Evaluation of radiofrequency safety by high temperature resolution MR thermometry using a paramagnetic lanthanide complex.
Identifieur interne : 000033 ( Main/Curation ); précédent : 000032; suivant : 000034Evaluation of radiofrequency safety by high temperature resolution MR thermometry using a paramagnetic lanthanide complex.
Auteurs : Shalmali Dharmadhikari [États-Unis] ; Judy R. James [États-Unis] ; John Nyenhuis [États-Unis] ; Navin Bansal [États-Unis]Source :
- Magnetic resonance in medicine [ 1522-2594 ] ; 2016.
Abstract
The current practice of calculating the specific absorption rate (SAR) relies on local temperature measurements made using temperature probes. For an accurate SAR measurement, a temperature imaging method that provides high temperature sensitivity is desirable, because acceptable levels of SAR produce small temperature changes. MR thermometry using paramagnetic lanthanide complexes can be used to obtain absolute temperature measurements with sub-degree temperature and sub-millimeter spatial resolution. The aim of this study was to develop and evaluate a high temperature resolution MR technique to determine SAR.
DOI: 10.1002/mrm.25792
PubMed: 26073056
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<front><div type="abstract" xml:lang="en">The current practice of calculating the specific absorption rate (SAR) relies on local temperature measurements made using temperature probes. For an accurate SAR measurement, a temperature imaging method that provides high temperature sensitivity is desirable, because acceptable levels of SAR produce small temperature changes. MR thermometry using paramagnetic lanthanide complexes can be used to obtain absolute temperature measurements with sub-degree temperature and sub-millimeter spatial resolution. The aim of this study was to develop and evaluate a high temperature resolution MR technique to determine SAR.</div>
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