Abstract #1843
Development of a digital MRI console using general purpose digital instruments and board computers
Makoto Tsuda 1 , Daiki Tamada 1 , Yasuhiko Terada 1 , and Katsumi Kose 1
1
University of Tsukuba, Tsukuba, Ibaraki,
Japan
A digital MRI console for a 1.0 T MRI system was
developed using a digital oscilloscope, an arbitrary
waveform generator, and board computers. Pulse sequences
were generated by the board computers in the 20 us
resolution, which triggered other instruments. The
waveform generator directly generated Larmor frequency
(43.85 MHz) RF pulse but the oscilloscope sampled the
detected 43.85 MHz NMR signal using the under sampling
technique at 6.9 MHz. Unreproducible phase scrambling
cased by independent time-base used in each instruments
was successfully recovered using the RF pulse
simultaneously sampled, which proved a promise of our
system.
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