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Abstract #4404

Parallel Transmission Experiments Using an Extensible RF Pulse Generator

Andre Kuehne1, 2, Patrick Waxmann2, Werner Hoffmann2, Harald Pfeiffer2, Reiner Seemann2, Frank Seifert2, Bernd Ittermann2

1Medical University of Vienna, Vienna, Austria; 2Department for Medical Metrology, Physikalisch-Technische Bundesanstalt, Berlin, Germany

An extensible multichannel small signal chain and its application to transmit SENSE experiments at 3T is presented. Up to 20 channels can be driven by a 2x4HE 19" units, with the possibility of interconnecting and synchronizing multiple of these nodes.It is capable to work with any scanner, given a clock and trigger signal is provided, and can be used for a wide range of frequencies up to 300 MHz. The obtained images are indistinguishible from images generated with the manufacturer's small signal chain, proving its feasibility.

Keywords

abilities able acceleration according achieved adaptable additional adjusting amplifier analogue applying array arrays available bandpass boards boosted bottom builds called card cards caused chain chains channel channels clock coil comparatively complete components confirms conjunction connects constant controlled conversion converters cost currently cylindrical delay desired digital done eight ensures equivalent especially excitation existing experiment extending extensible extension feasibility field filter filtering filters flash footprint frank frequencies frequency full future generator good housed included independent indicates indistinguishable interpolation issues limited load maintain making manufacturers mapping matrix medical mitigate mode modified need output parallel parts pattern phantom playback power powers previously principle proposed proton providing pulse pulses rapid receives relates relations removes replacement replacing ribbon sample sampled sampling scanner sense setup seven shapes shim shimming shortening side since spectrum stable stacked static steps subsequently supplying switch synchronized system taken throughout transfer transmission transmit trigger triggering twelve ultrahigh units unwanted usable usually wavelength yield yields