-Angiography that can be used with other MRI modalities. We examined the probability of the arterial territory in Broca’s and Wernicke’s area and found it to be almost 3 times higher in Broca area than Wernicke’s area; however, both are traditionally believed to be supplied by the left-MCA. Combining the variability of arterial territories with functionally defined regions of interest can advance our knowledge of the consequences of cerebrovascular incidents.

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