A clinical comparison of rigid and inflatable endorectal-coil probes for MRI and 3D MR spectroscopic imaging (MRSI) of the prostate.

Journal of Magnetic Resonance Imaging : JMRI
Susan M NoworolskiJohn Kurhanewicz

Abstract

To compare the data quality and ease of use of four endorectal-coil probe setups for prostate MRI. Four endorectal-coil probe setups were compared: 1) air-inflated probe; 2) perfluorocarbon (PFC)-inflated probe; 3) rigid, smaller prototype coil; and 4) rigid, smaller coil designed for biopsying the prostate. Signal-to-noise ratio (SNR), positioning, shimming, MRI motion artifact, and MR spectroscopic imaging (MRSI) spectral quality were assessed. Rigid coils provided approximately 2.5-fold higher SNR than inflatable coils near the peripheral zone midline. The biopsy probe sensitivity decreased dramatically by the apex. The rigid probes, as compared to the inflatable probes, took longer to place (10 +/- 2 vs. 7 +/- 2 minutes, P < 0.0002), tended to be placed too superiorly, required repositioning more often (73% vs. 20%, P < 0.003), and had higher motion artifacts (P < 0.001). Shimming time was least for the PFC-inflated probe (2 +/- 0.5 minutes, P < 0.05). The air-inflated probe produced larger linewidths (P < 0.01) and tended to have longer shim times (7 +/- 4 minutes) and poorer spectral quality. The inflatable coil is a good clinical choice due to ease of use, good coverage, and low motion artifacts. PFC-inflation is recomme...Continue Reading

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Citations

Oct 30, 2010·Journal of Magnetic Resonance Imaging : JMRI·David K W YeungAnn D King
Apr 27, 2012·Journal of Magnetic Resonance Imaging : JMRI·Antonio C WestphalenJohn Kurhanewicz
May 15, 2012·Journal of Magnetic Resonance Imaging : JMRI·Rajakumar NagarajanM Albert Thomas
Jun 8, 2012·NMR in Biomedicine·Xiufeng Li, Gregory J Metzger
May 25, 2013·NMR in Biomedicine·Miriam W Lagemaat, Tom W J Scheenen
Jun 14, 2013·NMR in Biomedicine·Thiele KobusArend Heerschap
Oct 16, 2015·BMC Medical Imaging·Dorothy LuiAlexander Wong
Nov 20, 2015·Journal of Magnetic Resonance Imaging : JMRI·M Arcan ErtürkGregory J Metzger
Apr 9, 2020·Physics in Medicine and Biology·Chang-Hoon ChoiKarl Ziemons

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