CT机维护与保养须知

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                    <p style=""><strong style="max-width: 100%; color: rgb(68, 68, 68); font-family: 宋体; line-height: 28px; text-align: justify; white-space: normal; word-wrap: break-word !important; box-sizing: border-box !important;"><img src="http://mmbiz.qpic.cn/mmbiz/cNuNdEZ2BK7eIOv9Picyop7PMgk4WxqGic2j5DxUL3wUSibm7NHtElM54LKicnibUXq4tOGwibRI4usKjpCZN6JKgQkQ/0" data-ratio="0.11857707509881422" data-w="" width="auto" src="http://mmbiz.qpic.cn/mmbiz/cNuNdEZ2BK7eIOv9Picyop7PMgk4WxqGic2j5DxUL3wUSibm7NHtElM54LKicnibUXq4tOGwibRI4usKjpCZN6JKgQkQ/0" style="word-wrap: break-word !important; box-sizing: border-box !important; width: auto !important; visibility: visible !important;"  /></strong><img src="http://mmbiz.qpic.cn/mmbiz/A1DicCH9Vl6NwvEPpQ9UicLduKRnAq5a7oT7J6rV4BiaM0O5CnAW0ZZyxpq3KvABHwMoicSyTww9kELzpPPvSwxQbA/0" data-ratio="0.7509881422924901" data-w="" width="698px" src="http://mmbiz.qpic.cn/mmbiz/A1DicCH9Vl6NwvEPpQ9UicLduKRnAq5a7oT7J6rV4BiaM0O5CnAW0ZZyxpq3KvABHwMoicSyTww9kELzpPPvSwxQbA/0" style="word-wrap: break-word !important; box-sizing: border-box !important; width: 698px !important; visibility: visible !important;"  /></p><p style="">CT装置是由X线发生器、计算机系统、检查床、自动控制部分等组成。是一种技术先进、使用广泛的大型医疗设备，是医院不可缺少的临床诊断设备。因此，如何保证CT设备处于最佳的诊疗状态，正确使用机器，精心维护与保养，以确保机器开机率是极其重要的。CT机对电源供应、环境温、湿度、防尘净化、球管的日常维护等均有较高的要求，这些因素的好坏，是关系到机器能否正常工作的重要因素。</p><p style=""><span style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important; color: rgb(0, 112, 192);"> (1)</span><span style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important; color: rgb(0, 112, 192);"><strong style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important;">电网供电的稳定 </strong></span></p><p style=""><span style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important; color: rgb(12, 12, 12);">电源是保证CT机稳定运行的首要条件</span><strong style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important;"><span style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important; color: rgb(12, 12, 12);">。</span></strong>CT机的电源最好用专线、专用变压器。由于CT机爆光时瞬间电流较大，应避免与电源电压变化大的负载共用，特别是不能和医院中央空调机组共用一个变压器，以防止线路过载引起停电给机器带来不可估量的损害。CT机中的磁盘驱动系统，对电源频率十分敏感，当电源频率波动较大时，转速便会下降，造成读写数据的错误，严重时将使速度保护而停止工作。由于机器的保护系统较多，所以电源电压的忽高忽低都会使机器处在保护状态下。电源电压和频率的不稳定，是导致CT故障的一个重要因素，对于电源电压不稳应加UPS不间断稳压电源。所以在机器安装、机房设计时，就必须按机器厂家技术指标要求做好电源线的布线。</p><p style=""><span style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important; color: rgb(0, 112, 192);">(2)</span><strong style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important;"><span style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important; color: rgb(0, 112, 192);">机房温度、湿度的恒定 </span></strong></p><p style="">①恒温恒湿：CT机对环境温度、湿度的要求，特别是计算机房的要求是有严格规定：温度要保持在20-25℃左右。室内温度过高，CT球管、高压电路散热不畅，会引起机器不工作；湿度要控制在35％-70％左右，但不超过70％为宜，湿度过小，会导致某些材料及结构的几何变形和性能变化，特别是磁盘机，湿度过小会导致盘面变形，过大又会使磁胶变质，磁层脱落，影响其使用寿命。</p><p style="">②防潮保干：CT机位于潮湿的环境时，空气中的水份因达临界温度即凝结并附着于电气元件上，导致电气性能改变，一旦精密机械表面因长期受潮而生锈会降低精密度，电路绝缘性能变低，甚至引起Ｘ线高压放电或击穿，这些因素都会引起机器工作不正常，特别南方地区气候潮湿水雾大，要定时开去湿机除湿，以确保机房的干燥。 3 防尘净化的环境<strong style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important;"> </strong></p><p style=""><strong style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important;"><span style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important; color: rgb(0, 112, 192);">（3）防尘是电气设备的共同要求</span></strong></p><p style="">由于静电感应可使灰尘附着于器件表面，影响散热而改变电气设备性能，加快元器件的老化。而CT机对防尘要求更高，原因当CT机扫描区内有一定量的积尘时，探测器所接收X线量并非真正空气扫描时所接受的X线量，有一定的误差，计算机在信号处理过程中，就会出现偏差，从而出现伪影而影响诊断。还有机器内部的电路板插槽、滑环等精密部件被灰尘覆盖后，则有可能造成打火、短路、接触不良等故障。因此，CT机必须要有一个良好的清洁环境，扫描室、控制室保持清洁，换鞋入内，严禁在室内存放无关的物品。室内注意通风、严格防尘、定期消毒和净化空气。</p><p style=""><strong style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important;"><span style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important; color: rgb(0, 112, 192);">（4）CT球管的日常维护和保养 </span></strong></p><p style="">CT球管是CT设备的中心部件之一，它主要由灯丝、靶、靶轴、管套、高压系统几部分组成，球管工作时，灯丝上通有电流，灯丝电流电子在外加高压系统产生的强大电场作用力的驱动下，高速益处，轰击到球管靶面上，产生X射线。只有当CT球管提供稳定，高质量的x射线，CT的一切功能才能按部就班的进行。所以CT球管的工作环境及状态的日常维护保养显得很重要。</p><p style="">保养内容：</p><p style="">①外部三相电源检测，包括三相电源的相位平衡稳定，不移相及地线的阻值和接地良好与否，定期检查机器接地的可靠性，以防电击。</p><p style="">②高压电缆与球管的接触良好，接触零部件无杂质，每年检查一次。</p><p style="">③房间的湿度，温度保持恒定。