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KMID : 1103720110640050481
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Journal of the Korean Society of Radiology
2011 Volume.64 No. 5 p.481 ~ p.489
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Measurement of Trabecular Bone Parameters in Porcine Vertebral Bodies Using Multidetector CT: Evaluation of Reproducibility of 3-Dimensional CT Histomorphometry
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An Sang-Bu
Hong Sung-Hwan
Goo Jin-Mo
Moon Kyung-Chul
Kim Kwang-Gi
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Abstract
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Purpose: To evaluate the reproducibility of 3-dimensional histomorphometry for the microarchitecture analysis of trabecular bone parameters using multidetector computed tomography (MDCT).
Materials and Methods : Thirty-six specimens from porcine vertebral bodies were imaged five times with a 64-detector row MDCT system using the same scan protocols. Locations of the specimens were nearly identical through the scans. Three-dimensional structural parameters of trabecular bone were derived from the five data sets using image analyzing software. The features measured by the analysis programs were trabecular bone volume, trabecular bone volume/tissue volume, trabecular thickness, trabecular separation, trabecular number, trabecular bone pattern factor, structural model index.
Results: The structural trabecular parameters showed excellent reproducibility through repeated scanning. Intraclass correlation coefficients of all seven structural parameters were in the range of 0.998 to 1.000. Coefficients of variation of the six structural parameters, excluding structural model index, were not over 1.6%.
Conclusion: The measurement of the trabecular structural parameters using multidetector CT and three-dimensional histomophometry analysis program was validated and showed excellent reproducibility. This method could be used as a noninvasive and easily available test in a clinical setting.
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KEYWORD
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Computed tomography (CT), Bone microarchitecture, Reproducibility
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