Real-time volumetric MR thermometry using 3D echo-shifted sequence under an open source reconstruction platform.
Gadgetron
MR temperature imaging
Parallel imaging
Journal
Magnetic resonance imaging
ISSN: 1873-5894
Titre abrégé: Magn Reson Imaging
Pays: Netherlands
ID NLM: 8214883
Informations de publication
Date de publication:
07 2020
07 2020
Historique:
received:
26
10
2019
revised:
02
04
2020
accepted:
03
04
2020
pubmed:
8
4
2020
medline:
1
12
2020
entrez:
8
4
2020
Statut:
ppublish
Résumé
The aim of this work is to implement real-time 3D MR thermometry for high intensity focused ultrasound (HIFU) monitoring. Volumetric MR thermometry was implemented based on a 3D echo-shifted sequence with short TR to improve temperature sensitivity. The 3D acquisition was accelerated in two phase encoding directions with controlled aliasing in volumetric parallel imaging (CAIPIRINHA). Image reconstruction was run in an open source reconstruction platform (Gadgetron). Phantom experiments showed the proposed volumetric thermometry was comparable to the fiber optical thermometer. In-vivo animal experiments in rabbit thigh showed that the temperature error before and after 4× acceleration was less than 0.65 °C. Finally, real-time 3D thermometry with temporal resolution ~3 s and spatial resolution 2 × 2 × 5 mm Real-time temperature monitoring was achieved in-vivo by using parallel imaging accelerated 3D echo-shifted sequence with Gadgetron reconstruction.
Identifiants
pubmed: 32259587
pii: S0730-725X(19)30660-5
doi: 10.1016/j.mri.2020.04.001
pii:
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
22-28Informations de copyright
Copyright © 2020 The Authors. Published by Elsevier Inc. All rights reserved.