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Extremities, Musculoskeletal system, Ultrasound, MR, Diagnostic procedure, Image registration
M. Marinoni1, V. Saia1, T. Atzori1, S. de Beni2, S. D'Onofrio1, M. Olmi2, L. Forzoni1; 1Firenze/IT, 2Genoa/IT
Fusing MRI with real-time Ultrasound was always successful achieved with the three subjects and always led to a 5 to 2 mm registration error also on first attempt.
The highest spatial resolution algorithm worked properly by automatically switching between the two acquired MRI scans.
The highest spatial resolution was always selected based on the Ultrasound acquisition plane spatial position.
Real-time fusion imaging between MRI and Ultrasound can be successfully achieved when examined subject is both is supine/relaxed and in weight bearing/standing positions.
This method may be especially useful to achieve a higher confidence during US guided muscle biopsies and to follow-up on neurodegenerative diseases as well as to assess deep magnetic muscle stimulation treatments.
As already demonstrated by the use of fusion imaging with other body areas and clinical applications  and as recently suggested by a paper concerning FDG PET and signs of muscle denervation ,
other second imaging modes could also be employed in conjunction with real-time Ultrasound to achieve fusion imaging.