Yoshimoto K
Third Dept. of Internal Medicine, Toho University School of Medicine, Tokyo, Japan.
Endoscopy. 1998 Aug;30 Suppl 1:A145-8. doi: 10.1055/s-2007-1001499.
The usefulness of the ultrasound 3 D imaging system (3 D-EUS) is reported. 3 D-EUS using an ultrasonic probe has been introduced as a result of the developments in 3 D-EUS (EU-IP) by Olympus. The 3 D-EUS image was reconstructed by composing the radial and linear images produced by 40 slices of radial image, which were obtained by spiral scanning of the ultrasonic probe in the sheath. This system also allowed numerous functions, such as multifreeze, high-resolution images, measurement etc. for a definitive diagnosis.
In the past three years, 190 lesions of the gastrointestinal tract were examined by 3 D-EUS. The rate of correct approach to the lesions was 89% (overall). The most inappropriate approach was a result of the oblique probe approach, or lesions sited in difficult positions. The radial, linear and 3 D images were generally good. Pulsation, deep attenuation and small lesions caused the worst images. Most small lesions were imaged thoroughly with radial imaging and so no significant changes can be seen with 3 D images. High-resolution images were more precise and finer than with plain EUS.
3 D-EUS contributed more useful and finer images for the EUS examinations. Gastrointestinal lesions are generally well displayed and recognizable. There are still a few problems to be solved for proper imaging, but there should be positive advances in diagnostic ability with the development of this system.
报告了超声三维成像系统（3D-EUS）的实用性。由于奥林巴斯公司开发了3D-EUS（EU-IP），使用超声探头的3D-EUS得以问世。通过在护套内对超声探头进行螺旋扫描获得40层径向图像，将这些径向图像和线性图像合成后重建出3D-EUS图像。该系统还具备多种功能，如多次冻结、高分辨率图像、测量等，有助于明确诊断。
在过去三年中，对190例胃肠道病变进行了3D-EUS检查。对病变的正确诊断率为89%（总体）。最不合适的诊断结果是由于探头倾斜或病变位置特殊。径向、线性和3D图像总体良好。搏动、深度衰减和小病变导致图像质量最差。大多数小病变通过径向成像能清晰显示，因此3D图像未见明显变化。高分辨率图像比普通EUS更精确、更清晰。
3D-EUS为EUS检查提供了更有用、更清晰的图像。胃肠道病变通常能很好地显示和识别。在适当成像方面仍有一些问题有待解决，但随着该系统的发展，诊断能力应该会有积极进展。
