Journal of the Korean Orthopaedic Association (대한정형외과학회지)

Korean Orthopaedic Association (대한정형외과학회)
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Analysis and Measurement of the Lumbar Spinal Canal Dimension using Magnetic Resonance Imaging

자기공명영상을 이용한 요추부 척추관 면적 계측 방법 및 분석

Shim, Dae-Moo;Choi, Yun-Hong;Yang, Jung-Hwan;Oh, Sung-Kyun;Kim, Chae-Geun;Park, Jung-Hyun
심대무;최윤홍;양정환;오성균;김채근;박정현

  • Published : 20081000
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Abstract

Purpose: It is very difficult to measure the spinal canal dimension in elderly patients because of disc degeneration and facet joint hypertrophy. The purpose of this study is to determine reference values of the spinal canal dimension in a population of normal Korea subjects and to evaluate other measurement methods of the spinal canal dimension that correlate to normal spinal canal dimensions determined using Magnetic Resonance Imaging (MRI). Materials and Methods: We studied 100 patients who had mild symptoms and had normal MRI findings from 2475 outpatients that had undergone lumbar MRI from November 2002 to May 2004. The dimension of the spinal canal and dural sac was measured at the center of intervertebral discs L3/4, L4/5 and L5/S1. The dimension of the spinal canal and vertebral body was measured and was compared at the transverse plane perpendicular to the spinal canal that transected L4, L5 and the S1 pedicle. Results: For the sequence of L3/4, L4/5 and L5/S1, the mean spinal canal dimensions were 249.38±38.30 mm2, 253.04±48.62 mm2 and 288.46±57.62 mm2, respectively. For the sequence of L4, L5 and S1, the mean spinal canal dimensions were 279.78±42.36 mm2, 301.50±54.26 mm2 and 355.10±60.65 mm2, respectively. The correlation coefficient was high at 0.913 for the L3/4 and L4 interpedicular transverse plane. The correlation coefficient for L4/5 and L5 was 0.905, and the correlation coefficient for L5/S1 and S1 was 0.845. Conclusion: The lumbar spinal canal dimension measured at the intervertebral disc level in a population of normal Korean subjects is expected to be useful as reference data. The transpedicular plane perpendicular to the spinal canal can give information for estimating the spinal canal dimension at the disc level.

목 적: 척추질환에 대한 진단에 자기공명영상 촬영이 일반화 되어 있기에 저자들은 자기공명영상 소견을 이용하여 척추관의 크기를 계측할 수 있는 방법과 한국인의 기준치를 제공 하고자 한다. 대상 및 방법: 2002년 11월 1일에서 2004년 5월 31일까지 본원에 내원하여 요추부 자기공명영상을 시행하여 정상 소견을 보인 100명의 요추부 자기공명영상을 이용하였다. 제 3 요추에서 제 1천추까지 각각의 척추간 및 척추체에서 척추관에 직각인 횡단면에서 척추관 면적을 계측 및 비교하였다. 결 과: 각각의 척추간에서 윗 부분에서부터 척추관의 면적의 평균은 249.38 mm2, 253.04 mm2, 288.46 mm2였으며, 각각의 척추간에서 척추경을 지나는 횡단면에서의 척추관 면적의 평균은 279.78 mm2, 301.50 mm2, 355.10 mm2이었다. 제 3-4요추간과 제 4요추, 제 4-5요추간과 제 5요추, 제 5요추-제 1천추간과 제 1천추의 척추관 면적의 상관계수는 각각 0.913, 0.905, 0.845로 높은 상관관계를 보였다. 결 론: 요추부 자기공명영상 촬영 시 추간판 위치에서의 척추관 면적에 대한 정보를 제공할 수 있는 척추경을 지나는 척추관에 직각 횡단면을 포함하여 촬영하는 것이 유용할 것으로 사료된다.

Keywords

References

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