Marinković S, Kovacević M, Gibo H, Milisavljević M, Bumbasirević L
Institute of Anatomy, University Medical School, Belgrade, Yugoslavia.
Surg Neurol. 1995 Nov;44(5):450-60; discussion 460-1. doi: 10.1016/0090-3019(95)00195-6.
Very little can be found in the literature concerning the variation of the irrigation area of the cerebellar arteries, as well as the characteristics of anastomoses among these vessels. The anatomical features may determine certain features of cerebellar infarcts. Consequently, we examined the irrigation area of and the anastomoses among the cerebellar arteries.
The anatomical features of the posterior inferior cerebellar artery (PICA), the anterior inferior cerebellar artery (AICA), and the superior cerebellar artery (SCA) were studied in 26 cerebella injected with india ink, while their irrigation areas and anastomoses were examined in 8 of these cerebella.
The PICA, which most often (82%) arose from the vertebral artery, was found most commonly (81.3%) to supply the largest part of the occipital surface of the cerebellar hemisphere, the caudal or caudomedial part of the tentorial surface, and the inferior vermis. The AICA, which usually (92%) arose from the basilar artery, commonly (68.8%) supplied most of the petrosal surface of the hemisphere and the flocculus. The SCA, which divided into the medial and the lateral trunks, always irrigated most of the tentorial surface of the cerebellum, the superior vermis, and the dentate nucleus. The PICA, AICA, and SCA were always interconnected by anastomoses, which ranged from 40 microns to 420 microns in diameter.
Cerebellar infarcts were documented by computed tomography (CT) or magnetic resonance imaging (MRI) examinations in 10 patients. The infarcts were located in the PICA territory (60%) or the SCA region (40%). The authors compared the obtained anatomic data to the features of the cerebellar infarcts in these patients.
关于小脑动脉供血区域的变异以及这些血管之间吻合支的特征，在文献中鲜有报道。解剖学特征可能决定小脑梗死的某些特点。因此，我们研究了小脑动脉的供血区域及其吻合情况。
对26个注入印度墨水的小脑进行研究，观察小脑后下动脉（PICA）、小脑前下动脉（AICA）和小脑上动脉（SCA）的解剖学特征，其中8个小脑同时观察其供血区域和吻合情况。
PICA大多（82%）发自椎动脉，最常见（81.3%）的是供应小脑半球枕面的大部分、小脑幕面的尾侧或尾内侧部分以及小脑蚓下部。AICA通常（92%）发自基底动脉，常见（68.8%）供应半球岩面的大部分和绒球。SCA分为内侧和外侧干，总是供应小脑幕面的大部分、小脑蚓上部和齿状核。PICA、AICA和SCA总是通过直径40微米至420微米的吻合支相互连接。
10例患者经计算机断层扫描（CT）或磁共振成像（MRI）检查证实有小脑梗死。梗死位于PICA供血区（60%）或SCA区域（40%）。作者将获得的解剖学数据与这些患者小脑梗死的特征进行了比较。
