The HAMILTON-MR1 ventilator passed all Coherent Noise testing inside the MR scan room in the Primary Children’s Hospital, Salt Lake City, Utah / USA.
The Coherent Noise test was designed by GE Healthcare (the manufacturer of the MR systems used at Primary Children’s Hospital) to detect the presence of external electromagnetic frequencies inside the MR scan room, which are within the operational bandwidth of the MR system electronics, and thus have the potential to interfere with the diagnostic quality of the MR imaging. The test serves to establish a baseline for acceptable levels of electromagnetic interference within the MR scan room.
The HAMILTON-MR1 passed all coherent noise testing with adjustment to the placement of the device. In the 3.0T and 1.5T environment the best placement for the ventilator using adult or high load patient may be at the foot of the bed approximately 2 meters from the scanner opening. The ventilator performed all breaths with no alarms or other breath delivery issues at both the low and high load settings.
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