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首页> 外文期刊>Digestive endoscopy: official journal of the Japan Gastroenterological Endoscopy Society >New techniques and future perspective of EUS for the differential diagnosis of pancreatic malignancies: contrast harmonic imaging.
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New techniques and future perspective of EUS for the differential diagnosis of pancreatic malignancies: contrast harmonic imaging.

机译：EUS鉴别诊断胰腺恶性肿瘤的新技术和未来展望：对比谐波成像。

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摘要

Although endoscopic ultrasonography (EUS) has the advantage over other imaging methods in that it is possible to obtain high resolution images of the pancreas, it is limited in its ability to characterize pancreatic masses. Contrast-enhanced power Doppler ultrasonography suffers from several limitations such as blooming artifacts, poor spatial resolution, low sensitivity to slow flow and high sensitivity to motion artifacts. Recently, EUS system specific for contrast harmonic imaging has been developed. The use of this EUS system enabled us to observe images of microcirculation and parenchymal perfusion without Doppler-related artifacts in the pancreas. Contrast-enhanced harmonic EUS could diagnose pancreatic carcinomas as hypovascular masses with a high sensitivity (89-96%) and specificity (64-88%). Contrast-enhanced harmonic EUS also discriminates mural nodules from mucous clots in the intraductal papillary mucinous neoplasms.
机译：尽管内窥镜超声检查（EUS）相对于其他成像方法具有优势，因为它可以获取胰腺的高分辨率图像，但是其表征胰腺肿块的能力受到限制。对比增强的功率多普勒超声检查有一些局限性，例如模糊的伪影，空间分辨率差，对慢速流动的低灵敏度和对运动伪影的高灵敏度。最近，已经开发出专门用于对比谐波成像的EUS系统。使用该EUS系统使我们能够观察到微循环和实质灌注的图像，而胰腺中没有多普勒相关的伪影。对比增强的谐波EUS可以高灵敏度（89-96％）和特异性（64-88％）诊断胰腺癌为血管下肿块。对比增强的谐波EUS还可以将导管内乳头状黏液性肿瘤中的黏液凝块与壁上的结节区分开。

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