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Figure 1 . The fringe field extends beyond the iron room and is reflected in the coloring of the red lines on black terrazzo floor. This same color coding is used on the carpet and computer flooring to mark the 5-gauss fringe field to address safety concerns.
Figure 2 . Electrical isolation of the iron room was ensured by isolating the iron floor from the concrete slab with a dielectric polymer paint and 10-mm thick PVC plastic sheets. The inside joints of the iron blocks were welded continuously to ensure RF integrity. The concrete slab was made independent of the surrounding building to prevent vibration transmission into the magnet room. Electrical grounding was achieved at a single point at the penetration panel and used for all electrical grounding of the scanner electronics.

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Figure 3 . (top) Acoustically contoured lining of inside of magnet room reduces sound reflections from flat surfaces of walls and ceiling. Also seen are the fiberoptic lighting fixtures and the fire sprinkler heads suspended from the ceiling above the magnet (bottom left corner). (bottom) Acoustic noise dampening of the walls of the room surrounding the iron magnet room is shown as: (1) inner aluminum stud, (2) acoustical insulating fiber, (3) flexible separating material, second layer of acoustical insulating fiber not seen, and (4) outer aluminum stud with (5) outer drywall screwed to stud.
Figure 4 . Fiberoptic light fixture suspended from the ceiling with fiberoptic cable transmitting light from outside the magnet room from xenon light sources 40 feet away outside the 5-gauss line. Fiberoptic cables enter the room from the access ports in the ceiling of the iron room. The lighting in the magnet room operates at above 1000 gauss.

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Figure 5 . The gradient cables carry large direct currents through the large fringe field within the magnet room, thereby experiencing very large forces that are expected to produce eventual metal fatigue and breakage. Mechanical support severely restricts any significant movement to slow this failure onset. The gradient cables are clamped along their entire length within grooves machined into Garolite bars held in a horizontal orientation along the z-axis of the magnet from point of exit from the gradient set to the penetration panel.
Figure 6 . (a) MR-compatible mobile patient transporter with transferable bed and mattress that has the (b) RF coil (short white arrow) attached at one end. The electrical connection for the RF coil uses blind mate connecters mounted at the base of the leading edge of the coil (long white arrows in b) that automatically connect when the table is moved into the magnet (long white arrows in c).
The patient bed and RF coil moves on rails (short black arrows, c) onto the fixed table (c) at the end of the magnet for transfer into the magnet. This transfer is done at a controlled rate manually by twisting a wheel on a pulley (short white arrows, c). The system is geared to produce 10-cm linear motion for every 360º turn. This avoids any sensation of moving though the magnetic field.

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Figure 7 . The 9.4T magnet in position in the iron magnet room just prior to closing the wall to cover all but the opening of the bore of the magnet (covered with red 9.4T sign).
Figure 8 . Helispherical trajectory used for magnetic field mapping at the proton frequency with a spectrometer. This approach maps to 1 Hz as compared to less sensitive standard approaches using 12 plane plots based on a deuterium signal measured with a teslameter.
Reproduced with permission from Piotr Stareowicz, Resonance Research Inc.

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Figure 9 . The first image from the 9.4T scanner was acquired with an axial T
2
-weighted spin-echo RARE sequence (TR = 4000 ms , TE = 35 ms, slice thickness = 1.5 mm, FOV = 6 cm 2 , averages = 1) of a kiwi fruit using a 3-inch surface coil along the lower border of the image. There is some decrease in signal toward the top of the image consistent with limited penetration from the surface coil. The septa and seeds of the fruit are clearly evident.
The straight septa suggest a high-fidelity image albeit over a small field of view.
Figure 10 . Sodium image of the head of a non-human primate acquired using a twisted projection acquisition (TR = 100ms, TE < 0.2 ms, FOV = 16 cm 3 , total acquisition time ~6 minutes) from the birdcage head coil in the 9.4T scanner. The 3D data are presented in the axial plane. Concentration calibration phantoms (40, 80 mM) are on either side of the head.
Eyes are toward the top of the figure (anterior orientation).