Correction of proton resonance frequency shift MR-thermometry errors caused by heat-induced magnetic susceptibility changes during high intensity focused ultrasound ablations in tissues containing fat

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
Paul BaronLambertus W Bartels

Abstract

In this study, we aim to demonstrate the sensitivity of proton resonance frequency shift (PRFS) -based thermometry to heat-induced magnetic susceptibility changes and to present and evaluate a model-based correction procedure. To demonstrate the expected temperature effect, field disturbances during high intensity focused ultrasound sonications were monitored in breast fat samples with a three-dimensional (3D) gradient echo sequence. To evaluate the correction procedure, the interface of tissue-mimicking ethylene glycol gel and fat was sonicated. During sonication, the temperature was monitored with a 2D dual flip angle multi-echo gradient echo sequence, allowing for PRFS-based relative and referenced temperature measurements in the gel and T1 -based temperature measurements in fat. The PRFS-based measurement in the gel was corrected by minimizing the discrepancy between the observed 2D temperature profile and the profile predicted by a 3D thermal model. The HIFU sonications of breast fat resulted in a magnetic field disturbance which completely disappeared after cooling. For the correction method, the 5th to 95th percentile interval of the PRFS-thermometry error in the gel decreased from 3.8°C before correction to 2.0-2.3°C af...Continue Reading

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Citations

Dec 29, 2015·International Journal of Hyperthermia : the Official Journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·Lukas WinterThoralf Niendorf
May 6, 2015·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Paul BaronLambertus W Bartels
Nov 27, 2015·The British Journal of Radiology·Alberto BazzocchiUgo Albisinni
May 16, 2015·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Frank F J SimonisCornelis A T van den Berg
Oct 21, 2016·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Le ZhangRosa Tamara Branca
Sep 20, 2018·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Chuanli ChengXin Liu
Oct 7, 2018·Journal of Magnetic Resonance Imaging : JMRI·Shiyang WangAytekin Oto
May 6, 2020·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Mingming WuAxel Haase
Aug 25, 2015·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Pooja GaurWilliam A Grissom
Jun 6, 2017·Journal of Magnetic Resonance Imaging : JMRI·Kagayaki Kuroda
Nov 21, 2020·Journal of Magnetic Resonance Imaging : JMRI·James BlackwellNiall Colgan
Feb 26, 2019·Progress in Nuclear Magnetic Resonance Spectroscopy·Henrik Odéen, Dennis L Parker
Nov 10, 2021·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Alessandro M ScottiKejia Cai
Jun 7, 2017··Lukas WinterGerard C. van Rhoon

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