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.
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Welcome to Nucleus 5! This short course will show you the simplicity and flexibility of the Nucleus 5 Remote Assistant, and walk through its functionality. When completed you will be able to use all the features of the Remote Assistant and counsel your recipients on its use.
Este curso introductorio se basa en una jerarquï¿½a para el desarrollo de las habilidades auditivas de niï¿½os con implantes cocleares, tomando en consideraciï¿½n los contextos lingï¿½ï¿½sticos y situacionales, ademï¿½s de la funciï¿½n auditiva. Se discuten aplicaciones prï¿½cticas de esta jerarquï¿½a para llevarse a cabo en diferentes medios de habilitaciï¿½n.