Flachskampf F A, Hoffmann R, Verlande M, Schneider W, Ameling W, Hanrath P
Med. Klinik I, University of Aachen (RWTH), Germany.
Eur Heart J. 1992 Sep;13(9):1201-6. doi: 10.1093/oxfordjournals.eurheartj.a060338.
the prototype of a transoesophageal echocardiographic transducer with a rotatable cross-sectional scanning plane underwent initial evaluation.
the 5 MHz, phased array, 64 element transducer is incorporated into a 16 by 11 by 40 mm echoscope tip. The instrument also has pulsed wave and colour flow Doppler capabilities. Exterior controls allow continuous mechanical rotation of the scanning plane from 0 degree, corresponding to the conventional transverse plane, through 180 degrees, thereby encompassing all possible planes.
103 patients underwent examination without complications; two additional patients were excluded because of difficulty in swallowing the probe. Advantages include precise alignment of aortic valve long- and short-axis views, long-axis views of the ascending aorta (mean visualized length: 6 cm), and full scanning of the entire circumference of the mitral valve and the left ventricle. Separation of paravalvular and transvalvular leakage in prosthetic valves is distinctly improved.
multiplanar transoesophageal imaging is feasible and increases the diagnostic yield, especially in mitral and aortic pathology and in the assessment of left ventricular wall motion. Three-dimensional reconstruction is an attractive potential application.
对一种具有可旋转横截面扫描平面的经食管超声心动图换能器原型进行了初步评估。
将5兆赫、相控阵、64阵元的换能器集成到一个16×11×40毫米的超声探头尖端。该仪器还具备脉冲波和彩色血流多普勒功能。外部控制装置可使扫描平面从与传统横向平面相对应的0度开始连续机械旋转180度，从而涵盖所有可能的平面。
103例患者接受了检查，无并发症发生；另有2例患者因吞咽探头困难而被排除。优点包括主动脉瓣长轴和短轴视图的精确对齐、升主动脉的长轴视图（平均可视长度：6厘米）以及二尖瓣和左心室整个圆周的全面扫描。人工瓣膜瓣周漏和瓣叶漏的区分明显改善。
多平面经食管成像可行且能提高诊断率，尤其是在二尖瓣和主动脉病变以及评估左心室壁运动方面。三维重建是一个有吸引力的潜在应用。
