Xin Huang1, Vick Chen1, and Shiloh Sison1
1Abbott Laboratories, Sunnyvale, CA, United States
1Abbott Laboratories, Sunnyvale, CA, United States
The
highest peak B1+ center slab average in ASTM phantom is found to be 27 µT inside
the 3T commercial MR systems. The 3T MRI safety assessment should include
values up to this level.
Figure 2. The
general test set-up (GE MR750 testing). The H-field sniffer probe is within the
phantom, in the center of the scanner. The probe remote unit was placed on a
shelf as far away as possible from the scanner. The remote unit was connected,
via a coaxial cable through a waveguide, to a standard oscilloscope positioned
beside the operator console.
Figure 1. Phantom
used for testing. Left: The phantom is shown filled to a depth of 7 cm for
testing on the Siemens Prisma system. Right: the phantom is shown filled to a
depth of 4 cm for testing on the GE MR750.