✦ LIBER ✦

A reflection scanning acoustic microscope for bone and bone-biomaterials interface studies

✍ Scribed by Dr. A. Meunier; J. L. Katz; P. Christel; L. Sedel

Publisher: Elsevier Science
Year: 1988
Tongue: English
Weight: 540 KB
Volume: 6
Category: Article
ISSN: 0736-0266
DOI: 10.1002/jor.1100060521

No coin nor oath required. For personal study only.

✦ Synopsis

A relatively simple scanning acoustic microscope (SAM) that operates in the reflection mode has been constructed. The system uses a 20 MHz spherically focused transducer, acting both as transmitter and as detector, to obtain acoustic impedance information on a thin surface layer at a maximum resolution of approximately 100 micron. The specimen is mounted on an X-Y driving system (precision, 5 micron) under computer control in order to scan a grid of 256 x 256 points across areas ranging from 6.5 to 1300 mm2. An algorithm is used to reference the data against standards; specially developed software provides for pseudo-color mapping, three-dimensional images, zooming to 16 x magnification, contouring, and single line profiles of the data. The system has been used to determine inhomogeneities in surface acoustic properties of mineralized tissues and implant materials, in many cases as a complement to using ultrasonic wave propagation techniques to measure the bulk anisotropic properties.

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