Zhou YC, Guo WX. Ultrasound medicine. Beijing:Science and Technology Literature Publishing House, 2003:902.

周永昌，郭万学。超声医学。北京：科学技术文献出版社，2003：902。

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As an important application in medical ultrasound, the diagnostic ultrasound plays a great role with its advantages in safety, speed and real-time, and has an extensive use in clinical medicine.

超声诊断技术作为超声医学的一个重要应用，以其特有的安全、快速、实时的优势发挥着巨大的作用，并已在临床医学中得到广泛应用。

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Because ultrasound does not use ionizing radiation, unlike radiography, CT scans, and nuclear medicine imaging techniques, it is generally considered safer.

超声由于不使用电离辐射，与摄片，CT扫描和核医学成像技术，它通常被认为更安全。

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They showed that Vytorin, a combination of the generic cholesterol drug Zocor and the newer medicine Zetia, did not reduce ultrasound readings of thickness in the neck artery any more than Zocor alone.

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Focused ultrasound should be one of the fastest-growing procedures in medicine, according to its supporters.

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The heart function can be assessed with an ultrasound of the heart called an echocardiogram or with a nuclear medicine test.

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