| A Simple Analytical Expression for the Gradient Induced Potential on Active Implants During MRI. | |
| | |
MedLine Citation:
|
PMID: 22893367 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
During MRI, there is an interaction between the time-varying magnetic fields and the active implantable medical devices. In this work, in order to express the nature of this interaction, simplified analytical expressions for the electric fields induced by time-varying magnetic fields are derived inside a homogeneous cylindrical volume. With these analytical expressions, the gradient induced potential on the electrodes of the active implantable medical devices can be approximately calculated if the position of the lead inside the body is known. By utilizing the fact that gradient coils produce linear magnetic field in a volume of interest, the simplified closed form electric field expressions are defined. Using these simplified expressions, the induced potential on an implant electrode has been computed approximately for various lead positions on a cylindrical phantom and verified by comparing with the measured potentials for these sample conditions. In addition, the validity of the method was tested with isolated frog leg stimulation experiments. As a result, these simplified expressions may help in assessing the gradient induced stimulation risk to the patients with implants. |
| | |
Authors:
|
E Abaci Turk; E Kopanoglu; S Guney; K Bugdayci; Y Ider; V Erturk; E Atalar |
Related Documents
:
|
11737417 - Comparison of sperm preparation methods: effect on chromatin and morphology recovery ra... 17976067 - Distribution of spermatozoa and embryos in the female reproductive tract after unilater... 12819827 - Cryopreservation of human sperm using rapid cooling rates. 7377557 - Motility, vitality and percentages of morphologically abnormal forms of human spermatoz... 22570357 - Shock and patient preimplantation type d personality are associated with poor health st... 8534377 - Evaluation of a new dentifrice for the treatment of sensitive teeth. |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2012-8-07 |
Journal Detail:
|
Title: IEEE transactions on bio-medical engineering Volume: - ISSN: 1558-2531 ISO Abbreviation: IEEE Trans Biomed Eng Publication Date: 2012 Aug |
Date Detail:
|
Created Date: 2012-8-15 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0012737 Medline TA: IEEE Trans Biomed Eng Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Optimal Algorithm Switching for the Estimation of Systole Period from Cardiac Micro-Acceleration Sig...
Next Document: Hydraulic driven fast and precisie non-magnetic tactile stimulator for neurophysiological and MEG me...