Chinese Journal Of Clinical Anatomy ›› 2016, Vol. 34 ›› Issue (3): 273-277.doi: 10.13418/j.issn.1001-165x.2016.03.008

Previous Articles     Next Articles

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

XU Min1, WANG Cun-zu2,ZHU Xun2,CHEN Pin2   

  1. 1. Department of Neurosurgery, Kunshan TCM Hospital, Kunshan, Jiangsu 215300, China; 2. Department of Neurosurgery, Northern Jiangsu People’s Hospital, Yangzhou, Jiangsu 215001, China
  • Received:2015-08-31 Online:2016-05-25 Published:2016-06-17

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