POWER SUPPLIES - MXH SERIES
MXH shim power supplies are capable of dealing with the challenge
brought by fast MRI imaging: maintaining a constant shim current in the
presence of extremely strong gradient pulses.
between shim and gradient coils causes injection of high bandwidth
current pulses into the shim coils, resulting in a time-dependent
de-shimming of the magnet, thus generating reconstruction artifacts.
intensity and complexity of these coupling mechanisms are particularly
strong in high-performance gradient coils such as those used for EPI, cardiac
imaging. This is especially important at 3T and higher field magnets,
and in cases where asymmetric gradients and short magnets are being
MXH series of shim power supplies are the only product line in the
market designed for, and capable of, managing coil coupling, while
providing very high stability and short setting times.
MXH shim power supplies are based on high-gain, dual stage current
amplifiers with linear output stages, capable of high-current DC drive
and high-bandwidth AC compliance controlling the injection of energy
into the RT shim system.
This system is complemented by an
optimized RF enclosure penetration panel.
MXH shim power supplies are self-contained and include three-phase AC to
DC power supplies with integrated forced air cooling. An
intelligent interface featuring RS-232 control, 16-bit, optically
isolated digital-to-analog converters, current monitoring, safety and
diagnostic circuitry are included.
Other interface protocols are also available.
capabilities of the MXH series of shim power supplies can be fully
experienced when combined with BFG-S integrated
gradient and shim systems.