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Titolo:
In vivo MRI thermometry using a phase-sensitive sequence: Preliminary experience during MRI-guided laser-induced interstitial thermotherapy of brain tumors
Autore:
Kahn, T; Harth, T; Kiwit, JCW; Schwarzmaier, HJ; Wald, C; Modder, U;
Indirizzi:
Univ Dusseldorf, Inst Diagnost Radiol, D-40225 Dusseldorf, Germany Univ Dusseldorf Dusseldorf Germany D-40225 , D-40225 Dusseldorf, Germany
Titolo Testata:
JMRI-JOURNAL OF MAGNETIC RESONANCE IMAGING
fascicolo: 1, volume: 8, anno: 1998,
pagine: 160 - 164
SICI:
1053-1807(199801/02)8:1<160:IVMTUA>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
SHIFT; TIME;
Keywords:
magnetic resonance, guidance; lasers interstitial therapy; brain neoplasms, therapy; brain neoplasms, MR; interventional MRI;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Kahn, T Univmanyseldorf, Inst Diagnost Radiol, Moorenstr 5, D-40225 Dusseldorf, Ger Univ Dusseldorf Moorenstr 5 Dusseldorf Germany D-40225 ldorf, Ger
Citazione:
T. Kahn et al., "In vivo MRI thermometry using a phase-sensitive sequence: Preliminary experience during MRI-guided laser-induced interstitial thermotherapy of brain tumors", J MAGN R I, 8(1), 1998, pp. 160-164

Abstract

The purpose of this study was the application of the proton-resonance-frequency method to monitor laser-induced interstitial thermotherapy (LITT) in a patient with an astrocytoma WHO II, A phase-sensitive two-dimensional (2D) fast low-angle shot (FLASH) sequence was used to determine the temperature-related phase shifts during LITT. Temperature maps were displayed during therapy with a temporal resolution of 20 seconds. Irradiation was discontinued as soon as the 60 to 65 degrees C isotherm reached the margin of the tumor. A contrast-enhanced MRI study performed immediately after therapy showed a good correlation of the size of an enhancing rim around the lesion with the 60 to 65 degrees C isotherm. The preliminary results of our study indicate that MRI guidance of LITT may be improved by temperature quantification based on the proton-resonance-frequency method.

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Documento generato il 05/12/20 alle ore 01:36:45