Artery of Percheron Infarction-MRI
66 year old Known Hypertensive with Altered Sensorium shows symmetrical bilateral posteromedial thalami and mid brain restricted diffusion foci with reduced ADC values.
Teaching Points by Dr MGK Murthy :
Thalami and mid brain are supplied by many perforating arteries (both anterior and posterior circulation) in a complex manner. The anterior circulation supplies the anteroinferior aspects of thalami and mid brain. Posterior circulation supplies the medial aspects of thalami and mid brain via P1 and P2 segments of PCAs.
Artery of Percheron is a solitary arterial trunk that arises from one of the PCAs and supplies both paramedian thalami and rostral mid brain. Occlusion of this will lead to bilateral posteromedial thalamic and rostral mid brain infarctions. Differential Diagnosis should include top of the basilar artery syndrome, which can be identified by the infarctions in the superior cerebellar arterial territories as well.
Artery of Percheron Infarction-MRI
Reviewed by Sumer Sethi
on
Saturday, September 01, 2012
Rating:
Reviewed by Sumer Sethi
on
Saturday, September 01, 2012
Rating:
Sumer Sethi
Unique blend of academic excellence and entrepreneurship, heading leading firms in India- Teleradiology Providers, pioneering company providing teleradiology services and DAMS (Delhi Academy of Medical Sciences) Premier test preparation institute in India for MD/MS/MCI preparation. He has also been an invited faculty member at various conferences, including Teleradiology in IRIA 2008 and 2011, Hospital Build Middle East, Congress of the Brain Tumor Radiology in Neuro-oncology Society. Dr. Sethi is Editor-in-Chief of Internet Journal of Radiology. He has a keen interest in Web 2.0 technologies and in maintaining his famous radiology blog, which has been featured in multiple international journals.
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