Press G A, Murakami J W, Courchesne E, Grafe M, Hesselink J R
Department of Radiology, University of California, San Diego 92103-1990.
AJR Am J Roentgenol. 1990 Mar;154(3):593-602. doi: 10.2214/ajr.154.3.2106226.
Thin (5-mm) coronal high-field (1.5-T) MR images of four human brain specimens and 14 normal volunteers were correlated with myelin-stained microtomic sections of the specimen cerebella. The primary white-matter tracts innervating several hemispheric (posterior quadrangular, superior, and inferior semilunar, gracile, biventer, tonsil) and vermian (declive, folium, tuber) lobules are oriented perpendicularly to the coronal plane of section and are shown well on proton-density-weighted (long TR/short TE) and T2-weighted (long TR/long TE) spin-echo images, which provide excellent contrast between gray and white matter. Several of the surface sulci and fissures of the cerebellar hemispheres (including the superior posterior, horizontal, secondary, and posterolateral fissures) also course perpendicular to the coronal plane and are depicted well on T1-weighted (short TR/short TE) and T2-weighted images, which maximize contrast between CSF and parenchyma. The opportunity for side-to-side comparison of the hemispheres is a distinct advantage of the coronal view. Nevertheless, more obliquely oriented surfaces (preculminate, primary, inferior posterior, inferior anterior, and intrabiventral fissures) and deep hemispheric structures (primary white-matter tracts to central, anterior quadrangular, and floccular lobules) may be obscured by volume-averaging in the coronal plane; moreover, much of the finer anatomy of the vermis is depicted poorly. The constant surface and deep anatomy of the cerebellum revealed on coronal images in normal volunteers encourages detailed mapping. MR imaging in the coronal plane should be especially useful in identifying, localizing, and quantifying normal and abnormal morphologic differences between the cerebellar hemispheres.
对4个人脑标本和14名正常志愿者进行了5毫米厚的冠状面高场（1.5-T）磁共振成像，并将其与标本小脑的髓鞘染色切片进行了对比。支配几个半球叶（后四边形叶、上半月叶、下半月叶、薄束叶、二腹叶、扁桃体叶）和蚓部叶（山坡叶、小叶、结节叶）的主要白质束垂直于切片的冠状面排列，在质子密度加权（长TR/短TE）和T2加权（长TR/长TE）自旋回波图像上显示良好，这些图像能很好地显示灰质和白质之间的对比。小脑半球的一些表面沟和裂（包括上后裂、水平裂、次级裂和后外侧裂）也垂直于冠状面走行，在T1加权（短TR/短TE）和T2加权图像上显示良好，这些图像能使脑脊液和实质之间的对比最大化。冠状面观察能对半球进行左右对比，这是一个明显的优势。然而，更倾斜的表面（山顶前裂、初级裂、下后裂、下前裂和二腹叶内裂）和深部半球结构（至中央叶、前四边形叶和绒球小叶的主要白质束）可能会因冠状面的容积平均效应而被遮挡；此外，蚓部的许多精细解剖结构显示不佳。正常志愿者冠状图像上显示的小脑恒定的表面和深部解剖结构有助于进行详细的图谱绘制。冠状面磁共振成像在识别、定位和量化小脑半球之间的正常和异常形态差异方面应该特别有用。
