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Titolo:
Investigation of the factors responsible for burns during MRI
Autore:
Dempsey, MF; Condon, B; Hadley, DM;
Indirizzi:
So Gen Hosp, Inst Neurol Sci, Glasgow G51 4TF, Lanark, Scotland So Gen Hosp Glasgow Lanark Scotland G51 4TF gow G51 4TF, Lanark, Scotland
Titolo Testata:
JOURNAL OF MAGNETIC RESONANCE IMAGING
fascicolo: 4, volume: 13, anno: 2001,
pagine: 627 - 631
SICI:
1053-1807(200104)13:4<627:IOTFRF>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
METALLIC IMPLANTS; FERROMAGNETISM; COMPATIBILITY; ARTIFACTS; DEVICES; VIVO;
Keywords:
MR safety; burns/thermal injuries; patient monitoring; focal heating; RF energy absorption;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Dempsey, MF Western Infirm & Associated Hosp, Dept Nucl Med, Dumbarton Rd,Glasgow G116NT, Lanark, Scotland Western Infirm & Associated Hosp Dumbarton Rd Glasgow Lanark Scotland G11 6NT
Citazione:
M.F. Dempsey et al., "Investigation of the factors responsible for burns during MRI", J MAGN R I, 13(4), 2001, pp. 627-631

Abstract

Numerous reported burn injuries have been sustained during clinical AM procedures. The aim of this study was to investigate the possible factors thatmay be responsible for such burns. Experiments were performed to investigate three possible mechanisms for causing heating in copper wire during AM: direct electromagnetic induction in a conductive loop, induction in a resonant conducting loop, and electric field resonant coupling with a wire (the antenna effect). Maximum recorded temperature rises were 0.6 degreesC for the loop, 61.1 degreesC for the resonant loop, and 63.5 degreesC for the resonant antenna. These experimental findings suggest that, contrary to commonbelief, it is unlikely that direct induction in a conductive loop will result in thermal injury. Burn incidents are more likely to occur due to the formation of resonant conducting loops and from extended wires forming resonant antenna. The characteristics of resonance should be considered when formulating safety guidelines. (C) 2001 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/20 alle ore 18:26:49