Magnetic resonance imaging (MRI) is a medical imaging technique that uses strong magnetic fields to create images of the patient’s body. The noises from an MRI machine can range from 65 to 130 decibels, requiring the patient to wear ear protection. Relaxing music is often a useful way to reduce patient anxiety and claustrophobia, but conventional headphones cannot be worn due to the strong magnetic fields.
Currently, the majority of headphones that are used in MRI machines are of the pneumatic type. The loudspeaker is located outside of the actual machine, with long plastic tubes connecting the transducer to the ear of the patient.
"From an acoustics perspective, the connected tube model adds a half-wave resonance with multiple harmonics to the sound, strongly reducing sound quality. That is not ideal for patient relaxation," says Ferruccio Bottoni, CEO of USound. "USound MEMS speakers are available without ferromagnetic materials and at a lower price than electrostatic transducers. As a company, we’re proud to provide MRI-compatible headphones manufacturers with an easy solution to an otherwise tricky tech problem."
NordicNeuroLab is a leading producer of MRI-compatible medical equipment for functional MRI studies, used for diagnosing diseases and injuries related to brain function. USound MEMS speakers have a small form factor and are suitable for the development of slim headphones that fit inside the small receiver coils used in MR imaging of the brain, known as head coils. NordicNeuroLab is currently collaborating with USound to develop such headphones to provide communication, entertainment, and audible cues to patients undergoing MRI scans.
"We are very excited to work with the leader of MEMS loudspeakers and integrate their technology into our next-generation MRI audio system. The state-of-the-art technology and superior competence delivered by USound enables NordicNeuroLab to develop a superior and sophisticated MR-compatible audio system that fully meets the needs of our customers and partners,” says CEO of NordicNeuroLab, Thomas Omdahl.
USound also disclosed that companies such as BoomBang and SMRT Image are also working with the Austrian company to explore MEMS technology in MRI-compatible audio products. Boombang is a Los Angeles-based product design firm that has developed over 500 products in a broad range of consumer, medical and industrial sectors. SMRT Image is a Boombang Venture that was created in collaboration with leading MR engineers, imaging centers, and FMRI scientists.
"SMRT Image is committed to creating the highest quality and easy-to-use comfort distraction systems for the medical imaging community. We believe USound MEMS speakers, when optimized in form factor and configuration, offer a new level of design flexibility," says Boombang CEO and SMRT Image Co-Founder Tylor Garland.
With over 300 filed patents, USound continues its developments efforts to offer high-performance silicon speakers and high-quality sound solutions based on MEMS technology.
www.nordicneurolab.com
www.boombang.com | www.smrtimage.com
www.usound.com
