Koehler P R, Haughton V M, Daniels D L, Williams A L, Yetkin Z, Charles H C, Shutts D
AJNR Am J Neuroradiol. 1985 May-Jun;6(3):425-7.
The dimensions of the brainstem were measured on magnetic resonance (MR) images to provide criteria for detecting brainstem enlargement. Twenty-eight normal adult subjects had MR imaging with sagittal partial-saturation and spin-echo sequences. Four patients with brainstem gliomas and three with cerebellar atrophy were also studied. Five measurements were made: (A) the distance between the interpeduncular fissure and the aqueduct, (B) the distance from the anterior surface of the cerebral peduncles to the aqueduct, (C) the distance between the anterior surface of the pons midway between the mesencephalon and medulla to the fourth ventricular floor, (D) the shortest anteroposterior diameter of the medulla at the pontomedullary junction, and (E) the shortest anteroposterior diameter of the medulla at the medullospinal junction. Pontine diameter could be measured more reproducibly and accurately than mesencephalic or medullary diameters. In four patients with glioma, one or more of the measured diameters were more than 2 SDs above the average in normal volunteers, and abnormally small measurements were found in the patients with atrophy.
在磁共振（MR）图像上测量脑干尺寸，以提供检测脑干增大的标准。28名正常成年受试者进行了矢状位部分饱和及自旋回波序列的MR成像检查。还对4例脑干胶质瘤患者和3例小脑萎缩患者进行了研究。进行了五项测量：（A）脚间裂与导水管之间的距离；（B）大脑脚前表面至导水管的距离；（C）脑桥在中脑与延髓之间中点的前表面至第四脑室底的距离；（D）延髓在脑桥延髓交界处的最短前后径；（E）延髓在延髓脊髓交界处的最短前后径。脑桥直径比中脑或延髓直径测量得更具可重复性和准确性。在4例胶质瘤患者中，所测直径中的一项或多项比正常志愿者的平均值高出2个标准差以上，而萎缩患者则发现测量值异常小。
