TORONTO--(BUSINESS WIRE)--Synaptive Medical, a global pioneer in automated surgical planning and robotics, announced today that the Company presented new findings related to its mid-field MRI system research and design at the 57th American Society of Neuroradiology (ASNR) Annual Meeting at the Hynes Convention Center in Boston, MA from May 18 – 23. The oral presentation of the Company’s abstract, titled, “Increasing MRI Safety for Patients with Implanted Medical Devices: Comparisons of a 0.5 T Head-Only MRI to 1.5 T and 3 T,” took place at 5:33 p.m. EDT on Monday, May 20, during the meeting’s Artificial Intelligence (AI)/Advanced Imaging in the Spine and Brain session.

The presentation highlighted the potential for improved safety of an MRI scanner outfitted with a magnet operating at mid-field strength—0.5 Tesla (T)—relative to conventional 1.5 T MRI scanners in patients with medical device implants. Implants with neuro-stimulator leads can cause dangerous levels of heating to surrounding tissue when exposed to the external radio-frequency fields produced by MRI systems, which relegates some patients to scans of low quality, long duration or may prevent patients from receiving necessary scans altogether. To investigate whether a mid-field MRI scanner may cause relatively diminished tissue heating within range as deemed safe for such patients, a study conducted by Synaptive compared local specific absorption rate (SAR) of metal rods—a measure used to infer the extent of implant-proximal tissue heating—embedded in a phantom non-conducting mass to simulate a human torso.

MR image results demonstrated that when compared to conventional 1.5 T and even to 3.0 T MRI systems, mid-field 0.5 T systems produced a lower maximum SAR in the metal rods, which may correspond to levels of patient tissue heating that lie within accepted MR safety standards. Importantly, due to recent advances in the quality of mid-field technology, the images exhibit high quality to display diagnostically relevant information in the context of patient scans. Together, these results indicate that moving forward with patient studies in the context of mid-field MRI may be warranted.
The study results presented pertain to Synaptive’s mid-field, head-only MRI system called EvryTM, which is expected to be launched in Canada later this year. Designed to include a magnet operating at 0.5 T field strength, as well as high-performance system components like powerful gradients and a custom head coil, Evry is expected to target point-of-care installation outside of hospital imaging departments to provide scans for cases that require immediate evaluation, such as acute stroke.

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