TY - GEN
T1 - An active TX/RX NMR probe for real-time monitoring of MRI field imperfections
AU - Handwerker, Jonas
AU - Ortmanns, Maurits
AU - Anders, Jens
AU - Eschelbach, Martin
AU - Chang, Paul
AU - Henning, Anke
AU - Scheffler, Klaus
PY - 2013
Y1 - 2013
N2 - In this paper, we present a PCB-based active miniaturized MR field probe for real-time monitoring of the magnetization's phase evolution during magnetic resonance (MR) experiments. The data obtained with the presented sensor can be used to correct gradient field imperfections which uncorrected result in significant distortions in the reconstructed MR images. The presented active field probe consists of a susceptibility matched solenoidal MR coil and a complete homodyne transceiver. Thanks to the local generation of the radio frequency signal required for the excitation of the spin ensemble and the downconversion of the recorded MR signal to low frequencies, the proposed architecture significantly reduces the crosstalk between the probe head and the MR imaging object compared to existing designs. MR measurements performed in an ultra high field 9.4 T full-body scanner prove the compatibility of the presented sensor with commercial MR imaging systems and demonstrate its excellent MR phase tracking performance.
AB - In this paper, we present a PCB-based active miniaturized MR field probe for real-time monitoring of the magnetization's phase evolution during magnetic resonance (MR) experiments. The data obtained with the presented sensor can be used to correct gradient field imperfections which uncorrected result in significant distortions in the reconstructed MR images. The presented active field probe consists of a susceptibility matched solenoidal MR coil and a complete homodyne transceiver. Thanks to the local generation of the radio frequency signal required for the excitation of the spin ensemble and the downconversion of the recorded MR signal to low frequencies, the proposed architecture significantly reduces the crosstalk between the probe head and the MR imaging object compared to existing designs. MR measurements performed in an ultra high field 9.4 T full-body scanner prove the compatibility of the presented sensor with commercial MR imaging systems and demonstrate its excellent MR phase tracking performance.
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U2 - 10.1109/BioCAS.2013.6679672
DO - 10.1109/BioCAS.2013.6679672
M3 - Conference contribution
AN - SCOPUS:84893605215
SN - 9781479914715
T3 - 2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013
SP - 194
EP - 197
BT - 2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013
T2 - 2013 IEEE Biomedical Circuits and Systems Conference, BioCAS 2013
Y2 - 31 October 2013 through 2 November 2013
ER -