Inter- and intra-observer variability of the volume of cervical ossification of the posterior longitudinal ligament using medical image processing software

DongAh Shin, Gyu Yeul Ji, Chang Hyun Oh, Keung Nyun Kim, Do Heum Yoon, Hyunchul Shin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Objective: Computed tomography (CT)-based method of three dimensional (3D) analysis (MIMICS ®, Materialise, Leuven, Belgium) is reported as very useful software for evaluation of OPLL, but its reliability and reproducibility are obscure. This study was conducted to evaluate the accuracy of MIMICS ® system, and inter- and intra-observer reliability in the measurement of OPLL. Methods: Three neurosurgeons independently analyzed the randomly selected 10 OPLL cases with medical image processing software (MIMICS ®) which create 3D model with Digital Imaging and Communication in Medicine (DICOM) data from CT images after brief explanation was given to examiners before the image construction steps. To assess the reliability of inter- and intra-examiner intraclass correlation coefficient (ICC), 3 examiners measured 4 parameters (volume, length, width, and length) in 10 cases 2 times with 1-week interval. Results: The inter-examiner ICCs among 3 examiners were 0.996 (95% confidence interval [CI], 0.987–0.999) for volume measurement, 0.973 (95% CI, 0.907–0.978) for thickness, 0.969 (95% CI, 0.895–0.993) for width, and 0.995 (95% CI, 0.983–0.999) for length. The intra-examiner ICCs were 0.994 (range, 0.991–0.996) for volume, 0.996 (range, 0.944–0.998) for length, 0.930 (range, 0.873–0.947) for width, and 0.987 (range, 0.985–0.995) for length. Conclusion: The medical image processing software (MIMICS ®) provided detailed quantification OPLL volume with minimal error of inter- and intra-observer reliability in the measurement of OPLL.

Original languageEnglish
Pages (from-to)441-447
Number of pages7
JournalJournal of Korean Neurosurgical Society
Volume60
Issue number4
DOIs
Publication statusPublished - 2017 Jan 1

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Ossification of Posterior Longitudinal Ligament
Observer Variation
Software
Confidence Intervals
Tomography
Belgium
Communication
Medicine

All Science Journal Classification (ASJC) codes

  • Surgery
  • Neuroscience(all)
  • Clinical Neurology

Cite this

@article{2d26f6c0019b4747833a894c8c2a78a0,
title = "Inter- and intra-observer variability of the volume of cervical ossification of the posterior longitudinal ligament using medical image processing software",
abstract = "Objective: Computed tomography (CT)-based method of three dimensional (3D) analysis (MIMICS {\circledR}, Materialise, Leuven, Belgium) is reported as very useful software for evaluation of OPLL, but its reliability and reproducibility are obscure. This study was conducted to evaluate the accuracy of MIMICS {\circledR} system, and inter- and intra-observer reliability in the measurement of OPLL. Methods: Three neurosurgeons independently analyzed the randomly selected 10 OPLL cases with medical image processing software (MIMICS {\circledR}) which create 3D model with Digital Imaging and Communication in Medicine (DICOM) data from CT images after brief explanation was given to examiners before the image construction steps. To assess the reliability of inter- and intra-examiner intraclass correlation coefficient (ICC), 3 examiners measured 4 parameters (volume, length, width, and length) in 10 cases 2 times with 1-week interval. Results: The inter-examiner ICCs among 3 examiners were 0.996 (95{\%} confidence interval [CI], 0.987–0.999) for volume measurement, 0.973 (95{\%} CI, 0.907–0.978) for thickness, 0.969 (95{\%} CI, 0.895–0.993) for width, and 0.995 (95{\%} CI, 0.983–0.999) for length. The intra-examiner ICCs were 0.994 (range, 0.991–0.996) for volume, 0.996 (range, 0.944–0.998) for length, 0.930 (range, 0.873–0.947) for width, and 0.987 (range, 0.985–0.995) for length. Conclusion: The medical image processing software (MIMICS {\circledR}) provided detailed quantification OPLL volume with minimal error of inter- and intra-observer reliability in the measurement of OPLL.",
author = "DongAh Shin and Ji, {Gyu Yeul} and Oh, {Chang Hyun} and Kim, {Keung Nyun} and Yoon, {Do Heum} and Hyunchul Shin",
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Inter- and intra-observer variability of the volume of cervical ossification of the posterior longitudinal ligament using medical image processing software. / Shin, DongAh; Ji, Gyu Yeul; Oh, Chang Hyun; Kim, Keung Nyun; Yoon, Do Heum; Shin, Hyunchul.

