1966•Chieh P'ou Hsueh PaoRequires access
THE ARTERIES OF THE CORPUS STRIATUM, THALAMUS AND INTERNAL CAPSULE
S. Tseng
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Abstract
The arteries which supply the corpus striatum, thalamus and internal capsule were
studied on 40 Chinese brains by dissection under stereoscopic microscope, angiography, in-
jection with albumin-vermilion followed by clearing and corrosion method in order to ob-
serve their points of origin, positions of perforation and intracerebral courses. The fol-
lowing results were obtained.
1. Perforating arteries which arose from the anterior cerebral artery could be divided
into 2 groups. Those, which arose near the level of the anterior communicating artery,
usually one in number, consisted of 90.00±3.66% of the cases; and those, which arose
from the proximal portion of the anterior cerebral artery, usually two in number, consisted
of 83.75±4.02% of the cases.
2. Perforating arteries of the middle cerebral artery consisted of a medial and a
lateral group. The lateral perforating arteries, 1--4 in number, passed over the superficial
portion of the putamen spreading out like a fan. The medial perforating arteries were
only 1--2 in number. Both groups pierced the lenticular nuclleus and the internal cap-
sule, supplying the body of the caudate nucleus.
3. The striato-capsular arteries arose from the anterior choroidal artery (97.50±
1.75%) and only very small part of them arose from the internal carotid artery.
4. The tubero-thalamic artery: 95.00±2.44% of the cases studied, originated from
the posterior communicating artery; 2.50±1.76% from the internal carotid artery;
1.25±1.26% from the anterior choroidal artery and 1.25±1.26% from the anterior
cerebral artery.
5. The posterior cerebral artery gave off thalamoperforating arteries, thalamogeni-
culate arteries and the medial and lateral posterior choroidal arteries.
The origin, position of perforation and the intracerebal course of all arteries men-
tioned above were studied and diagramed.
6. All of the arteries supplying corpus striatum, thalamus and internal capsule of
both sides seemed to be arranged in the form of a balloon with larger lateral walls.