Correction of susceptibility-induced GRE phase shift for accurate PRFS thermometry proximal to cryoablation iceball

Kickhefel, Antje; Weiss, Clifford; Roland, Joerg; Gross, Patrick; Schick, Fritz; Salomir, Rares Vincent

doi:10.1007/s10334-011-0277-4

Scientific article

English

Correction of susceptibility-induced GRE phase shift for accurate PRFS thermometry proximal to cryoablation iceball

ContributorsKickhefel, Antje; Weiss, Clifford; Roland, Joerg; Gross, Patrick; Schick, Fritz; Salomir, Rares Vincent

Published inMagma, vol. 25, no. 1, p. 23-31

Publication date2012

Abstract

The susceptibility contrast between frozen and unfrozen tissue disturbs the local magnetic field in the proximity of the ice-ball during cryotherapy. This effect should be corrected for in real time to allow PRFS-based monitoring of near-zero temperatures during intervention.

Keywords

Algorithms
Artifacts
Cryosurgery
Cryotherapy/methods
Fourier Analysis
Freezing
Humans
Image Processing, Computer-Assisted
Imaging, Three-Dimensional/methods
Magnetic Fields
Magnetic Resonance Imaging/methods
Magnetics
Models, Statistical
Models, Theoretical
Muscles/pathology
Reproducibility of Results
Temperature

Affiliation

Faculté de médecine / Section de médecine clinique / Département de radiologie et informatique médicale

Research group

Funding

Swiss National Science Foundation - Minimally invasive ablation of liver malignancies using MRgHIFU : Pilot Studies in Clinical Research [CR33I3_143980]

Citation (ISO format)

KICKHEFEL, Antje et al. Correction of susceptibility-induced GRE phase shift for accurate PRFS thermometry proximal to cryoablation iceball. In: Magma, 2012, vol. 25, n° 1, p. 23–31. doi: 10.1007/s10334-011-0277-4

Article (Published version)

Identifiers

PID : unige:43439
DOI : 10.1007/s10334-011-0277-4
PMID : 21898135

ISSN of the journal0968-5243

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Correction of susceptibility-induced GRE phase shift for accurate PRFS thermometry proximal to cryoablation iceball

The susceptibility contrast between frozen and unfrozen tissue disturbs the local magnetic field in the proximity of the ice-ball during cryotherapy. This effect should be corrected for in real time to allow PRFS-based monitoring of near-zero temperatures during intervention.

Technical informations