上纵束
弓状束
下纵束
纤维束成像
束
解剖
钩束
医学
扣带回(脑)
顶叶上小叶
胼胝体
神经科学
磁共振弥散成像
脑功能偏侧化
中央后回
白质
部分各向异性
磁共振成像
心理学
听力学
放射科
功能磁共振成像
作者
Yueh‐Hsin Lin,Nicholas B. Dadario,Jorge Hormovas,Isabella M. Young,Robert G. Briggs,Alana Mackenzie,Ali H. Palejwala,R. Dineth Fonseka,Sihyong J. Kim,Onur Tanglay,Luke Fletcher,Carol J. Abraham,Andrew K. Conner,Daniel L. O’Donoghue,Michael E. Sughrue
出处
期刊:Operative Neurosurgery
[Oxford University Press]
日期:2021-07-10
卷期号:21 (3): E199-E214
被引量:19
摘要
Abstract BACKGROUND The superior parietal lobule (SPL) is involved in somatosensory and visuospatial integration with additional roles in attention, written language, and working memory. A detailed understanding of the exact location and nature of associated white matter tracts could improve surgical decisions and subsequent postoperative morbidity related to surgery in and around this gyrus. OBJECTIVE To characterize the fiber tracts of the SPL based on relationships to other well-known neuroanatomic structures through diffusion spectrum imaging (DSI)-based fiber tracking validated by gross anatomical dissection as ground truth. METHODS Neuroimaging data of 10 healthy, adult control subjects was obtained from a publicly accessible database published in Human Connectome Project for subsequent tractographic analyses. White matter tracts were mapped between both cerebral hemispheres, and a lateralization index was calculated based on resultant tract volumes. Post-mortem dissections of 10 cadavers identified the location of major tracts and validated our tractography results based on qualitative visual agreement. RESULTS We identified 9 major connections of the SPL: U-fiber, superior longitudinal fasciculus, inferior longitudinal fasciculus, inferior fronto-occipital fasciculus, middle longitudinal fasciculus, extreme capsule, vertical occipital fasciculus, cingulum, and corpus callosum. There was no significant fiber lateralization detected. CONCLUSION The SPL is an important region implicated in a variety of tasks involving visuomotor and visuospatial integration. Improved understanding of the fiber bundle anatomy elucidated in this study can provide invaluable information for surgical treatment decisions related to this region.
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