This edition includes new information on quality assessment, patient safety, the electronic medical record, and new techniques and medications.

这版包括关于高品性评价，病患安全，电子医学记录和新技术和药物的新讯息。

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Here medical Electronic methods and techniques are mainly introduced to detect, analyse and extract feature for human medical ultrasound signals.

本文首先简要地介绍了医学电子学中人体超声信号的检测、处理及其特征提取所采用的方法及其技术特点。

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