Volume 58, Issue 1 pp. 18-30
Original Article

Tertiary microvascular territories define lacunar infarcts in the basal ganglia

Joel A. Feekes BA

Joel A. Feekes BA

The University of Iowa, Neuroscience PhD Program, University of Iowa Hospitals and Clinics, Iowa City, IA

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Shih-Wei Hsu MD

Shih-Wei Hsu MD

Department of Radiology, Interventional Neuroradiology Service, University of Iowa Hospitals and Clinics, Iowa City, IA

Section of Neuroradiology, Department of Diagnostic Radiology, Chang Gung Memorial Hospital, Kaohsiung Medical Center, Taiwan, Republic of China

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John C. Chaloupka MD, FAHA, FACA

John C. Chaloupka MD, FAHA, FACA

Department of Radiology, Interventional Neuroradiology Service, University of Iowa Hospitals and Clinics, Iowa City, IA

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Martin D. Cassell PhD

Corresponding Author

Martin D. Cassell PhD

Department of Anatomy and Cell Biology, University of Iowa, College of Medicine, Iowa City, IA

University of Iowa, Department of Anatomy and Cell Biology, 51 Newton Road, 1-500 Bowen Science Building, Iowa City, IA 52242-1109Search for more papers by this author
First published: 27 June 2005
Citations: 78

Abstract

Lacunar infarcts are commonly found in the basal ganglia, though little is known about the organization of small-scale microvascular territories that presumably subtend lacunae. We investigated microvascular territories of the lenticulostriate arteries, the recurrent artery of Heubner, the anterior choroidal artery, and striate branches of the anterior cerebral and anterior communicating arteries in perfusion-fixed human brains by simultaneous injection of fluorescent dyes and a radio-opaque substance in 5% gelatin. Territories were defined by ultraviolet illumination of dye and high-resolution mammography of radio-opaque substance. Brains were sectioned coplanar with the Talairach proportional grid system and vascular data were plotted, allowing for application to any human brain. The data suggest first that the lenticulostriate artery, recurrent artery of Heubner, and anterior choroidal artery supply distinct territories of the basal ganglia with minimal overlap and sparse anastomoses between major penetrating vessels. Individual territories are spatially consistent across brains and match the extent of major/minor infarcts. Second, branching patterns of parental, second-, and third-order vessels leading to circumscribed terminal vascular beds could account structurally for “lacunar” infarcts. Ann Neurol 2005

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