In: Journal of Korean Neurosurgical Society, Vol. 60, No. 4, 01.01.2017, p. 441-447.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Inter- and intra-observer variability of the volume of cervical ossification of the posterior longitudinal ligament using medical image processing software

AU - Shin, DongAh

AU - Ji, Gyu Yeul

AU - Oh, Chang Hyun

AU - Kim, Keung Nyun

AU - Yoon, Do Heum

AU - Shin, Hyunchul

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Objective: Computed tomography (CT)-based method of three dimensional (3D) analysis (MIMICS ®, Materialise, Leuven, Belgium) is reported as very useful software for evaluation of OPLL, but its reliability and reproducibility are obscure. This study was conducted to evaluate the accuracy of MIMICS ® system, and inter- and intra-observer reliability in the measurement of OPLL. Methods: Three neurosurgeons independently analyzed the randomly selected 10 OPLL cases with medical image processing software (MIMICS ®) which create 3D model with Digital Imaging and Communication in Medicine (DICOM) data from CT images after brief explanation was given to examiners before the image construction steps. To assess the reliability of inter- and intra-examiner intraclass correlation coefficient (ICC), 3 examiners measured 4 parameters (volume, length, width, and length) in 10 cases 2 times with 1-week interval. Results: The inter-examiner ICCs among 3 examiners were 0.996 (95% confidence interval [CI], 0.987–0.999) for volume measurement, 0.973 (95% CI, 0.907–0.978) for thickness, 0.969 (95% CI, 0.895–0.993) for width, and 0.995 (95% CI, 0.983–0.999) for length. The intra-examiner ICCs were 0.994 (range, 0.991–0.996) for volume, 0.996 (range, 0.944–0.998) for length, 0.930 (range, 0.873–0.947) for width, and 0.987 (range, 0.985–0.995) for length. Conclusion: The medical image processing software (MIMICS ®) provided detailed quantification OPLL volume with minimal error of inter- and intra-observer reliability in the measurement of OPLL.

AB - Objective: Computed tomography (CT)-based method of three dimensional (3D) analysis (MIMICS ®, Materialise, Leuven, Belgium) is reported as very useful software for evaluation of OPLL, but its reliability and reproducibility are obscure. This study was conducted to evaluate the accuracy of MIMICS ® system, and inter- and intra-observer reliability in the measurement of OPLL. Methods: Three neurosurgeons independently analyzed the randomly selected 10 OPLL cases with medical image processing software (MIMICS ®) which create 3D model with Digital Imaging and Communication in Medicine (DICOM) data from CT images after brief explanation was given to examiners before the image construction steps. To assess the reliability of inter- and intra-examiner intraclass correlation coefficient (ICC), 3 examiners measured 4 parameters (volume, length, width, and length) in 10 cases 2 times with 1-week interval. Results: The inter-examiner ICCs among 3 examiners were 0.996 (95% confidence interval [CI], 0.987–0.999) for volume measurement, 0.973 (95% CI, 0.907–0.978) for thickness, 0.969 (95% CI, 0.895–0.993) for width, and 0.995 (95% CI, 0.983–0.999) for length. The intra-examiner ICCs were 0.994 (range, 0.991–0.996) for volume, 0.996 (range, 0.944–0.998) for length, 0.930 (range, 0.873–0.947) for width, and 0.987 (range, 0.985–0.995) for length. Conclusion: The medical image processing software (MIMICS ®) provided detailed quantification OPLL volume with minimal error of inter- and intra-observer reliability in the measurement of OPLL.

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