Imaging – MRI

Siemens introduces 7 Tesla MRI research scanner for future clinical use

Siemens has released a 7 Tesla MRI for clinical use. These ultra-high field scanners have for some years been used exclusively for medical research. Siemens now plans to seek CE and FDA approval to market the 7T MRI for selected clinical neurological and musculoskeletal applications.

Commenting on the introduction of the new scanner, Dr Bernd Ohnesorge, CEO Magnetic Resonance at Siemens Healthcare, said: “Our new 7 Tesla scanner, Magnetom Terra, is the first 7 Tesla MRI scanner fully designed and manufactured by Siemens, with a completely new 7 Tesla magnet in its core.”

The system’s Dual Mode functionality allows users to switch from research modes to specific clinical protocols in less than 10 minutes. The system is based on the latest software platform syngo MR E11, identical to Siemens’ latest flagship 3T MRI systems, to enable consistent usability and protocol exchange.

Magnetom Terra’s actively shielded magnet is the lightest 7 Tesla whole body magnet currently available – 50% lighter than previous actively shielded 7 Tesla magnet generations. This is the result of a multi-year engineering project at Siemens Magnet Technologies in Oxford, using the experience of the team in the design and manufacturing of 3T magnets for clinical use. As a result, siting of the Magnetom Terra is easier and its location in a clinical environment becomes feasible. Combined with the Zero Helium boil-off technology, Magnetom Terra improves the lifecycle costs of ultra-high field MRI.

Magnetom Terra increases the potential for translating cutting-edge research capabilities into future clinical application – for anatomical, functional or metabolic MR imaging. This specially designed 7 Tesla technology makes this possible by offering:

• Up to eight channel parallel transmit technology for selective excitation and higher homogeneity in challenging body regions such as cardiac and abdominal.

• Up to 64 receive channels for higher coil density in the field of view to achieve higher acceleration factors, higher signalto- noise ratio and higher spatial resolution, and a better coverage of the body regions of interest.

• High gradient strength of up to 80 millitesla per metre (mT/m) and a fast gradient switching rate of up to 200 Tesla per metre per second (T/m/s) for advanced studies with diffusion and functional MR imaging.

• The latest Siemens software platform syngo MR E11 identical to Siemens’ latest flagship 3 Tesla MRI systems such as Magnetom Skyra and Magnetom Prisma. For specific clinical areas, Magnetom Terra is prepared for future clinical use with planned CE and FDA authorisation to market of the system and the corresponding local coils:

• Getting better insights into the musculoskeletal system through unprecedented high isotropic spatial resolution of 0.2 mm

• Imaging brain tumours and irregularities in the brain’s metabolic processes

• Visualizing neurodegenerative diseases such as Alzheimer’s disease, epilepsy, schizophrenia and multiple sclerosis

“Based on our long-standing experience and the largest innovation network in human ultra-high field MRI, Siemens is committed to further grow the footprint of 7 Tesla MRI in research and clinical application,” explained Dr Ohnesorge. “I am confident that our Magnetom Terra will help explore new territories in MRI research.”

 Date of upload: 21st Jul 2015


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