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GaussAlert™ Specifications
Standard Factory Preset Alarm Thresholds:
Audio Alarm Typical Sound Pressure:
Audio Alarm Frequency:
Typical Battery life:
Sensor Type:
MR Signal-to-Noise Ratio and Artifact Dimension Analysis
In testing with gradient and radiofrequency (RF) intensive scan sequences provided by scanner
manufacturers according to IEC 60601-2-33, a less than 0.2 cm geometric difference was observed in a
spherical, Bayol-oil phantom. Measured Signal to Noise Ratio (SNR) losses were under 20%.
Images were analyzed using the software OsiriX v.3.8.1 for quantitative analysis. Geometric dimensions of
the phantom were measured to assess any geometric distortion, and these values were compared between
the scans with and without the INOmax DS
were quantitatively analyzed where geometric dimensions were measured to assess geometric distortion and
the signal-to-noise ratio was calculated. These values were compared between scans that were conducted
with and without the INOmax DS
The INOmax DS
Plus MRI compatibility test results are as follows:
IR
1.5 T
Artifact
Dimensional
Analysis
3 T
1.5 T
Image Quality
Signal-to-Noise
ratio analysis
3 T
The operation of the INOmax DS
acquired image quality with respect to signal-to-noise ratio and geometric distortion when using sequences
that are expected to be more susceptible to RF and gradient artifacts.
The test results presented here were obtained with the INOmax DS
Note:
on battery power.
7-4
Plus MRI system present. Images of the spherical phantom
IR
Plus MRI system present in the MR scanner room.
IR
The maximum dimensional change in images acquired during the operation of
the INOmax system was 0.12 cm
The maximum dimensional change in images acquired during the operation of
the INOmax system was 0.11 cm
The S/N change was -16% to +2% compared to images without the MR
Conditional INOmax DS
IR
The S/N change was -18% to +1% compared to images without the MR
Conditional INOmax DS
IR
Plus MRI in the MR scanner room testing showed limited effects on the
IR
100 Gauss (10mT)
92dB (A) at 24 inches
2900 Hz +/- 250Hz
5 years
Mechanical with panoramic uniform sensitivity
Plus MRI system present.
Plus MRI system present.
Plus MRI operating
IR
Part No. 20568 Rev-02
2015-08
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