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Conference paperPark DJ, Javed A, Bangerter N, et al., 2011,
Statistical Analysis of B1 Mapping Techniques
, ISMRM 19th Annual Meeting -
Conference paperKaggie JD, Park DJ, Newbould R, et al., 2011,
In Vivo Breast Sodium T1 Measurements Using Inversion Recovery 3D Cones
, ISMRM 19th Annual Meeting -
Journal articleJabbour A, Ettles C, Ismail T, et al., 2011,
Bolus administration T1 mapping as a marker of interstitial myocardial fibrosis in severe aortic stenosis
, Circulation, Vol: 124, Pages: A17191-A17191 -
Journal articleAsher K, Bangerter NK, Watkins RD, et al., 2010,
Radiofrequency Coils for Musculoskeletal MRI
, Topics in Magnetic Resonance Imaging, ISSN: 0899-3459 -
Journal articleMorrell MJ, Jackson ML, Twigg GL, et al., 2010,
Changes in brain morphology in patients with obstructive sleep apnoea
, THORAX, Vol: 65, Pages: 908-914, ISSN: 0040-6376- Cite
- Citations: 138
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Journal articleGold G, Shapiro L, Hargreaves B, et al., 2010,
Advances in Musculoskeletal Magnetic Resonance Imaging
, Topics in Magnetic Resonance Imaging, Vol: 21, Pages: 335-338, ISSN: 0899-3459 -
Conference paperYang G, Hipwell J, Tanner C, et al., 2010,
Collaboration of Reconstruction and Registration for Digital Tomosynthesis Application
, 2010 Annual CIMST Meeting -
Conference paperYang G, Hipwell J, Clarkson M, et al., 2010,
Combined Reconstruction and Registration of Digital Breast Tomosynthesis
, 10th International Workshop on Digital Mammography (IWDM), Publisher: Lecture Notes in Computer Science, Springer, Pages: 760-768, ISSN: 0302-9743 -
Journal articleStaroswiecki E, Bangerter NK, Gurney PT, et al., 2010,
In vivo sodium imaging of human patellar cartilage with a 3D cones sequence at 3 T and 7 T
, Journal of Magnetic Resonance Imaging, Vol: 32, Pages: 446-451, ISSN: 1053-1807<jats:title>Abstract</jats:title><jats:sec><jats:title>Purpose:</jats:title><jats:p>To compare signal‐to‐noise ratios (SNRs) and T*<jats:sub>2</jats:sub> maps at 3 T and 7 T using 3D cones from in vivo sodium images of the human knee.</jats:p></jats:sec><jats:sec><jats:title>Materials and Methods:</jats:title><jats:p>Sodium concentration has been shown to correlate with glycosaminoglycan content of cartilage and is a possible biomarker of osteoarthritis. Using a 3D cones trajectory, 17 subjects were scanned at 3 T and 12 at 7 T using custom‐made sodium‐only and dual‐tuned sodium/proton surface coils, at a standard resolution (1.3 × 1.3 × 4.0 mm<jats:sup>3</jats:sup>) and a high resolution (1.0 × 1.0 × 2.0 mm<jats:sup>3</jats:sup>). We measured the SNR of the images and the T*<jats:sub>2</jats:sub> of cartilage at both 3 T and 7 T.</jats:p></jats:sec><jats:sec><jats:title>Results:</jats:title><jats:p>The average normalized SNR values of standard‐resolution images were 27.1 and 11.3 at 7 T and 3 T. At high resolution, these average SNR values were 16.5 and 7.3. Image quality was sufficient to show spatial variations of sodium content. The average T*<jats:sub>2</jats:sub> of cartilage was measured as 13.2 ± 1.5 msec at 7 T and 15.5 ± 1.3 msec at 3 T.</jats:p></jats:sec><jats:sec><jats:title>Conclusion:</jats:title><jats:p>We acquired sodium images of patellar cartilage at 3 T and 7 T in under 26 minutes using 3D cones with high resolution and acceptable SNR. The SNR improvement at 7 T over 3 T was within the expected range based on the increase in field strength. The measured T*<jats:sub>2</jats:sub> values were also consistent with previously published values. J. Magn. Reson. Imaging 2010;32:446–451. © 2010
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Conference paperYang G, Hipwell J, Clarkson M, et al., 2010,
Combined reconstruction and registration of digital breast tomosynthesis: Sequential method versus iterative method
, Medical Image Understanding and Analysis, Publisher: British Machine Vision Association, Pages: P27-1-P27-5
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For enquiries about the MRI Physics Collective, please contact:
Mary Finnegan
Senior MR Physicist at the Imperial College Healthcare NHS Trust
Pete Lally
Assistant Professor in Magnetic Resonance (MR) Physics at Imperial College
Jan Sedlacik
MR Physicist at the Robert Steiner MR Unit, Hammersmith Hospital Campus