A Study for B-Mode Imaging Using 100-MHz-Range Ultrasound Through a Fused Quartz Fiber

We have studied the C-mode and B-mode imaging using high-frequency ultrasonic waves through a thin fiber for direct observation of the microscopic image of tissue. In the former experiments, the C-mode images of soft tissues (kidney and stomach) using the penetration method and the B-mode images of a hard tissue (animal bone) using the reflection method were obtained. However, no C-mode image and B-mode image of soft tissue could be obtained using reflection method. In this paper, we report that the B-mode images and a C-mode image of some kinds of soft tissues could be obtained by newly designed High Pass Filter using the reflection method.