Boston Scientific Precision Montage MRI Informacion Para Medicos página 17

Recommended separation distances between portable and mobile RF communications
equipment and the Precision Montage MRI Spinal Cord Stimulator System
The Precision Montage MRI Spinal Cord Stimulator System is intended for use in an electromagnetic
environment in which radiated RF disturbances are controlled. The customer or the user of the
Precision Montage MRI Spinal Cord Stimulator System can help prevent electromagnetic interference
by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the Precision Montage MRI Spinal Cord Stimulator System as recommended below,
according to the maximum output power of the communications equipment.
Rated maximum
output power of
transmitter
RF emissions 150 kHz to 80 MHz
CISPR 11
W
Outside ISM and
Amateur radio
0.01
0.1
1
10
100
For transmitters operating below 150 kHz (RFID devices such as access control devices), the
recommended separation distance is at least 1.17 m. For transmitters rated at a maximum output
power not listed above, the recommended separation distance d in meters (m) can be estimated using
the equation applicable to the frequency of the transmitter, where P is the maximum output power
rating of the transmitter in watts (W) according to the transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
Separation distance according to frequency of transmitter (meters)
150 kHz to 80 MHz
d = 1.2 √P d = 0.58 √P
Inside ISM and
Amateur radio
bands
0.12
0.37
1.2
3.7
12
80 MHz to
800 MHz
d = 0.35 √P
bands
0.06 0.04
0.18 0.11
0.58 0.35
1.8 1.1
5.8 3.5
Precision Montage™ MRI System Information for Prescribers
Safety Information
800 MHz to
80 GHz
d = 0.70 √P
0.07
0.22
0.70
2.2
7.0
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