Chinese Journal Of Clinical Anatomy ›› 2016, Vol. 34 ›› Issue (5): 495-498.doi: 10.13418/j.issn.1001-165x.2016.05.004

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The precision of the 2D/3D registration techniques in measuring the cervical intervertebral foramen morphology

ZHANG Xin-tao1, YE Qiang1, LI Jian-yi2, PENG Peng2, LI Shao-Lin1   

  1. 1. Department of Radiology, The Third Affiliate Hospital, Southern Medical University, Guangzhou 510630,China;  2.Department of Anatomy, Guangdong Provincial Key Laboratory of Medical Biomechanics, Southern Medical University, Guangzhou 510515,China
  • Received:2016-04-11 Online:2016-09-25 Published:2016-10-14

Abstract:

Objective To investigate the 2D/3D registration techniques in measurement accuracy of cervical intervertebral foramen morphology in specimens. Method Spiral CT images from 16 cervical specimens were collected to obtain a three-dimensional model through three-dimensional reconstruction. CT scan and lateral radiography with each isolated specimens after changed the position of the specimen were performed. 2D/3D image registration techniques were used to restore the cervical spine’s three-dimensional position where we had taken the X-rays. The bilateral foramen area, anteroposterior diameter and vertical diameter from C2/3 to C6/7 before and after registration were measured using Rapidform XOR3. Results The number of the foramen area, anteroposterior diameter and vertical diameter were measured were 158. Compared with the pre-registration, the registration area of the intervertebral foramen, anteroposterior diameter, and vertical diameter showed no significant difference (P>0.05) by paired samples t-test. The accuracy of the intervertebral foramen area was 96.77%, with a precision of (1.27±1.16) mm2, the accuracy of the anteroposterior diameter was 94.35% with a precision of (0.30±0.27) mm, the diameter of the upper and lower accurate degree was 96.14% with a precision of (0.32±0.28) mm. Conclusion Application of 2D/3D registration techniques to measure cervical intervertebral morphological parameters was high in accuracy and precision.

Key words: Cervical spine, Intervertebral foramen, 2D/3D registration