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MRI常见问题及维修保养技术分析

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发表于 2020-10-21 12:38:02 | 显示全部楼层 |阅读模式

                    

                    

                    
                    
                    <section data-role="outer" label="Powered by gulangu" style="max-width: 100%; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 23.2727px; box-sizing: border-box !important; word-wrap: break-word !important; background-color: rgb(255, 255, 255);"><section class="" data-tools="gulangu" data-id="39" style="max-width: 100%; box-sizing: border-box; word-wrap: break-word !important;"><section style="margin-top: 0.8em; margin-bottom: 0.5em; max-width: 100%; box-sizing: border-box; overflow: hidden; word-wrap: break-word !important;"><p style="padding-right: 10px; padding-left: 10px; max-width: 100%; box-sizing: border-box; min-height: 1em; height: 36px; display: inline-block; color: rgb(255, 255, 255); font-weight: bold; line-height: 36px; vertical-align: top; word-wrap: break-word !important; background-color: rgb(239, 112, 96);">MRI维修解析</p><section style="max-width: 100%; box-sizing: border-box; display: inline-block; height: 36px; vertical-align: top; border-left-width: 9px; border-left-style: solid; border-left-color: rgb(239, 112, 96); word-wrap: break-word !important; border-top-width: 18px !important; border-top-style: solid !important; border-top-color: transparent !important; border-bottom-width: 18px !important; border-bottom-style: solid !important; border-bottom-color: transparent !important;"></section></section></section></section><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">MRI</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">即核磁共振成像仪器,属于医院大型的医学影像设备,该设备提供的信息量不仅大于医学影像学中其它的成像术,而且和已有的成像术有很大的不同,因此对于诊断临床疾病具有着非常大的优势。为了减少</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">MRI</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">的故障率,提高使用的效率,所以,在平时进行积极有效的维护和保养工作,有着十分重要的意义。</span></span></p><p style="margin-bottom: 0.1px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">1 MRI</span></strong><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: 宋体; box-sizing: border-box !important; word-wrap: break-word !important;">常见的故障与排除</span></strong></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">1.1&nbsp;</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">网络故障</span></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">MRI</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">在使用机器时经常出现死机现象,若提示网络冲突的时候,要检查网络主机的</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">IP</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">地址和医院里的网络是否存在冲突,通常在变换主机的地址以后,就会排除掉该类故障的问题。</span></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">1.2&nbsp;</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">床进出故障</span></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">如果床进出时有较大噪音,则要观察床高是否属于正常值,可以运用手动或者机械来调整床高度,回复到上止位以后正常。如果床无法进出,则可能床水平运动皮带坏或者脱落。通常更换以后正常。</span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">如果头颅无法扫描,且图像信噪比差,但患者的腰椎和膝关节等部位扫描结果正常,应当更换头线圈,如果在扫描时无法显示出图像,出现</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">IMAGE</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">的故障,在重新启动以后仍无法恢复,则需要重新安装</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">IMAUE</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">系统,从而实现机 器的显示图像恢复。</span></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">1.3&nbsp;</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">水冷机组的故障</span></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">首先是水冷机组中压缩机氟利昂的添加。在春夏季节交替时,气温会逐渐升高,当水温高于</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">20°</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">时,可以检查出压缩机中的氟利昂压力,如果加上氟利昂以后,发现水温偏高,一般是因为水循环的水量达不到,此时要再检查水循环部分,并由此判别是否因为水循环的过滤器受到阻塞。</span></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">通常将过滤器拆下清洗以后,就可以正常使用。再就是压缩机里高压保护开关的故障。若遇上机组报修故障以后,应当重新开启工作,此时压缩机的高压部分会一直向上冲,当遇上压力,保护开关就会断开。通常是因为压缩机的高压部分的风机无法工作,才会导致这种状况,由于风机里的电路受到压缩机高压的控制器控制,</span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">此时可把控制器的两端短接以后,机器便可以正常使用,在更换控制器以后,该类故障都可以解决。</span></p><p style="margin-bottom: 0.1px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">2&nbsp;</span></strong><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: 宋体; box-sizing: border-box !important; word-wrap: break-word !important;">加强</span></strong><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">MRI</span></strong><strong style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: 宋体; box-sizing: border-box !important; word-wrap: break-word !important;">设备的维护和保养措施</span></strong></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">2.1&nbsp;</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">实行</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">“</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">三定</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">”</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">制度管理,对于故障要及时进行维修</span></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">落实</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">“</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">三定</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">”</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">管理制度,主要是针对</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">MRI</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">设备器材实行定机和定人以及定岗位的管理制度;核磁共振成像仪要求有专门的操作人员,经过严格的培训与考试,在获得</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">“</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">操作合格证</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">”</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">以后,才能够进行相关的设备的操作;如果是新购进的或者是经过大修过的设备,一定要经过正常的磨合期的试行运转,只有这样,才能有效延长设备的使用寿命;另外,还要严格地实施安全交底的制度,并以此来确保</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">MRI</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">设备使用安全性与使用寿命。</span></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">2.2&nbsp;</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">重视机房部分的维护和保养</span></span></p><p style="margin-bottom: 0.1px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">MRI</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">系统的用电应当保证专线专用的变压器,还应当配置稳压电源与不间断电源,要密切观察使用配电的各种指示灯的工作状况与报警装置。防尘净化属于保证机器最佳散热效果的关键,</span></span></p><p style="margin-bottom: 0.1px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">所以要定期地使用清洗剂来清洁因为静电感应而积存在线路板表面上的灰尘,并经常查看散热的风扇是不是正常运转。还要定期地清洗空气过滤网,以此来保证机柜内所产生的热量能够及时地和顺利地排出去。维修人员在对磁共振检修时,要使用正确的方法,因为如果检测方法使用不当时,就会损坏正在正常运行的电路或者检测仪器,这样检测出结果不能保持准确。</span></p><p style="margin-bottom: 0.1px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;">最后,还要求维修人员检查是否存在着线路板的接口因为受到不同的温度或者长时间的关机等因素的影响而导致发生松动现象,以及检查谱仪、梯度以及射频部分的电源箱内使用的大电流接头是否存在着松动的现象。</span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">2.3&nbsp;</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">确保</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">MRI</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">运行环境的稳定性</span></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">MRI</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">设备显示的图像质量与周围的环境密切相关。工作人员在对设备安装调试完成以后,针对磁体的较近距离范围</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">(</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">指</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">15</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">米范围以内</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">)</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">的任何改变,都会或多或少地影响到磁场的均匀程度,由此而会降低图像的质量。</span></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">因此上,应该尽可能地避免在安装调试结束以后,在核磁的机房周围增设大型的建筑、停车场以及大型设备等一些铁磁性强的物体或者环境,还要尽量避免增加有高频率的变压器、输电线等能够产生出较大功率的电磁辐射的设备而对</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">MRI</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">设备产生影响。</span></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">2.4 MRI</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">使用与保养维护优化</span></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">为了更好地进一步提高核磁共振成像仪的管理水平,并提高</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">MRI</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">设备的工作效率,尽可能减少设备维修的费用,就有必要地加强使用和保养以及维修人员之间的信息反馈,然后将核磁共振成像仪的保养纳入到预防性维修的体系当中,所以要培养维修人员具备独立的完成抢修的任务,以及采取应急修理的能力,争取做到</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">“</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">一专多能</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">”</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">的人才,加强</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">MRI</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">设备的操作和维修人员的管理,从而取得很好的设备管理效果。</span></span></p><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="max-width: 100%; font-size: 14px; box-sizing: border-box !important; word-wrap: break-word !important;"><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">不管是预防性的维修还是排障性的维修,都应当首先对</span><span style="max-width: 100%; font-family: Helvetica, sans-serif; box-sizing: border-box !important; word-wrap: break-word !important;">MRI</span><span style="max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;">设备的使用状况作出迅速准确的诊断。可是因为手维护人员的实践经验和技术素质水平限制,常常因为判断不够准确,结果导致对及其部件或者总成件的错误拆卸和安装,很有可能会导致一些零件的过早性更换,结果产生不必要的经济损失,并且影响到设备的使用。</span></span></p><hr  /><p style="margin-bottom: 15px; max-width: 100%; min-height: 1em; color: rgb(62, 62, 62); font-family: 微软雅黑; font-size: 16px; white-space: normal; line-height: 1.5em; box-sizing: border-box !important; word-wrap: break-word !important; background: white;"><span style="font-size: 14px; max-width: 100%; box-sizing: border-box !important; word-wrap: break-word !important;"></span><span style="font-size: 10px;">广告</span><img data-s="300,640" data-type="jpeg" src="http://mmbiz.qpic.cn/mmbiz_jpg/A1DicCH9Vl6OBiatzauoODMYrFWfWByiabCZ1H99TKmSjrX7BRZbRvrOic3iaqyxe79ib8ACPHweqKKibUj2Og6jGnBGQ/0?wx_fmt=jpeg" data-ratio="0.43353293413173655" data-w="835"  /></p><p style="text-align: center; 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