Kimmey M B, Martin R W, Silverstein F E
Department of Medicine, University of Washington, Seattle.
Gastrointest Endosc. 1990 Mar-Apr;36(2 Suppl):S40-6. doi: 10.1016/s0016-5107(90)71014-0.
Ultrasound probes are being developed as alternatives to dedicated ultrasound endoscopes. These probes have been designed to pass through the instrument channel of ordinary fiberoptic or video endoscopes. We have developed a 20-MHz mechanical linear probe for use within the upper gastrointestinal tract, pancreatic duct, biliary tree, and colon. Rotational mechanical sector scanning probes as well as phased array probes are also being developed. Ultrasound probes are best used for high resolution imaging of focal endoscopically visible lesions. Endoscopic visualization enables direction of the probe to the lesion of interest. Unlike dedicated ultrasound endoscopes, ultrasound probes do not screen large areas of tissue and do not have deep penetration. Ongoing research will help define the indications for use of these probes and should lead to further refinements in their design.
超声探头正在被开发作为专用超声内镜的替代产品。这些探头被设计成可通过普通纤维光学或视频内镜的器械通道。我们已经开发出一种20兆赫的机械线性探头，用于上消化道、胰管、胆管树和结肠。旋转机械扇形扫描探头以及相控阵探头也在开发中。超声探头最适合用于对内镜下可见的局灶性病变进行高分辨率成像。内镜可视化能够将探头指向感兴趣的病变部位。与专用超声内镜不同，超声探头不会对大面积组织进行筛查，且穿透深度不足。正在进行的研究将有助于明确这些探头的使用指征，并应会促使其设计得到进一步改进。
