Are there any concerns regarding a cochlear implant patient that needs an MRI of the knee due to a sport injury?
A MRI scanner utilizes a powerful magnetic field to image parts of the body. Regardless of what part of the body is being viewed (e.g. the knee), the whole body is exposed to the magnetic fields generated by the MRI scanner when a patient is in the imaging room. The magnetic properties of an MRI machine can potentially cause harm to a cochlear implant device and the user.
Newer cochlear implant devices have become available in recent years which allow removal of the magnet prior to an MRI. This requires a procedure with a small incision to remove the magnet from the subcutaneous portion of the implant resting behind the ear before MRI completion; a similar procedure is performed to replace the magnet to allow resumption of implant use after MRI. Magnet removal makes it safe for an implant recipient to have an MRI up to 1.5 Tesla in strength (a measure of magnetic field). Although some studies have suggested it may be safe for cochlear implant patients to undergo MRI with fixed (non-removable) magnets, especially in weaker strength MRI scanners (e.g. 0.2 Tesla), this has not been accepted for general use in the United States. A cochlear implant recipient should always consult with their implant surgeon before any imaging is performed, regardless of the imaging technique.
Lance E. Jackson, MD is an Otologist/Neurotologist and president of the Ear Institute of Texas in San Antonio, TX. Refer to his web site www.earsoftexas.com for a list of publications.
This course details diagnosis of enlarged vestibular aqueduct and theories of hearing loss. Audiologic presentation, progression of hearing loss and rehabilitative options will be reviewed.
Please note: You may earn ABA Tier 1 credits for this course if you complete it as part of the course 26683, "Advanced Management of Complex Cases." Course 26683 contains recordings of all three events from Advanced Bionic's 2015 series, Advanced Management of Complex Cases. ABA Tier 1 CEUs can be earned only when all modules are completed as part of course 26683.
This modular course explores various aspects of managing advanced cases involving children with cochlear implants. The first component discusses Usher Syndrome and its relevance to newly identified children and their families. The second section details diagnosis and audiologic treatment and rehabilitative options for children with enlarged vestibular aqueduct. The third section discusses caveats regarding cochlear implant candidacy in medically complex children.
This text course discusses Auditory Brainstem Implants. It reviews the history of auditory brainstem implants, the clinical protocols, and the emerging work with the pediatric population. It is written in an engaging Q & A format.
This course will present the benefits of hearing preservation in adult cochlear implant patients using a standard length cochlear implant electrode array. The presenter will discuss his experience using standard length cochlear implant electrodes for hearing preservation as well as other centers’ experience. Research regarding future implications of hearing preservation in cochlear implantation will be reviewed.
The diagnosis of Auditory Neuropathy/Dys-synchrony in a child with a sensorineural hearing loss will quickly raise the possibility of cochlear implantation in some of these children. Our experience to date has resulted in providing cochlear implants to 35 children with this diagnosis. This presentation will review our diagnostic procedures, medical/surgical considerations and the outcomes that we have documented in this population of pediatric patients.
**FOR A GENERAL CERTIFICATE OF PARTICIPATION (No CEUs) PLEASE DOWNLOAD THE "COCHLEAR CERTIFICATE HANDOUT" AFTER REGISTRATION**
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