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  • Journal article
    Gold GE, Hargreaves BA, Reeder SB, Block WF, Kijowski R, Vasanawala SS, Kornaat PR, Bammer R, Newbould R, Bangerter NK, Beaulieu CFet al., 2007,

    Balanced SSFP imaging of the musculoskeletal system

    , JOURNAL OF MAGNETIC RESONANCE IMAGING, Vol: 25, Pages: 270-278, ISSN: 1053-1807
  • Journal article
    Bangerter NK, Hargreaves BA, Gold GE, Stucker DT, Nishimura DGet al., 2006,

    Fluid‐attenuated inversion‐recovery SSFP imaging

    , Journal of Magnetic Resonance Imaging, Vol: 24, Pages: 1426-1431, ISSN: 1053-1807

    <jats:title>Abstract</jats:title><jats:sec><jats:title>Purpose</jats:title><jats:p>To describe and evaluate a fast, fluid‐suppressed 2D multislice steady‐state free precession (SSFP) neuroimaging sequence.</jats:p></jats:sec><jats:sec><jats:title>Materials and Methods</jats:title><jats:p>We developed a fast fluid‐attenuated inversion‐recovery SSFP sequence for use in neuroimaging. The inversion time (TI) was optimized to yield good cerebrospinal fluid (CSF) suppression while conserving white matter (WM)/lesion contrast across a broad range of flip angles. Multiple SSFP acquisitions were combined using the sum‐of‐squares (SOS) method to maximize SNR efficiency while minimizing SSFP banding artifacts. We compared our fluid‐attenuated inversion‐recovery (FLAIR) SSFP sequence with FLAIR fast spin‐echo (FSE) in both normal subjects and a volunteer with multiple sclerosis. SNR measurements were performed to ascertain the SNR efficiency of each sequence.</jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p>Our FLAIR SSFP sequence demonstrated excellent CSF suppression and good gray matter (GM)/WM contrast. Coverage of the entire brain (5‐mm slices, 24‐cm FOV, 256 × 192 matrix) was achieved with FLAIR SSFP in less than half the scan time of a corresponding FLAIR FSE sequence with similar SNR, yielding improvements of more than 50% in SNR efficiency. Axial scans of a volunteer with multiple sclerosis show clearly visible plaques and very good visualization of brain parenchyma.</jats:p></jats:sec><jats:sec><jats:title>Conclusion</jats:title><jats:p>We have demonstrated the feasibility of a very fast fluid‐suppressed neuroimaging technique using SSFP. J. Magn. Reson. Imaging 2006. © 2006 Wiley‐Liss, Inc.</jats:p></jats:sec>
  • Journal article
    Hargreaves BA, Bangerter NK, Shimakawa A, Vasanawala SS, Brittain JH, Nishimura DGet al., 2006,

    Dual-acquisition phase-sensitive fat–water separation using balanced steady-state free precession

    , Magnetic Resonance Imaging, Vol: 24, Pages: 113-122, ISSN: 0730-725X
  • Journal article
    Bangerter NK, Hargreaves BA, Vasanawala SS, Pauly JM, Gold GE, Nishimura DGet al., 2004,

    Analysis of multiple‐acquisition SSFP

    , Magnetic Resonance in Medicine, Vol: 51, Pages: 1038-1047, ISSN: 0740-3194

    <jats:title>Abstract</jats:title><jats:p>Refocused steady‐state free precession (SSFP) is limited by its high sensitivity to local field variation, particularly at high field strengths or the long repetition times (TRs) necessary for high resolution. Several methods have been proposed to reduce SSFP banding artifact by combining multiple phase‐cycled SSFP acquisitions, each differing in how individual signal magnitudes and phases are combined. These include maximum‐intensity SSFP (MI‐SSFP) and complex‐sum SSFP (CS‐SSFP). The reduction in SSFP banding is accompanied by a loss in signal‐to‐noise ratio (SNR) efficiency. In this work a general framework for analyzing banding artifact reduction, contrast, and SNR of any multiple‐acquisition SSFP combination method is presented. A new sum‐of‐squares method is proposed, and a comparison is performed between each of the combination schemes. The sum‐of‐squares SSFP technique (SOS‐SSFP) delivers both robust banding artifact reduction and higher SNR efficiency than other multiple‐acquisition techniques, while preserving SSFP contrast. Magn Reson Med 51:1038–1047, 2004. © 2004 Wiley‐Liss, Inc.</jats:p>
  • Journal article
    McRobbie DW, Pritchard S, Quest RA, 2003,

    Studies of the human oropharyngeal airspaces using magnetic resonance imaging.: 1.: Validation of a three-dimensional MRI method for producing <i>ex vivo</i> virtual and physical casts of the oropharyngeal airways during inspiration

    , JOURNAL OF AEROSOL MEDICINE-DEPOSITION CLEARANCE AND EFFECTS IN THE LUNG, Vol: 16, Pages: 401-415, ISSN: 0894-2684
  • Journal article
    Morrell MJ, McRobbie DW, Quest RA, Cummin ARC, Ghiassi R, Corfield DRet al., 2003,

    Changes in brain morphology associated with obstructive sleep apnea

    , SLEEP MEDICINE, Vol: 4, Pages: 451-454, ISSN: 1389-9457
  • Journal article
    Mort DJ, Perry RJ, Mannan SK, Hodgson TL, Anderson E, Quest R, McRobbie D, McBride A, Husain M, Kennard Cet al., 2003,

    Differential cortical activation during voluntary and reflexive saccades in man

    , NEUROIMAGE, Vol: 18, Pages: 231-246, ISSN: 1053-8119
  • Journal article
    McRobbie DW, Quest RA, 2002,

    Effectiveness and relevance of MR acceptance testing: results of an 8 year audit

    , BRITISH JOURNAL OF RADIOLOGY, Vol: 75, Pages: 523-531, ISSN: 0007-1285

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