富士フイルムヘルスケア株式会社製骨密度測定装置ALPHYS*1 LFにて、少数例ではあるがボランティアにおいて装置の最小有意変化(least significant
changer:LSC)を測定し装置の高い精度を確認した。また、今装置より搭載された大腿部近位における除脂肪・脂肪量の測定が現行で行っていたCT装置の除脂肪量・脂肪量の測定と比較し、測定値の妥当性と有用性を評価し相関性を確認した。
CT検査は高額な費用と放射線被ばくなどの問題もあるため、腰椎・大腿骨の骨密度検査から筋量の指標を同時に測定できれば、患者への負担も少ない簡便なサルコペニア評価法などとしての有用性が期待できる。
Using the ALPHYS LF bone densitometry device manufactured by FUJIFILM Healthcare Corporation, the least significant changer (LSC) of the device was measured in a small number of volunteers, confirming the high accuracy of the device. In addition, we compared the measurement of fat-free mass and fat mass in the proximal thigh, which is now
mounted on the device, with the measurement of fat-free mass and fat mass of the current CT device, and evaluated the validity and usefulness of the measured values. was evaluated and the correlation was confirmed.
CT examination has problems such as high cost and radiation exposure, so if muscle mass index can be measured simultaneously with bone density examination of lumbar spine and femur, it will be useful as a simple sarcopenia evaluation method with less burden on patients. can be expected.