New power supply options are now available to power the Model 1030’s ERT Module and the Model 1025’s ECG/T Module in many MR installations. Facilities that have a magnet in a RF shielded room can use these Power Supplies in place of the Battery Pack.
The Power Supply converts 12 VDC to 6 VDC with isolated grounds. It has a small isolation transformer that operates in a magnetic field smaller than 100 gauss. The fringe field of a magnetically shielded MR magnet is usually less than 100 gauss 2 to 3 feet from the magnet bore. Power is delivered to the ERT Module using a long RF shielded power supply cable.
The Model 1030 ERT Module Power Supply is shown below. The Power Supply for the older Model 1025 ECG/T Module has a similar configuration.