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MRI machines may damage cochlear implants
December 01, 2008Alexandria, VA - Patients with cochlear implants may want to steer clear of certain magnetic imaging devices, such as 3T MRI machines, because the machines can demagnetize the patient's implant, according to new research published in the December 2008 issue of Otolaryngology - Head and Neck Surgery.
A cochlear implant is an electronic device that restores partial hearing to the deaf. It is surgically implanted in the inner ear and activated by a device worn outside the ear. Unlike a hearing aid, it does not make sound louder or clearer. Instead, the device bypasses damaged parts of the auditory system and directly stimulates the nerve of hearing, allowing individuals who are profoundly hearing impaired to receive sound. It is estimated that more than 100,000 people have cochlear implants.
The study, conducted by a team of German and American researchers, tested several cochlear device magnets on a 3T MRI scanner with active shielding at a variety of angles (0°, 80°, 90°, 100°, 110°, and 180°). The researchers discovered that during routine use of 3T MRI machines at angles above 80°, an unacceptable level of demagnetization was reached, causing permanent damage to devices with non-removable magnets, and creating the potential of exposing patients to undesirable magnetic forces.
3T MRI scanners are the next generation of MRI scanners and are significantly more powerful than 1.5T MRI scanners.
As a result of their findings, the study authors recommend that MRI scans on patients with cochlear implants should be performed using a 3T MRI machine only if a 1.5T machine is not available, and if the benefits of the scan far outweigh the risk of cochlear implant demagnetization.
American Academy of Otolaryngology -- Head and Neck Surgery
3T MRI scanners are the next generation of MRI scanners and are significantly more powerful than 1.5T MRI scanners.
As a result of their findings, the study authors recommend that MRI scans on patients with cochlear implants should be performed using a 3T MRI machine only if a 1.5T machine is not available, and if the benefits of the scan far outweigh the risk of cochlear implant demagnetization.
American Academy of Otolaryngology -- Head and Neck Surgery
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Cochlear Current Events and Cochlear News RSSUGA researchers achieve breakthrough in effort to develop tiny biological fuel cells
University of Georgia researchers have developed a successful way to grow molecular wire brushes that conduct electrical charges, a first step in developing biological fuel cells that could power pacemakers, cochlear implants and prosthetic limbs. The journal Chemical Science calls the technique "a significant breakthrough for nanotechnology."
Drawing inspiration from nature to build a better radio
MIT engineers have built a fast, ultra-broadband, low-power radio chip, modeled on the human inner ear, that could enable wireless devices capable of receiving cell phone, Internet, radio and television signals.
Scripps research scientists discover molecular defect involved in hearing loss
Scientists from The Scripps Research Institute have elucidated the action of a protein, harmonin, which is involved in the mechanics of hearing.
Researchers Studying Hearing Loss in Adult Animals Find that Auditory Regions of the Brain Convert to the Sense of Touch
Virginia Commonwealth University School of Medicine researchers have discovered that adult animals with hearing loss actually re-route the sense of touch into the hearing parts of the brain.
NYU Langone Medical Center study shows that cochlear implant surgery is safe for the elderly
Contrary to conventional medical wisdom, a new study by NYU Langone Medical Center researchers shows that healthy elderly patients with severe to profound hearing loss can undergo a surgical procedure to receive cochlear implants with minimal risk.
New tool to assess speech development in infants, toddlers with hearing impairments
The number of hearing impaired infants and toddlers who are successfully aided by technological devices, such as hearing aids and cochlear implants, continues to grow, but there are still unknowns about these children's speaking abilities, according to a Purdue University expert.
Geriatric patients receive significant benefit from cochlear implantation
Despite previous inconclusive research, geriatric patients do experience significant quality of life improvement (QOL) after receiving cochlear implants for hearing loss, says new research presented at the 2008 American Academy of Otolaryngology - Head and Neck Surgery Foundation (AAO-HNSF) Annual Meeting & OTO EXPO in Chicago, IL.
Hearing restoration may be possible with cochlear repair after transplant of human cord blood cells
According to an Italian research team publishing their findings in the current issue of Cell Transplantation (17:6), hearing loss due to cochlear damage may be repaired by transplantation of human umbilical cord hematopoietic stem cells (HSC) since they show that a small number migrated to the damaged cochlea and repaired sensory hair cells and neurons.
Biophysical method may help to recover hearing
Scientists based in Switzerland and South Africa have created a biophysical methodology that may help to overcome hearing deficits, and potentially remedy even substantial hearing loss. The authors propose a method of retuning functioning regions of the ear to recognize frequencies originally associated with damaged areas. Details are published August 29th in the open-access journal PLoS Computational Biology.
Bilateral cochlear implants: A case when 2 are definitely superior to 1
A study of cochlear implant patients seen by Indiana University School of Medicine physicians is the first research to show evidence that cochlear implants in both ears significantly improves quality of life in patients with profound hearing loss and that the cost of the second implant is offset by its benefits.
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o Clarity o - Cochlear Adapter Cord by o Clarity o - Clarity adapter cord for Cochlear implant- 3.5mm plugs to connect to the Q90DU, XL25S, XL30, XL40, XL50, VCO, JV35, CL40, Q90DA, and Q90DUCLARITY10050 - Usually Categorized as Clarity : Audio/Video/Electronics : General Electronics | |
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