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Titolo:
Accuracy of a miniature intracranial pressure monitor, its function duringmagnetic resonance scanning, and assessment of image artifact generation
Autore:
Macmillan, CSA; Wild, JM; Andrews, PJD; Marshall, I; Armitage, PA; Wardlaw, JM; Easton, VJ; Cannon, J;
Indirizzi:
Univ Edinburgh, Dept Anaesthet, Edinburgh, Midlothian, Scotland Univ Edinburgh Edinburgh Midlothian Scotland burgh, Midlothian, Scotland Univ Edinburgh, Dept Clin Neurosci, Edinburgh, Midlothian, Scotland Univ Edinburgh Edinburgh Midlothian Scotland burgh, Midlothian, Scotland Univ Edinburgh, Dept Phys Med, Edinburgh, Midlothian, Scotland Univ Edinburgh Edinburgh Midlothian Scotland burgh, Midlothian, Scotland
Titolo Testata:
NEUROSURGERY
fascicolo: 1, volume: 45, anno: 1999,
pagine: 188 - 192
SICI:
0148-396X(199907)45:1<188:AOAMIP>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEAD-INJURED PATIENTS; SECONDARY INSULTS;
Keywords:
intracranial pressure monitor; magnetic resonance imaging;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
9
Recensione:
Indirizzi per estratti:
Indirizzo: Macmillan, CSA Ninewells Hosp, Dept Anaesthet, Dundee DD1 9SY, Scotland Ninewells Hosp Dundee Scotland DD1 9SY DD1 9SY, Scotland
Citazione:
C.S.A. Macmillan et al., "Accuracy of a miniature intracranial pressure monitor, its function duringmagnetic resonance scanning, and assessment of image artifact generation", NEUROSURGER, 45(1), 1999, pp. 188-192

Abstract

OBJECTIVE: We examined the accuracy and repeatability of an intracranial pressure (ICP) monitor (Codman MicroSensor; Johnson & Johnson Professional, Inc., Raynham, MA) in a nonmagnetic environment and during magnetic resonance imaging (MRI). The resulting image artifact generation was calculated. JCP monitoring is essential in management of severe head injury, but few ICPmonitoring devices are compatible with use in an MRI scanner. The use of MRI to assess head injury is increasing, and developing safe methods of continuously monitoring ICP may improve patient care. METHODS: A water manometer was used as the standard for comparison. We assessed pressure readings from the ICP monitor in a nonmagnetic environment using a standard and a long connector cable between the pressure transducer and display unit. This long cable permitted testing during MRI sequences because the display unit could be distanced from the magnet. Accuracy was determined during T2-weighted imaging, proton spectroscopy, and diffusion-weighted imaging, and artifact generation was assessed. RESULTS: We found a high degree of accuracy for repeated measurements overa clinical pressure range using both standard and long connector cables outside the MRI room. During MRI scanning, the ICP monitor was accurate during T2 and proton spectroscopy sequences. Accuracy during diffusion-weighted imaging, however, was clinically unacceptable. This ICP monitor creates a reduction in signal-to-noise ratio in the received signal during Ta-weightedimaging and proton spectroscopic imaging, with the obtained images still radiologically interpretable. CONCLUSION: The Codman ICP monitor is sufficiently accurate and free of artifact generation to be used during most clinical MRP applications. This could enhance patient monitoring and safety.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/07/20 alle ore 03:49:14