Abstract
Purpose: Electromagnetic articulography (EMA) uses a helmet to create alternating magnetic fields for tracking speech articulator movement. An important safety consideration is whether EMA magnetic fields interfere with the operation of speakers' pacemakers or implantable cardioverter-defibrillators (ICDs). In this investigation, individuals with pacemaker/ICD devices were exposed to EMA fields under controlled conditions while potential interference was examined. Method: Twelve adults with pacemaker/ICD devices from 3 major manufacturers were assessed for device function before, during, and after exposure to magnetic fields from a Carstens AG100 EMA system. Potential interference was probed, with EMA transmitters positioned at varying distances from the implantable devices and with the EMA system set at different operating strengths. Results: No adverse affects in device operation were observed under any conditions. The only potential complication was temporary telemetry-link interference during device testing in some cases. Conclusion: The results suggest that EMA technology may be safely used with patients who have pacemakers and ICDs. However, the present findings do not rule out potential interference with other pacemaker/ICD manufacturers or with different articulography systems. Precautions are suggested for testing individuals with pacemaker/ICDs under EMA conditions.
Original language | English (US) |
---|---|
Pages (from-to) | 1082-1087 |
Number of pages | 6 |
Journal | Journal of Speech, Language, and Hearing Research |
Volume | 52 |
Issue number | 4 |
DOIs | |
State | Published - Aug 1 2009 |
Keywords
- Defibrillator
- EMA safety
- Electromagnetic articulography
- Electromagnetic interference
- Pacemaker
ASJC Scopus subject areas
- Language and Linguistics
- Linguistics and Language
- Speech and Hearing