Siemens AG Healthcare Sector 11/12 Technical data
4
Shielding
Active Shielding (AS) 5
th
generation active shielding (AS) tech-
nology with counter coils
Fringe field (axial×radial) 0.5 mT
1
4.6 m×2.6 m
0.1 mT 6.8 m×3.9 m
External Interference Shield (E.I.S.) Patented shielding system integrated into
the magnet
Continuous compensation and automatic
suppression of external magnetic field
interferences during measurement (caused
by moving ferromagnetic objects or nearby
power lines)
1. pacemaker safety limit
Magnet cooling system
Refill interval (typical)
1
Not applicable
Boil-off rate (typical)
1
0.0 l/year
Max. helium capacity approx. 1200 liters
Minimum helium level 35%
Cryostat Stainless steel
1. For typical clinical use, depending on sequences and operating time with running helium compressor.
The system needs to be serviced at regular interval. Undisturbed magnet cooling for 24 hours and
7days a week.
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