Pedroza A, Dujovny M, Cabezudo-Artero J, Umansky F, Berman S K, Diaz F G, Ausman J I, Mirchandani G
Acta Neurochir (Wien). 1987;86(1-2):50-5. doi: 10.1007/BF01419504.
The premamillary artery was studied in 50 unfixed human brain hemispheres (51 vessels were found) which were injected with polyester resin and dissected under the operating microscope. In one hemisphere there was duplication of the premamillary artery. There were premamillary arteries arising from the posterior communicating artery (PCoA) in 49 cases and from the posterior cerebral artery in the remaining two. The arteries originated from the superior and lateral surfaces of the PCoA and coursed superiorly, laterally, and posteriorly to enter a triangular perforated space limited by the mamillary body and tuber cinereum medially, the optic tract anterolaterally, and the cerebral peduncle posterolaterally. This space is called the paramedian perforated substance. The premamillary artery had an outer diameter of 0.6 +/- 0.2 mm on the right side and 0.6 +/- 0.1 mm on the left. The length of the premamillary artery was 12.0 +/- 2.0 mm on the right side and 12.7 +/- 1.9 mm on the left. Sixty-three percent of the premamillary arteries gave off branches that supplied the cerebral peduncles, optic tract, and paramedian perforated space. The clinical importance of these anatomical data in the symptomatology and management of vascular and neoplastic diseases in and around the posterior circle of Willis is discussed.
在50个未固定的人脑半球（共发现51条血管）中对乳头前动脉进行了研究，这些半球用聚酯树脂灌注后在手术显微镜下进行解剖。在一个半球中，乳头前动脉存在重复。49例乳头前动脉起自后交通动脉（PCoA），其余2例起自大脑后动脉。这些动脉起自PCoA的上表面和外侧表面，向上、向外和向后走行，进入一个三角形的穿通间隙，该间隙内侧由乳头体和灰结节界定，前外侧由视束界定，后外侧由大脑脚界定。这个间隙称为内侧穿通质。右侧乳头前动脉的外径为0.6±0.2mm，左侧为0.6±0.1mm。右侧乳头前动脉的长度为12.0±2.0mm，左侧为12.7±1.9mm。63%的乳头前动脉发出分支，供应大脑脚、视束和内侧穿通间隙。文中讨论了这些解剖学数据在 Willis 环后部及其周围血管性和肿瘤性疾病的症状学及治疗中的临床意义。
