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RESEARCH PRODUCT
Comparison of three ultrasonic axial transmission methods for bone assessment.
Maryline TalmantMarie MullerJussi TimonenEmmanuel BossyPatrick NicholsonSulin ChengPascal LaugierVantte KilappaPetro Moilanensubject
MaleMaterials scienceAcoustics and UltrasonicsBiophysicsSignalBone and BonesBone DensitymedicineCadaverHumansRadiology Nuclear Medicine and imagingUltrasonicsQuantitative computed tomographyAxial transmissionAgedUltrasonographyAged 80 and overRadiological and Ultrasound Technologymedicine.diagnostic_testAnatomyMiddle AgedTrabecular boneRadiusmedicine.anatomical_structureMineral densityCortical boneUltrasonic sensorFemaleBiomedical engineeringdescription
Abstract This study compared three approaches to bone assessment using ultrasonic axial transmission. In 41 fresh human radii, velocity of the first arriving signal was measured with a commercial device (Sunlight Omnisense ™ ) operating at 1.25 MHz, a prototype based on 1-MHz bidirectional axial transmission and a low-frequency (200 kHz) prototype, also measuring the velocity of a slower wave. Cortical and trabecular bone mineral density, cortical thickness and cross-sectional area were determined by peripheral quantitative computed tomography. Significant but modest correlation between velocities reflects differences in the nature of the propagating waves and methodological differences. Of the higher frequency devices, bidirectional measurements provided stronger correlations with bone properties than did conventional measurements. High-frequency devices were less sensitive to cortical thickness than was the low-frequency device, because higher frequency waves interrogate thinner cortical layers. The results suggest that different axial transmission approaches reflect different bone properties. Therefore, a multifrequency technique might be useful in probing different bone properties. (E-mail: marie.muller@lip.bhdc.jussieu.fr )
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2005-05-01 | Ultrasound in medicinebiology |