Computational study of external fixation devices surface heating in MRI RF environment

Heating effect by external fixation devices under MRI RF field was studied numerically for both 1.5-T and 3-T MRI systems. It is found that changing insertion depth and pin spacing could largely affect the surface heating level. In 1.5-T MRI, smaller insertion depth and larger pin spacing will produ...

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Bibliographic Details
Published in2012 IEEE International Symposium on Electromagnetic Compatibility pp. 612 - 616
Main Authors Yan Liu, Jianxiang Shen, Kainz, W., Songsong Qian, Wen Wu, Ji Chen
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.08.2012
Subjects
Coils
Heating
Magnetic resonance imaging
Materials
Phantoms
Pins
Radio frequency
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ISBN9781467320610
1467320617
ISSN2158-110X
DOI10.1109/ISEMC.2012.6351691

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Summary:Heating effect by external fixation devices under MRI RF field was studied numerically for both 1.5-T and 3-T MRI systems. It is found that changing insertion depth and pin spacing could largely affect the surface heating level. In 1.5-T MRI, smaller insertion depth and larger pin spacing will produce larger temperature rise. However, for 3T system, the relation is not very clear when insertion depth became larger than 5cm or when pin spacing became larger than 20cm. Effect of connection bar material on external fixator is also studied and the heating mechanism of the device is analysed.
ISBN:9781467320610
1467320617
ISSN:2158-110X
DOI:10.1109/ISEMC.2012.6351691