Isao Mano1, Kaoru Horii2, Hiroshi Hagino3, Takami Miki4, Mami Matsukawa5, Takahiko Otani5. 1. Office for Research Initiatives and Development, Doshisha University, Kyotanabe, 610-0321, Kyoto, Japan. imano@mail.doshisha.ac.jp. 2. Oyo Electric Co., Ltd., Joyo, 610-0101, Kyoto, Japan. 3. Faculty of Medicine, Tottori University, Yonago, 683-0826, Tottori, Japan. 4. Izumiotsu Municipal Hospital, Izumiotsu, 595-0027, Osaka, Japan. 5. Faculty of Science and Engineering, Doshisha University, Kyotanabe, 610-0321, Kyoto, Japan.
Abstract
PURPOSE: To verify the measurement of cortical bone thickness at the distal radius in vivo using an ultrasonic method. METHODS: The method for estimating cortical bone thickness was derived from experiments with in vitro bovine specimens. Propagation time of echo waves and propagation time of slow waves were used for the estimation. The outside diameter of cortical bone and the cortical bone thickness at the distal 5.5 % site of radius were measured with the new ultrasonic bone measurement system, and the results were compared with X-ray pQCT clinical measurements. RESULTS: There was a high positive correlation (r: 0.76) between the cortical bone thickness measured by the new ultrasonic system and the X-ray pQCT results. CONCLUSION: We will be able to measure not only cancellous bone density but also cortical bone thickness in vivo using ultrasonic waves (without X-ray) safely and repeatedly.
PURPOSE: To verify the measurement of cortical bone thickness at the distal radius in vivo using an ultrasonic method. METHODS: The method for estimating cortical bone thickness was derived from experiments with in vitro bovine specimens. Propagation time of echo waves and propagation time of slow waves were used for the estimation. The outside diameter of cortical bone and the cortical bone thickness at the distal 5.5 % site of radius were measured with the new ultrasonic bone measurement system, and the results were compared with X-ray pQCT clinical measurements. RESULTS: There was a high positive correlation (r: 0.76) between the cortical bone thickness measured by the new ultrasonic system and the X-ray pQCT results. CONCLUSION: We will be able to measure not only cancellous bone density but also cortical bone thickness in vivo using ultrasonic waves (without X-ray) safely and repeatedly.
Entities:
Keywords:
Cortical bone thickness; Distal radius; Fast and slow waves; pQCT
Authors: Joshua N Farr; Sundeep Khosla; Yuko Miyabara; Virginia M Miller; Ann E Kearns Journal: J Clin Endocrinol Metab Date: 2013-01-15 Impact factor: 5.958
Authors: H K Genant; K Engelke; D A Hanley; J P Brown; M Omizo; H G Bone; A J Kivitz; T Fuerst; H Wang; M Austin; C Libanati Journal: Bone Date: 2010-04-22 Impact factor: 4.398
Authors: Ego Seeman; Pierre D Delmas; David A Hanley; Deborah Sellmeyer; Angela M Cheung; Elizabeth Shane; Ann Kearns; Thierry Thomas; Steven K Boyd; Stephanie Boutroy; Cesar Bogado; Sharmila Majumdar; Michelle Fan; Cesar Libanati; Jose Zanchetta Journal: J Bone Miner Res Date: 2010-08 Impact factor: 6.741
Authors: Moira A Petit; Misti L Paudel; Brent C Taylor; Julie M Hughes; Elsa S Strotmeyer; Ann V Schwartz; Jane A Cauley; Joseph M Zmuda; Andrew R Hoffman; Kristine E Ensrud Journal: J Bone Miner Res Date: 2010-02 Impact factor: 6.741