经后纵裂-胼胝体入路治疗丘脑后部肿瘤的MRI解剖学研究

doi:10.13418/j.issn.1001-165x.2016.03.008

Abstract

Abstract:

Objective　To measure anatomical data for posterior transcallosal approach in dealing with tumors in posterior thalamus for normalization and optimization of the surgical approach.　Methods　One hundred and twenty midline sagittal T2-weighted magnetic resonance images (children group, 25 cases; adult group, 95 cases) were obtained. Taking lambda as a reference point, surgical schemes 1 and 2 were established. Two surgical plans of the posterior transcallosal approach to posterior thalamus on the images were simulated and the data of the related anatomical structures were obtained.　Results　(1)Data obtained from the scheme 1 and 2 showed that the skull window was located as follows: in children group, the skull window of scheme 1 was located before lambda (≤29.89±4.36 mm),while after lambda (≤37.04±3.22 mm); in adult group, the skull window of scheme 1 was located before lambda (≤31.20±7.36 mm),while after lambda (≤43.05±10.36 mm).In children group, the skull window of scheme 2 was located after lambda (≤37.04±3.22 mm); in adult group, the skull window of scheme 2 was located after lambda (≤43.05±10.36 mm). (2) The average length between lambda and posterior thalamus in children was (82.71±3.92) mm, while in adult group was (87.42±9.24) mm. The surgical angle of scheme 1 was shown as follows: in children group was less than (44.56±4.15)°, while in adult was less than (55.02±7.42)°. The surgical angle of scheme 2 was shown as follows: in children group was less than (24.28±3.25)°, while in adult was less than (31.33±8.25)°.　Conclusions　The sufficient evaluation of MRI is helpful to master the approach. Furthermore, to select, optimize the surgical approach and increase the clinical curative effects.

Key words: Magnetic resonance imaging, Posterior thalamus, Posterior transcallosal approach, Surgical approach

XU Min， WANG Cun-zu，ZHU Xun，CHEN Pin. Simulation of the surgery of posterior transcallosal approach to posterior thalamus on MRI[J]. Chinese Journal Of Clinical Anatomy, 2016, 34(3): 273-277.

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Simulation of the surgery of posterior transcallosal approach to posterior thalamus on MRI

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