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Bi D, Shi L, Li B, Li Y, Liu C, Le LH, Luo J, Wang S, Ta D. The Protocol of Ultrasonic Backscatter Measurements of Musculoskeletal Properties. PHENOMICS (CHAM, SWITZERLAND) 2024; 4:72-80. [PMID: 38605911 PMCID: PMC11004104 DOI: 10.1007/s43657-023-00122-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/15/2023] [Accepted: 07/19/2023] [Indexed: 04/13/2024]
Abstract
This study aims to introduce the protocol for ultrasonic backscatter measurements of musculoskeletal properties based on a novel ultrasonic backscatter bone diagnostic (UBBD) instrument. Dual-energy X-ray absorptiometry (DXA) can be adopted to measure bone mineral density (BMD) in the hip, spine, legs and the whole body. The muscle and fat mass in the legs and the whole body can be also calculated by DXA body composition analysis. Based on the proposed protocol for backscatter measurements by UBBD, ultrasonic backscatter signals can be measured in vivo, deriving three backscatter parameters [apparent integral backscatter (AIB), backscatter signal peak amplitude (BSPA) and the corresponding arrival time (BSPT)]. AIB may provide important diagnostic information about bone properties. BSPA and BSPT may be important indicators of muscle and fat properties. The standardized backscatter measurement protocol of the UBBD instrument may have the potential to evaluate musculoskeletal characteristics, providing help for promoting the application of the backscatter technique in the clinical diagnosis of musculoskeletal disorders (MSDs), such as osteoporosis and muscular atrophy.
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Affiliation(s)
- Dongsheng Bi
- Center for Biomedical Engineering, School of Information Science and Technology, Fudan University, 2005 Songhu Road, Yangpu District, Shanghai, 200438 China
| | - Lingwei Shi
- Center for Biomedical Engineering, School of Information Science and Technology, Fudan University, 2005 Songhu Road, Yangpu District, Shanghai, 200438 China
| | - Boyi Li
- Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China
| | - Ying Li
- Center for Biomedical Engineering, School of Information Science and Technology, Fudan University, 2005 Songhu Road, Yangpu District, Shanghai, 200438 China
| | - Chengcheng Liu
- Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China
| | - Lawrence H. Le
- Department of Radiology and Diagnostic Imaging, University of Alberta, Edmonton, T6G2B7 Canada
| | - Jingchun Luo
- Human Phenome Institute, Fudan University, Shanghai, 201203 China
| | - Sijia Wang
- Shanghai Institute of Nutrition and Health, Chinese Academy of Sciences, Shanghai, 200031 China
| | - Dean Ta
- Center for Biomedical Engineering, School of Information Science and Technology, Fudan University, 2005 Songhu Road, Yangpu District, Shanghai, 200438 China
- Academy for Engineering and Technology, Fudan University, Shanghai, 200433 China
- Human Phenome Institute, Fudan University, Shanghai, 201203 China
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Hoffmeister BK, Lawler BC, Viano AM, Mobley J. Effect of transducer position on ultrasonic backscatter measurements of cancellous bone. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2023; 154:2858-2868. [PMID: 37930178 DOI: 10.1121/10.0022324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 10/16/2023] [Indexed: 11/07/2023]
Abstract
Ultrasonic backscatter techniques are being developed to detect changes in bone caused by osteoporosis and other diseases. Backscatter measurements performed at peripheral skeletal sites such as the heel may place the interrogated region of bone tissue in the acoustic near field of the transducer. The purpose of this study is to investigate how measurements in the near field affect backscatter parameters used for ultrasonic bone assessment. Ultrasonic measurements were performed in a water tank using a planar 2.25 MHz transducer. Signals were acquired for five transducer-specimen distances: N/4, N/2, 3 N/4, N, and 5 N/4, where N is the near-field distance, a location that represents the transition from the near field to far field. Five backscatter parameters previously identified as potentially useful for ultrasonic bone assessment purposes were measured: apparent integrated backscatter, frequency slope of apparent backscatter (FSAB), frequency intercept of apparent backscatter, normalized mean of the backscatter difference, and backscatter amplitude decay constant. All five parameters depended on transducer-specimen distance to varying degrees with FSAB exhibiting the greatest dependence on distance. These results suggest that laboratory studies of bone should evaluate the performance of backscatter parameters using transducer-specimen distances that may be encountered clinically including distances where the ultrasonically interrogated region is in the near field of the transducer.
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Affiliation(s)
| | - Blake C Lawler
- Department of Physics, Rhodes College, Memphis, Tennessee 38112, USA
| | - Ann M Viano
- Department of Physics, Rhodes College, Memphis, Tennessee 38112, USA
| | - Joel Mobley
- Department of Physics and Astronomy/National Center for Physical Acoustics, University of Mississippi, University, Mississippi 38677, USA
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Hoffmeister BK, Delahunt SI, Downey KL, Viano AM, Thomas DM, Georgiou LA, Gray AJ, Newman WR, Main EN, Pirro G. In Vivo Comparison of Backscatter Techniques for Ultrasonic Bone Assessment at the Femoral Neck. ULTRASOUND IN MEDICINE & BIOLOGY 2022; 48:997-1009. [PMID: 35282987 DOI: 10.1016/j.ultrasmedbio.2022.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 01/15/2022] [Accepted: 01/27/2022] [Indexed: 06/14/2023]
Abstract
Ultrasonic techniques are being developed to detect changes in cancellous bone caused by osteoporosis. The goal of this study was to test the relative in vivo performance of eight backscatter parameters developed over the last several years for ultrasonic bone assessment: apparent integrated backscatter (AIB), frequency slope of apparent backscatter (FSAB), frequency intercept of apparent backscatter (FIAB), normalized mean of the backscatter difference (nMBD), normalized slope of the backscatter difference (nSBD), normalized intercept of the backscatter difference (nIBD), normalized backscatter amplitude ratio (nBAR) and backscatter amplitude decay constant (BADC). Backscatter measurements were performed on the left and right femoral necks of 80 adult volunteers (age = 25 ± 11 y) using an imaging system equipped with a convex array transducer. For comparison, additional ultrasonic measurements were performed at the left and right heel using a commercially available heel-bone ultrasonometer that measured the stiffness index. Six of the eight backscatter parameters (all but nSBD and nIBD) exhibited similar and highly significant (p < 0.000001) left-right correlations (0.51 ≤ R ≤ 0.68), indicating sensitivity to naturally occurring variations in bone tissue. Left-right correlations for the stiffness index measured at the heel (R = 0.75) were not significantly better than those produced by AIB, FSAB and FIAB. The short-term precisions of AIB, nMBD, nBAR and BADC (7.8%-11.7%) were comparable to that of the stiffness index measured with the heel-bone ultrasonometer (7.5%).
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Affiliation(s)
| | | | - Kiera L Downey
- Department of Physics, Rhodes College, Memphis, Tennessee, USA
| | - Ann M Viano
- Department of Physics, Rhodes College, Memphis, Tennessee, USA
| | - Doni M Thomas
- Department of Physics, Rhodes College, Memphis, Tennessee, USA
| | | | - Aubrey J Gray
- Department of Physics, Rhodes College, Memphis, Tennessee, USA
| | - Will R Newman
- Department of Physics, Rhodes College, Memphis, Tennessee, USA
| | - Evan N Main
- Department of Physics, Rhodes College, Memphis, Tennessee, USA
| | - Gia Pirro
- Department of Physics, Rhodes College, Memphis, Tennessee, USA
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4
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Wear K. Scattering in Cancellous Bone. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1364:163-175. [DOI: 10.1007/978-3-030-91979-5_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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