</p><p style="">④CT机停止扫描2h以上，必须进行暖机，这样一方面保证了CT图像质量，另一方面有利于延长CT球管的寿命，同时应避免球管在高热的情况下继续曝光。</p><p style=""><br style="max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important;"  /></p><p style="">除上面所讲的外，其它的须坚持每次开机预热30分钟后再进行空气校正，每周校正CT值的准确性，定期作稳定性检测和水模校正，必要时作状态检测。尽量注意不要经常使用过高的扫描条件，图像满足临床诊断要求既可。总之，通过对CT机的日常维护和保养，严格遵守机器操作规程，完全可以将机器的故障率降到最低，提高设备的完好率和使用率。</p><p style=""><img src="http://mmbiz.qpic.cn/mmbiz/rz7R73cuHRrv6jdOCoJeZmYwvEAIoHpY0a7yJL2egiaEokLTpwkIsIRTzTFUic09aEThKHS4hrEcSqU0lAS3tu5g/0" data-ratio="0.14784394250513347" data-w="487" width="auto" src="http://mmbiz.qpic.cn/mmbiz/rz7R73cuHRrv6jdOCoJeZmYwvEAIoHpY0a7yJL2egiaEokLTpwkIsIRTzTFUic09aEThKHS4hrEcSqU0lAS3tu5g/0" style="font-size: 15px; line-height: 26px; text-align: -webkit-center; color: rgb(51, 51, 51); font-family: 宋体; word-wrap: break-word !important; box-sizing: border-box !important; width: auto !important; visibility: visible !important;"  /></p><p style=""><legend style="padding: 0px; max-width: 100%; white-space: normal; color: rgb(51, 51, 51); font-family: 宋体; font-size: 14px; line-height: 24px; orphans: 2; widows: 2; margin: 0px; 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padding: 0px; border: 0px; word-wrap: break-word !important; box-sizing: border-box !important; visibility: visible !important; width: auto !important;"  /><span style="max-width: 100%; margin: 0px; padding: 0px; border: 0px; word-wrap: break-word !important; box-sizing: border-box !important;">联系我哟</span></span></legend><blockquote style="padding: 0px; border: 0px; max-width: 100%; word-wrap: break-word !important; box-sizing: border-box !important;"><p style="margin-top: 0px; margin-bottom: 0px; max-width: 100%; word-wrap: normal; min-height: 1em; white-space: pre-wrap; padding: 0px; border: 0px; box-sizing: border-box !important;"><span style="max-width: 100%; margin: 0px; padding: 0px; border: 0px; color: rgb(255, 192, 0); font-size: 14px; word-wrap: break-word !important; box-sizing: border-box !important;"></span><span style="max-width: 100%; color: rgb(255, 192, 0); margin: 0px; padding: 0px; border: 0px; font-size: 14px; word-wrap: break-word !important; box-sizing: border-box !important;">? </span><span style="max-width: 100%; color: rgb(127, 127, 127); margin: 0px; padding: 0px; border: 0px; line-height: 28px; word-wrap: break-word !important; box-sizing: border-box !important;">定期推送</span><span style="max-width: 100%; color: rgb(255, 192, 0); margin: 0px; padding: 0px; border: 0px; line-height: 28px; word-wrap: break-word !important; box-sizing: border-box !important;">医械资讯</span><span style="max-width: 100%; margin: 0px; padding: 0px; border: 0px; line-height: 28px; word-wrap: break-word !important; box-sizing: border-box !important;"><span style="max-width: 100%; margin: 0px; padding: 0px; border: 0px; word-wrap: break-word !important; box-sizing: border-box !important;"><span style="max-width: 100%; color: rgb(127, 127, 127); word-wrap: break-word !important; box-sizing: border-box !important;">，</span><span style="max-width: 100%; color: rgb(0, 176, 80); word-wrap: break-word !important; box-sizing: border-box !important;">厂家推介</span><span style="max-width: 100%; color: rgb(127, 127, 127); margin: 0px; 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box-sizing: border-box !important;">等诸多优质内容，</span><span style="max-width: 100%; color: rgb(127, 127, 127); margin: 0px; padding: 0px; border: 0px; word-wrap: break-word !important; box-sizing: border-box !important;">最接地气</span><span style="max-width: 100%; color: rgb(127, 127, 127); word-wrap: break-word !important; box-sizing: border-box !important;">、</span><span style="max-width: 100%; color: rgb(127, 127, 127); margin: 0px; padding: 0px; border: 0px; word-wrap: break-word !important; box-sizing: border-box !important;">重价值</span><span style="max-width: 100%; color: rgb(127, 127, 127); word-wrap: break-word !important; box-sizing: border-box !important;">的医疗器械微信平台！关注我们妥妥没错，推广合作联系我呦！</span></span></p></blockquote></fieldset><p style="white-space: normal;"><img data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz/A1DicCH9Vl6MYAEPWTib8tjxcvx0icbN5kq6PvfS6PHyKaMRwicKyXRpyaPRoHgn3OOr1vBKYm6b9vtYp87hJM8nXw/0" data-ratio="0.7835365853658537" data-w="328"  /></p>