Lancée C T, de Jong N, Bom N
Erasmus University, Rotterdam, the Netherlands.
Med Prog Technol. 1988;13(3):139-48.
The clinical urge for echocardiographic data from patients with inadequate image quality at the precordial examination has initiated the development of transesophageal scanning techniques. The orientation of heart structures with respect to the transducer position in the esophagus, the absence of interfering structures in the soundbeam and the constraints imposed by the anatomy of the esophagus result in a different set of parameters for the optimization of the transducer and its assembly. In this article, the design and construction of a miniaturized 5 MHz phased array transducer optimized for transesophageal scanning is described. Relevant parameters and their influence on the design will be discussed, such as: bandwidth, sensitivity, resolution (in three dimensions), focal depth and the production method.
对于那些在前胸检查时图像质量欠佳的患者，临床对超声心动图数据的需求促使了经食管扫描技术的发展。心脏结构相对于食管中换能器位置的取向、声束中无干扰结构以及食管解剖结构所带来的限制，导致了用于优化换能器及其组件的另一组参数。在本文中，描述了一种为经食管扫描优化的小型化5兆赫相控阵换能器的设计与构造。将讨论相关参数及其对设计的影响，例如：带宽、灵敏度、（三维）分辨率、聚焦深度和生产方法。
