Magnetic Resonance Imaging at 7 Tesla with Dedicated Radiofrequency Coils - Application to Cervical Cord and Knee
Maria Evelina Fantacci, Laura Biagi, Mirco Cosottini, Mauro Costagli, Massimo Marletta, Alessandra Retico, Riccardo Stara, Mark Symms, Gianluigi Tiberi, Virna Zampa, Michela Tosetti
2016
Abstract
Magnetic Resonance (MR) Imaging is a valuable tool in the diagnosis and monitoring of various musculoskeletal pathologies. New Ultra-High Field (UHF) 7 T MRI systems, with their enhanced Signal-to-Noise Ratio, may offer increased image quality in terms of spatial resolution and/or shorter scanning time compared to lower field systems. However, these benefits can be difficult to obtain because of increased radio-frequency (RF) inhomogeneity, increased Specific Absorption Rate (SAR) and the relative lack of specialized and commercially available RF coils compared to lower field systems. This study reports the feasibility of imaging in bones and cartilages at UHF with a 7 T MR scanner available at the IMAGO7 Foundation (Pisa, Italy). Dedicated radio-frequency coils for proton imaging have been designed, developed, optimized for different anatomical regions and validated in vivo, and are now ready for clinical research studies. The performance of the RF coil prototypes in targeting different anatomical regions are also demonstrated, obtaining images of the neck (the cervical cord) and of the knee (trabecular bone and cartilages).
References
- Farooki, S, C.J. Ashman, CJ et al., 2002. “In vivo highresolution MR imaging of the carpal tunnel at 8.0 Tesla,” Skeletal Radiology, vol. 31(8), pp. 445-450.
- Kraff, O, Fischer, A et al., 2015. “MRI at 7 Tesla and Above: Demonstrated and Potential Capabilities,” Journal of Magnetic Resonance Imaging, vol. 41, pp. 13-33.
- Krug, R et al., 2009. “Imaging of the Musculoskeletal System In Vivo Using Ultra-high Field Magnetic Resonance at 7 T”, Investigative Radiology, vol. 44 n. 9, pp. 613-618.
- Gambarota, G, Veltien, A, et al., 2007. “Magnetic resonance imaging and T2 relaxometry of human median nerve at 7 Tesla,” Muscle Nerve, vol. 36(3), pp. 368-373.
- Majumdar, S, 2008. “Ultra-High Field-7 Tesla Imaging of the Musculoskeletal System,” ISMRM High Field Workshop, Rome.
- Mispelter, J, Lupu M et al., 2006. “NMR Probeheads for Biophysical and Biomedical Experiments: Theorical Principles Pratical Guidilines,” Imperial College Press.
- Retico A, Stara, R et al., 2015. “Non-invasive assessment of Neuromuscular Disorders by 7 tesla Magnetic Resonance Imaging and Spectroscopy: Dedicated radio-frequency coil development”, 2015 IEEE International Symposium on Medical Measurements and Applications (MeMeA) pp. 68-73.
- Regatte, RR and Schweitzer, ME, 2007. “Ultra-high field MRI of the muscoloskeletal system at 7.0 T,” Journal of Magnetic Resonance Imaging, vol. 25(2), pp. 262- 269.
- Smith, P, 1995. Electronic Applications of the Smith Chart, 2nd edition, 1995, SciTech/Noble Publishing, Raleigh, North Carolina.
- Ugurbil, K, Adriany, G et al., 2003. P. Andersen, et al., “Ultrahigh field magnetic resonance imaging and spectroscopy,” Magn. Reson. Imaging, vol. 21, pp. 1263-1281, 2003.
- Yushkevich, PA, Piven, J et al., 2006. “User-guided 3D active contour segmentation of anatomical structures: Significantly improved efficiency and reliability.” Neuroimage vol. 31, n. 3, pp 1116-28.
Paper Citation
in Harvard Style
Fantacci M., Biagi L., Cosottini M., Costagli M., Marletta M., Retico A., Stara R., Symms M., Tiberi G., Zampa V. and Tosetti M. (2016). Magnetic Resonance Imaging at 7 Tesla with Dedicated Radiofrequency Coils - Application to Cervical Cord and Knee . In Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2016) ISBN 978-989-758-170-0, pages 229-234. DOI: 10.5220/0005774102290234
in Bibtex Style
@conference{biodevices16,
author={Maria Evelina Fantacci and Laura Biagi and Mirco Cosottini and Mauro Costagli and Massimo Marletta and Alessandra Retico and Riccardo Stara and Mark Symms and Gianluigi Tiberi and Virna Zampa and Michela Tosetti},
title={Magnetic Resonance Imaging at 7 Tesla with Dedicated Radiofrequency Coils - Application to Cervical Cord and Knee},
booktitle={Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2016)},
year={2016},
pages={229-234},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005774102290234},
isbn={978-989-758-170-0},
}
in EndNote Style
TY - CONF
JO - Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2016)
TI - Magnetic Resonance Imaging at 7 Tesla with Dedicated Radiofrequency Coils - Application to Cervical Cord and Knee
SN - 978-989-758-170-0
AU - Fantacci M.
AU - Biagi L.
AU - Cosottini M.
AU - Costagli M.
AU - Marletta M.
AU - Retico A.
AU - Stara R.
AU - Symms M.
AU - Tiberi G.
AU - Zampa V.
AU - Tosetti M.
PY - 2016
SP - 229
EP - 234
DO - 10.5220/0005774102290234