BROAD-BAND ULTRASONIC-ATTENUATION IMAGING - A NEW IMAGING TECHNIQUE OF THE OS CALCIS

被引：56

作者：

LAUGIER, P

GIAT, P

BERGER, G

机构：

[1] Laboratoire Imagerie Paramétrique, URA CNRS 1458, Paris, 75006

来源：

CALCIFIED TISSUE INTERNATIONAL | 1994年 / 54卷 / 02期

关键词：

ULTRASOUND ATTENUATION; BONE; OSTEOPOROSIS;

D O I：

10.1007/BF00296055

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

Ultrasound transmission measurement through the os calcis is an emerging technique and a promising clinical tool for early assessment of osteoporosis. However, several previous studies showed that broadband ultrasonic attenuation (BUA) is sensitive to small variations in bone mass or structure. The os calcis is an inhomogeneous bone and therefore, the attenuation depends on the location in the os calcis. BUA distribution within the os calcis can be measured by rectilinear scanning over the entire bone. We used a mechanical scanning device with both unfocused and focused transducers. The spatial resolution of these was about 25 mm and 4 mm, respectively. There was good agreement (r = 0.97) between the results with unfocused and focused transducers. In addition, imaging the variations of BUA is possible with the focused transducers, and high quality images are obtained. These images permit the selection of optimal regions of interest for ultrasound attenuation measurement.

引用

页码：83 / 86

页数：4

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