3D-imaging of the knee with an optimized 3D-FSE-sequence and a 15-channel knee-coil

European Journal of Radiology
Mike NotohamiprodjoChristian Glaser

Abstract

To evaluate the clinical usefulness of an optimized 3D-Fast-Spin-Echo-sequence (3D-SPACE) in combination with a 15-channel knee-coil for 3D-imaging of the knee at 3T. 15 volunteers and 50 consecutive patients were examined at 3 T with fat-saturated moderately T2-weighted 3D-SPACE (Voxel-size (VS): 0.6 mm×0.5 mm×0.5 mm/acquisition-time (AT) 10:44 min) using a 15-channel knee-coil. Flip angle optimization and radial k-space reordering were applied. Signal- and contrast-to-noise-ratios (SNR, CNR) were compared to non-optimized 3D-SPACE (8-channel knee-coil) and conventional 2D-FSE (VS: 0.4 mm×0.4 mm×3 mm/total AT: 12 min). Two radiologists independently rated depiction of internal knee structures and assessed detection and depiction of cartilage and meniscus abnormalities compared to conventional 2D-FSE-sequences. Sensitivity and specificity were calculated for a subgroup with arthroscopy as reference standard. Statistical analysis was performed with paired t-tests, confidence intervals and weighted-κ-coefficients. SNR and CNR particularly of fluid/cartilage of optimized 3D-SPACE were significantly higher (p<0.05) than of the non-optimized 3D-sequence and conventional 2D-sequence. Blurring and image inhomogeneity were reduced in t...Continue Reading

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Citations

Jun 15, 2014·Der Radiologe·C Rehnitz, M-A Weber
Oct 27, 2012·Insights Into Imaging·Pieter Van DyckPaul M Parizel
Jan 9, 2014·Journal of Magnetic Resonance Imaging : JMRI·John P Mugler
Mar 31, 2015·Der Orthopäde·C Rehnitz, M-A Weber
Jun 2, 2016·AJR. American Journal of Roentgenology·Christian SmithAdil Ajuied
May 18, 2016·Investigative Radiology·Jan FritzEsther Raithel
May 15, 2020·Investigative Radiology·Pieter Van DyckBen Jeurissen
Feb 18, 2017·Journal of Magnetic Resonance Imaging : JMRI·Nicholas C NaceyJennifer L Pierce
Feb 4, 2021·AJR. American Journal of Roentgenology·Jan FritzFilippo Del Grande

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