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Author:

Wei, Yi (Wei, Yi.) | Feng, Wentian (Feng, Wentian.) | Li, Guanghui (Li, Guanghui.) | Li, Zuchang (Li, Zuchang.) | Liu, Zaiwei (Liu, Zaiwei.) | Cheng, Xiaoguang (Cheng, Xiaoguang.) | Yang, Haisheng (Yang, Haisheng.) (Scholars:杨海胜)

Indexed by:

EI Scopus SCIE

Abstract:

Osteoporosis is characterized by reduced bone strength predisposing to an increased risk of fracture. Biomechanical computed tomography (BCT), predicting bone strength via CT-based finite element analysis (FEA), is now clinically available in the USA for diagnosing osteoporosis or assessing fracture risk. How-ever, it has not been previously validated using a cohort of only Chinese subjects. Additionally, the effect of various modeling approaches on BCT outcomes remains elusive. To address these issues, we performed DXA and QCT scanning, compression testing, and BCT analyses on thirteen vertebrae derived from Chi-nese donors. Three BCT models were created (voxBCT and tetBCT: voxel-based and tetrahedral element -based FE models generated by a commercial software; matBCT: tetrahedral element-based FE model generated by a custom MATLAB program). BCT-computed outcomes were compared with experimental measures or between different BCT models. Results showed that, DXA-measured areal bone mineral den-sity (aBMD) showed weak correlations with experimentally-measured vertebral stiffness (R-2 = 0.28) and strength (R-2 = 0.34). Compared to DXA-aBMD, BCT-computed stiffness provided improved correlations with experimentally-measured stiffness (voxBCT: R-2 = 0.82; tetBCT: R 2 = 0.77; matBCT: R-2 = 0.76) and strength (voxBCT: R-2 = 0.55; tetBCT: R-2 = 0.57; matBCT: R-2 = 0.53); BCT-computed mechanical param-eters (stiffness, stress and strain) of the three different models were highly correlated with each other, with coefficient of determination (R-2) values of 0.89-0.98. These results, based on a cohort of Chinese vertebral cadavers, suggest that BCT is superior over aBMD to consistently predict vertebral mechanical characteristics, regardless of the modeling approaches of choice. (C) 2021 IPEM. Published by Elsevier Ltd. All rights reserved.

Keyword:

Quantitative computed tomography Finite element analysis Osteoporosis Vertebral fracture risk

Author Community:

  • [ 1 ] [Wei, Yi]Beijing Jishuitan Hosp, Dept Spinal Surg, Beijing 100035, Peoples R China
  • [ 2 ] [Li, Zuchang]Beijing Jishuitan Hosp, Dept Spinal Surg, Beijing 100035, Peoples R China
  • [ 3 ] [Feng, Wentian]Beijing Univ Technol, Fac Environm & Life, Dept Biomed Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 4 ] [Li, Guanghui]Beijing Univ Technol, Fac Environm & Life, Dept Biomed Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 5 ] [Liu, Zaiwei]Beijing Univ Technol, Fac Environm & Life, Dept Biomed Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 6 ] [Yang, Haisheng]Beijing Univ Technol, Fac Environm & Life, Dept Biomed Engn, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 7 ] [Cheng, Xiaoguang]Beijing Jishuitan Hosp, Dept Radiol, Beijing 100035, Peoples R China

Reprint Author's Address:

  • 杨海胜

    [Yang, Haisheng]Beijing Univ Technol, Fac Environm & Life, Dept Biomed Engn, 100 Pingleyuan, Beijing 100124, Peoples R China

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Source :

MEDICAL ENGINEERING & PHYSICS

ISSN: 1350-4533

Year: 2021

Volume: 93

Page: 8-16

2 . 2 0 0

JCR@2022

ESI Discipline: CLINICAL MEDICINE;

ESI HC Threshold:75

JCR Journal Grade:3

Cited Count:

WoS CC Cited Count: 8

SCOPUS Cited Count: 9

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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