超声图像干扰原因分类及其处理措施

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                    <section><section powered-by="gulangu"><section><section><p><img src="image/20201019/78794d23df2ee77a38ff09cf91e8abd9_1.gif" /></p></section></section></section><section powered-by="gulangu"><section><section> <section> <section powered-by="gulangu"><section><section><p>超声图像干扰概述</p></section></section></section> </section> </section></section></section><section powered-by="gulangu"><section><section><p>&nbsp; &nbsp; &nbsp; 由于超声设备探头的高灵敏度以及整机电路具有很宽的通频带和较高的增益，在实际使用过程中，极易受到各种电磁场的干扰，使显示图像模糊不清，甚至不能正常工作，以致影响医生对病人疾病的正确诊断。</p><p>&nbsp; &nbsp; &nbsp; 对客户端超声设备发生的多例图像干扰案例以及处理措施进行分析，干扰电磁场进入超声设备的途径一般不外乎以下两种：一是从探头，屏蔽不良的连线、接头（B、C处）,机壳等处窜入；二是通过电源线路引入（A处）</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/c9413cf0e74574f200aa316fe3603788_2.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section> <section> <section powered-by="gulangu"><section><section><p>干扰分类---</p><p>机器本身问题—探头、接收通道，更换相应的配件</p></section></section></section> </section> </section></section></section><section powered-by="gulangu"><section><section><p>1、超声探头干扰（DC-6）</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/2599b72215dd8a7982d13ef6c3e3882a_3.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>原因一：探头线缆屏蔽层断裂，致使干扰电磁场被引入出现图像干扰问题。</p><p>改进措施： 2010.2月改用耐拉拽、弯曲强度更高的探头线缆。</p><p>原因二：探头屏蔽线与信号地方式不合理。</p><p>改进措施：改善探头蔽屏线的连接方式。</p><p>2、超声设备接收模块故障引起的干扰(DC-6)</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/faf863f5ae8bb5c5c6dc105839f8fd65_4.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>现象：上图干扰会有规律的从左到右滚动</p><p>原因：模拟接收通道器件损坏</p><p>处理措施：更换放大板</p></section></section></section><section powered-by="gulangu"><section><section><p>3、DC-6干扰</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/eec7b9cf97e65dbe5150c42c01727408_5.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/3affdd110841abdd287b03db61157682_6.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>现象：二维图像波纹干扰；彩色取样框内条状干扰；</p><p>处理措施：更换发射板，故障解决</p></section></section></section><section powered-by="gulangu"><section><section> <section> <section powered-by="gulangu"><section><section><p>干扰分类---</p><p>电源插座接触不良，更换好的插座</p></section></section></section> </section> </section></section></section><section powered-by="gulangu"><section><section><p>1、超声设备电源线与插座接触不良引起的干扰（DC-6）</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/9a67209218ca138112e63b097172f8a3_7.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>现象：干扰束会随机出现在图像的不同区域</p><p>原因：电源线与电源插座接触不良，电极易产生电离火花引入电磁干扰，造成图像干扰现象。</p><p>处理措施：更换插座孔或新插排。</p></section></section></section><section powered-by="gulangu"><section><section><p><br  /></p></section></section></section><section powered-by="gulangu"><section><section> <section powered-by="gulangu"><section><section><p>欢</p></section></section></section> </section><section> <section powered-by="gulangu"><section><section><p>迎</p></section></section></section> </section><section> <section powered-by="gulangu"><section><section><p>关</p></section></section></section> </section><section> <section powered-by="gulangu"><section><section><p>注</p></section></section></section> </section></section></section><section powered-by="gulangu"><section><section><p><br  /></p></section></section></section><section powered-by="gulangu"><section><section> <section powered-by="gulangu"><section><section><p><img src="image/20201019/bb0fcbc20e782422f266c5eef8648ca0_8.jpg" /></p></section></section></section> </section><section> <section powered-by="gulangu"><section><section> </section></section></section> </section><section> <section powered-by="gulangu"><section><section><p>关注我们</p><p>一起涨姿势！</p></section></section></section> </section></section></section></section>