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, Dong Ah
AU - Ji, Gyu Yeul
AU - Oh, Chang Hyun
AU - Kim, Keung Nyun
AU - Yoon, Do Heum
AU - Shin, Hyunchul
N1 - Publisher Copyright:
© 2017 The Korean Neurosurgical Society.
PY - 2017
Y1 - 2017
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.
UR - http://www.scopus.com/inward/record.url?scp=85022181279&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85022181279&partnerID=8YFLogxK
U2 - 10.3340/jkns.2015.0708.014
DO - 10.3340/jkns.2015.0708.014
M3 - Article
AN - SCOPUS:85022181279
SN - 2005-3711
VL - 60
SP - 441
EP - 447
JO - Journal of Korean Neurosurgical Society
JF - Journal of Korean Neurosurgical Society
IS - 4
ER -