超声波扫描仪B / W - NSL N5 Novadex（中国）

超声波扫描仪（也称为诊断超声谱系orultrasonography) is a诊断成像基于应用的技术ultrasound。它用于看到内部体结构，如tendons那肌肉那joints, blood vessels, and internal organs. Its aim is often to find a source of a disease or to exclude anypathology。The practice of examiningpregnantwomen using ultrasound is called产科超声波那and is widely used.

超声是sound waves和frequencies这比人类（> 20,000赫兹）高的那些。超声图像，也称为超声图，是通过将超声波的脉冲发送到的组织用一个probe。声音回声关闭组织;用不同的组织反映了不同程度的声音。将这些回波记录并显示为对操作员的图像。

Many different types of images can be formed using sonographic instruments. The most well-known type is a B-mode image, which displays the acoustic impedance of a two-dimensional cross-section of tissue. Other types of image can displayblood flow那motion of tissue over time, the location of blood, the presence of specific molecules, the组织刚度， 或者三维区域的解剖学。

Compared to other prominent methods of medical imaging, ultrasound has several advantages. It provides images in real-time, it is portable and can be brought to the bedside, it is substantially lower in cost, and it does not use harmful电离辐射。超声检查的缺点包括其视野的各种限制，例如对患者合作的需求，对体质的依赖，难以背后的成像结构骨和空气，以及技术操作员的必要性，通常是训练有素的专业人士。