Patient MRI Options with VNS Therapy™
MRI Scans are safe with VNS Therapy provided specific guidelines are followed
Learn more about MRI options for your patients
MRI with VNS Therapy Manual
| Group A | Group B | Group B | |
|---|---|---|---|
|
DemiPulse™ Model 103 |
DemiPulse™ Model 103 AspireHC™ Model 105 AspireSR™ Model 106 SenTiva™ Model 1000 AND Generator Location - NOT in the upper left chest at or above armpit (above 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 Magnet Strength | 1.5T or 3T | 1.5T or 3T | 1.5T or 3T |
| Scanner Type | Horizontal field, cylindrical closed-bore | Horizontal field, cylindrical closed-bore | Horizontal field, cylindrical closed-bore |
| 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 |
| Max Spatial 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 only | Transmit-receive head or extremity coils only |
| Max SAR | Transmit head coil: 3.2 W/Kg Transmit body coil: 2.0 W/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 (Models 1000 and 1000-D only) |
Stimulation OFF Sensing OFF* *for select models with AutoStim mode Optional device features OFF (Models 1000 and 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/Kg
NOTE: MRI scans using a body coil have not been approved in all geographies.
Always review the most current labeling prior to performing an MRI scan.
For MRI Safety information, refer to MRI Instructions For Use.
