Patient MRI Options
MRI Scans are safe with VNS Therapy™ provided specific guidelines are followed1
Learn more about MRI options for your patients
| Group A2 | Group B2 | Group B2 | |
|---|---|---|---|
DemiPulse™ Model 103 | DemiPulse™ Model 103 AspireHC™ Model 105 AspireSR™ Model 106 SenTiva™ Model 1000 SenTiva DUO™ Model 1000-D AND Generator Location - NOT in the upper left chest at or above armpit (above anterior rib 4) | Model 100C, Model 101, Pulse™ Model 102, Pulse Duo™ Model 102R, DemiPulse Duo™ Model 104 (Applicable for all implant locations) | |
MR Conditional | Yes | Yes | Yes |
| Static Magnetic Field Strength | 1.5T or 3T | 1.5T or 3T | 1.5T or 3T |
| Scanner Type | Horizontal field, cylindrical closed-bore clinical system for hydrogen proton imaging | Horizontal field, cylindrical closed-bore clinical system for hydrogen proton imaging | Horizontal field, cylindrical closed-bore clinical system for hydrogen proton imaging |
| Operating Mode | Normal Operating Mode | Normal Operating Mode | Normal Operating Mode* |
| Exclusion Zone | Body coil: C7-L3 Transmit-receive head or extremity coil: C7-T8 | C7-T8 | C7-T8 |
| Spatial Field Gradient | ≤3000 Gauss/cm | ≤3000 Gauss/cm | ≤3000 Gauss/cm |
| Max Slew Rate | 200 T/m/s | 200 T/m/s | 200 T/m/s |
| RF Coil | Transmit: Body coil or Transmit-receive head or extremity coils Receive: No Restrictions | Transmit-receive head or extremity coils | Transmit-receive head or extremity coils |
| Max SAR | Transmit head coil: 3.2 kg Transmit body coil: 2.0 kg | Transmit-receive head coil: 3.2 W/kg | Transmit-receive head coil: 3.2 W/Kg |
| System Programming | Stimulation OFF Sensing OFF* *for select models with AutoStim mode Optional device features OFF (Model 1000 and Model 1000-D only) | Stimulation OFF Sensing OFF* *for select models with AutoStim mode Optional device features OFF (Model 1000 and Model 1000-D only) | Stimulation OFF |
| Exposure Time | Transmit head or extremity coil: No restrictions Transmit body coil: ≤15 minutes of active scan time within a 30 minute window | Transmit-receive head or extremity coil: No restrictions | Transmit-receive head or extremity coil: No restrictions |
| Additional Restrictions | Transmit head or extremity coil: none Transmit body coil: Circularized Polarized mode only | None | None |
*Normal Operating Mode: Transmit Head Coil: 3.2 W/Kg, Transmit Body Coil: 2.0 W/Kg, Transmit/Receive head coil: 3.2 W/Kg2
NOTE: MRI scans using a body coil have not been approved in all geographies.
Always review the most current labelling prior to performing an MRI scan.2
For MRI Safety information, refer to MRI Instructions For Use.