Journal Article Experimental assessment of bone mineral density using quantitative computed tomography in Holstein dairy cows

MAETANI, Ayami  ,  ITOH, Megumi  ,  NISHIHARA, Kahori  ,  AOKI, Takahiro  ,  OHTANI, Masayuki  ,  SHIBANO, Kenichi  ,  KAYANO, Mitsunori  ,  YAMADA, Kazutaka  ,  伊藤, めぐみ  ,  滄木, 孝弘  ,  芝野, 健一  ,  茅野, 光範  ,  山田, 一孝

78 ( 7 )  , p.1209-1211 , 2016 , 日本獣医学会
The aim of this study was to assess the measurement of bone mineral density (BMD) by quantitative computed tomography (QCT), comparing the relationships of BMD between QCT and dual-energy X-ray absorptiometry (DXA) and between QCT and radiographic absorptiometry (RA) in the metacarpal bone of Holstein dairy cows (n=27). A significant positive correlation was found between QCT and DXA measurements (r=0.70, P<0.01), and a significant correlation was found between QCT and RA measurements (r=0.50, P<0.01). We conclude that QCT provides quantitative evaluation of BMD in dairy cows, because BMD measured by QCT showed positive correlations with BMD measured by the two conventional methods: DXA and RA.

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