Cerebellar dentate nucleus and its veins on susceptibility weighted imaging

YAO Xiao-Xiao; REN Chuan-Gen; CHEN Dai-Qian; MIAO Hui-Zhong; CHEN Zheng-Zhen; YANG Xin-Dong; LI Chang-Sheng; CHEN Cheng-Chun

doi:10.16098/j.issn.0529-1356.2020.02.015

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Acta Anatomica Sinica ›› 2020, Vol. 51 ›› Issue (2) : 239-244. DOI: 10.16098/j.issn.0529-1356.2020.02.015

Cerebellar dentate nucleus and its veins on susceptibility weighted imaging

YAO Xiao-xiao¹ REN Chuan-gen² CHEN Dai-xi³ MIAO Hui-zhong¹ CHEN Zheng-zhen¹ YANG Xin-dong¹ LI Chang-sheng¹ CHEN Cheng-chun^1*

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Abstract

Objective Make use of image dentate nucleus and the veins around it on susceptibility weighted images (SWI), explore the correlation between the location of hilum of dentate nucleus and the venous variation of dentate nucleus. Methods Selecting 51 healthy adults (24 men, 27 women) at the age between 18 and 30 years old to get the original images on 3.0T MR. Process the original images by minimum intensity projections (mIP) observed and analyzed the morphology of dentate nucleus and veins around it on original and processed images. Results The length of dentate nucleus was (16.64±0.20)mm, and the width was (8.36±0.14)mm. There was no significant difference between bilateral dentate nucleus. The median angle of the long axis of the dentate nucleus was 26.80° (interquartile distance was 34.58°). The venous network of dentate nucleus was formed in 2 groups of veins: the lateral group, drained by the vein of the horizontal fissure and nuclear vein; the medial group, drained by vermian vein and central vein of dentate nucleus. These two groups had been further typing as follows: the lateral anterior group drained by the nuclear vein, finally opening to superior petrosal sinus; the lateral median group had plenty of small veins of lateral dentate nucleus converge into the vein of the horizontal fissure; the lateral posterior group drained by a lot of very small veins converging to vermian veins or medullary veins; the medial anterior group that the central vein of dentate nucleus and the paravermian vein were jointed at hilum of dentate

ucleus, opening into straight sinus; the medial posterior group usually converged into tributaries of vermian vein, or converged with paravermian vein into tributaries of vermian vein. Totally 75.49% of hilums of dentate nucleus were located at upper inner quadrant, the other 24.51% of them were located at lower inner quadrant. Conclusion Dentate nucleus and its veins are clearly visible on the susceptibility weighted images, and the location of the hilum of dentate nucleus may be related to the abouchement of paravermian vein.

Key words

Dentate nucleus / Hilum of dentate nucleus / Venous variation of dentate nucleus / Susceptibility weighted imaging / Human

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YAO Xiao-xiao REN Chuan-gen CHEN Dai-xi MIAO Hui-zhong CHEN Zheng-zhen YANG Xin-dong LI Chang-sheng CHEN Cheng-chun. Cerebellar dentate nucleus and its veins on susceptibility weighted imaging[J]. Acta Anatomica Sinica. 2020, 51(2): 239-244 https://doi.org/10.16098/j.issn.0529-1356.2020.02.015

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