AN EVALUATION OF AN INVIVO LOCAL SOUND SPEED ESTIMATION TECHNIQUE BY THE CROSSED BEAM METHOD

被引：27

作者：

KONDO, M

TAKAMIZAWA, K

HIRAMA, M

OKAZAKI, K

IINUMA, K

TAKEHARA, Y

机构：

[1] TOSHIBA CO LTD,MED ENGN LAB,OOTAWARA 32926,JAPAN

[2] KANTO CENT HOSP,SETAGAYA KU,TOKYO 158,JAPAN

来源：

ULTRASOUND IN MEDICINE AND BIOLOGY | 1990年 / 16卷 / 01期

关键词：

Electronic scanning; Liver tumor; Mapping; Ray tracing technique; Refraction; Sound speed; Ultrasonic tissue characterization crossed beam method; Ultrasound; Ultrasound beam;

D O I：

10.1016/0301-5629(90)90087-S

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

An in vivo local sound speed estimation technique, using the crossed beam method, has been proposed and its applicability was evaluated. At first, the potential of this technique was studied by a mapping simulation using the ray tracing technique followed by an experiment with a cylindrical agar phantom. The simulation result showed that an exact measurement of local sound speed values was difficult, but the sound speed information for the local region (its relative magnitude to the surrounding medium) was emphasized as a refraction mapping pattern. The experimental results agreed well with the calculation results. Furthermore, a clinical application was performed, using the clinical system (modified electronic linear scanner), on two liver tumor patients. © 1990.

引用

页码：65 / 72

页数：8