福禄克寻线仪F2052设备实测
新品上新实测 | F2052寻线仪定位电缆沟和地埋线缆位置与对应设备。文章来源于福禄克公司。福禄克新出的寻线仪F2052，之前有使用过福禄克的2042，遇到线穿过铁管之后信号被干扰问题，无法继续跟踪。让我们来看看新款的2052是否有更好的表现。附视频1的测试过程：
This test method is one of those required to determine if the presence of a medical device may cause injury to individuals during an MR examination or in the MR environment. Other safety issues which should be addressed include, but may not be limited to: magnetically induced torque (see Test Method F2213) and radiofrequency (RF) heating (see Test Method F2182). The terms and icons in Practice F2503 should be used to mark the device for safety in the magnetic resonance environment.
第一步：开箱
FLUKE2052寻线仪外箱看上去很坚固，而且气密性做的很好。里面有一个发射器，一个接收器。还有一个电流钳以及其他测试线，测试鳄鱼夹配件。
If the maximum magnetically induced displacement force for the specified magnetic field conditions (see Appendix X3) is less than the force on the device due to gravity (its weight), it is assumed that any risk imposed by the application of the magnetically induced force is no greater than any risk imposed by normal daily activity in the Earth’s gravitational field. This statement does not constitute an acceptance criterion; it is provided as a conservative reference point. It is possible that a greater magnetically induced displacement force can be acceptable and would not harm a patient or other individual in a specific case.
If the maximum magnetically induced displacement force for the specified magnetic field conditions (see Appendix X3) is less than the force on the device due to gravity (its weight), it is assumed that any risk imposed by the application of the magnetically induced force is no greater than any risk imposed by normal daily activity in the Earth’s gravitational field. This statement does not constitute an acceptance criterion; it is provided as a conservative reference point. It is possible that a greater magnetically induced displacement force can be acceptable and would not harm a patient or other individual in a specific case.
第二步：连接发射器
将发射器的负极使用黑色鳄鱼夹接地，正极用红色夹子连接到加气机一路电源的火线。寻找的线路火线。
For instance, in the case of an implanted device that is or could be subjected to a magnetic displacement force greater than the force due to gravity, the location of the implant, surrounding tissue properties, and means of fixation within the body may be considered. For a non-implanted device with a magnetically induced force greater than the gravitational force, consideration should be given to mitigate the projectile risk which may include fixing or tethering the device or excluding it from the MR environment so that it does not become a projectile.
For instance, in the case of an implanted device that is or could be subjected to a magnetic displacement force greater than the force due to gravity, the location of the implant, surrounding tissue properties, and means of fixation within the body may be considered. For a non-implanted device with a magnetically induced force greater than the gravitational force, consideration should be given to mitigate the projectile risk which may include fixing or tethering the device or excluding it from the MR environment so that it does not become a projectile.
第三步：打开发射器，发出信号
按下“HI”高信号模式，看到发射器LED灯闪烁并发出连续蜂鸣。
The maximum static magnetic field strength and spatial field gradient vary for different MR systems. Appendix X3 provides guidance for calculating the allowable static magnetic field strength and spatial field gradient.
The maximum static magnetic field strength and spatial field gradient vary for different MR systems. Appendix X3 provides guidance for calculating the allowable static magnetic field strength and spatial field gradient.
第四步：打开接收器，选择精密寻线模式，通过寻线查找对应设备
移动接收器时，可以看到明显的信号大小变化。我们可以通过对接收器灵敏度的调节和信号指示，沿着线路最终找到对应的设备。
This test method alone is not sufficient for determining if a device is safe in the MR environment.
This test method alone is not sufficient for determining if a device is safe in the MR environment.
第五步：通过接收器，在多根线中查找对应线缆
因为这些线缆都在一起，很容易产生互相干扰。最好是用手把要测试的线缆和其他线缆分出一端距离，这样挨个排查信号，找到信号反应最强的那一根。
medical device; metals (for surgical implants and medical devices); MRI (magnetic resonance imaging); MR safety;
medical device; metals (for surgical implants and medical devices); MRI (magnetic resonance imaging); MR safety;
深圳银飞电子有售Fluke2052寻线仪
