MR Conditional
An item that has been demonstrated to pose no known hazards in a specified
MR environment with specified conditions of use. Field conditions that define
the specified MR environment include field strength, spatial gradient, dB/dt
(time rate of change of the magnetic field), RF fields, and SAR. Additional
conditions, including specific configurations of the item, may be required.
MR Conditional devices (for example, RF communications equipment) may
present hazards as well. Observe the manufacturer's operator manual to
avoid potential hazards and injuries.
MR Unsafe
An item that is known to pose hazards in all MR environments. MR Unsafe
items include magnetic items such as a pair of ferromagnetic scissors.
Detailed information on B
0
values, gradient and RF data, as well as
graphic representations of the spatial distributions are included in the
MR compatibility data sheet. See:
System Owner Manual
What else must be observed?
Ambient conditions
As the ambient conditions and SAR have a considerable effect on the
patient’s body temperature, you must regularly check the ambient
conditions.
The patient’s ability to dissipate surplus heat is increasingly affected
as the room temperature and relative humidity increase.
◆
Ensure that the room temperature is at or below 22°C and the
relative humidity does not exceed 60%.
Access to the examination room
Free access to and exit from the examination room must be ensured
at all times.
1
Regularly check the correct functioning of the door to the
examination room.
Technical data
2.3
2.3.1
Regulating the room
temperature
2.3.2
2
Safety
30
MR System | Operator Manual
Print No. M6-04401.621.02.02.02