Document Detail

An approach to MRI-based dosimetry for transcranial magnetic stimulation.
MedLine Citation:
PMID:  17509897     Owner:  NLM     Status:  MEDLINE    
A new MRI-based measurement of the magnetic vector field distribution generated by a transcranial magnetic stimulation (TMS) probe is introduced in this study. Projections of the static magnetic field produced by a DC current in a TMS probe onto the axis of the scanner's main field (B0) can be measured using a conventional B0 field-mapping technique. The remaining Cartesian components can then be calculated from projections obtained at different orientations of the sample and probe. The measured static field can then be scaled to calculate the effects of a dynamic TMS pulse. This article includes a study demonstrating the feasibility of this approach on a phantom and a human subject.
Luis Hernandez-Garcia; Sangwoo Lee; William Grissom
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Publication Detail:
Type:  Journal Article     Date:  2007-04-18
Journal Detail:
Title:  NeuroImage     Volume:  36     ISSN:  1053-8119     ISO Abbreviation:  Neuroimage     Publication Date:  2007 Jul 
Date Detail:
Created Date:  2007-07-06     Completed Date:  2007-10-18     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9215515     Medline TA:  Neuroimage     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1171-8     Citation Subset:  IM    
Functional MRI Laboratory, Ann Arbor, MI 48109-2108, USA.
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MeSH Terms
Brain Mapping / methods*
Cerebral Cortex / physiology*
Computer Simulation
Electromagnetic Fields*
Image Processing, Computer-Assisted / methods*
Magnetic Resonance Imaging / methods*
Phantoms, Imaging
Transcranial Magnetic Stimulation / methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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