Ultrashort echo time imaging for quantification of hepatic iron overload: Comparison of acquisition and fitting methods via simulations, phantoms, and in vivo data.


Journal

Journal of magnetic resonance imaging : JMRI
ISSN: 1522-2586
Titre abrégé: J Magn Reson Imaging
Pays: United States
ID NLM: 9105850

Informations de publication

Date de publication:
05 2019
Historique:
received: 27 04 2018
revised: 13 08 2018
accepted: 13 08 2018
pubmed: 26 10 2018
medline: 25 8 2020
entrez: 26 10 2018
Statut: ppublish

Résumé

Current R2*-MRI techniques for measuring hepatic iron content (HIC) use various acquisition types and fitting models. To evaluate the accuracy and precision of R2*-HIC acquisition and fitting methods. Signal simulations, phantom study, and prospective in vivo cohort. In all, 132 patients (58/74 male/female, mean age 17.7 years). 2D-multiecho gradient-echo (GRE) and ultrashort echo time (UTE) acquisitions at 1.5T. Synthetic MR signals were created to mimic published GRE and UTE methods, using different R2* values (25-2000 s R2* accuracy was determined from the relative error and by linear regression analysis. Precision was evaluated using coefficient of variation (CoV) analysis. In simulations, all models had high R2* accuracy (error <5%) and precision (CoV <10%) for all SNRs, shorter ΔTE (≤0.5 msec), and longer TE UTE with TE 2 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019;49:1475-1488.

Sections du résumé

BACKGROUND
Current R2*-MRI techniques for measuring hepatic iron content (HIC) use various acquisition types and fitting models.
PURPOSE
To evaluate the accuracy and precision of R2*-HIC acquisition and fitting methods.
STUDY TYPE
Signal simulations, phantom study, and prospective in vivo cohort.
POPULATION
In all, 132 patients (58/74 male/female, mean age 17.7 years).
FIELD STRENGTH/SEQUENCE
2D-multiecho gradient-echo (GRE) and ultrashort echo time (UTE) acquisitions at 1.5T.
ASSESSMENT
Synthetic MR signals were created to mimic published GRE and UTE methods, using different R2* values (25-2000 s
STATISTICAL TESTS
R2* accuracy was determined from the relative error and by linear regression analysis. Precision was evaluated using coefficient of variation (CoV) analysis.
RESULTS
In simulations, all models had high R2* accuracy (error <5%) and precision (CoV <10%) for all SNRs, shorter ΔTE (≤0.5 msec), and longer TE
DATA CONCLUSION
UTE with TE
LEVEL OF EVIDENCE
2 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2019;49:1475-1488.

Identifiants

pubmed: 30358001
doi: 10.1002/jmri.26325
pmc: PMC6768432
mid: NIHMS1019666
doi:

Substances chimiques

Iron E1UOL152H7

Types de publication

Comparative Study Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

1475-1488

Subventions

Organisme : NIDDK NIH HHS
ID : R01 DK088988
Pays : United States
Organisme : NCI NIH HHS
ID : R25 CA023944
Pays : United States

Informations de copyright

© 2018 International Society for Magnetic Resonance in Medicine.

Références

Magn Reson Med. 2004 Mar;51(3):625-30
pubmed: 15004808
AJR Am J Roentgenol. 2017 Jul;209(1):187-194
pubmed: 28504544
Leuk Lymphoma. 2013 Aug;54(8):1719-23
pubmed: 23163568
Magn Reson Med. 2017 Nov;78(5):1839-1851
pubmed: 28090666
Pediatr Radiol. 2010 Aug;40(8):1360-7
pubmed: 20333511
Blood. 2005 Aug 15;106(4):1460-5
pubmed: 15860670
Semin Hematol. 2001 Jan;38(1 Suppl 1):57-62
pubmed: 11206962
J Magn Reson Imaging. 2015 Dec;42(6):1544-59
pubmed: 25996989
Haematologica. 2004 Oct;89(10):1179-86
pubmed: 15477201
Pediatr Blood Cancer. 2011 Mar;56(3):368-71
pubmed: 21072815
Magn Reson Med. 2016 Aug;76(2):591-601
pubmed: 26308155
Am J Gastroenterol. 2005 Apr;100(4):837-41
pubmed: 15784029
Blood. 2009 May 14;113(20):4853-5
pubmed: 19264677
Magn Reson Med. 2018 Mar;79(3):1579-1585
pubmed: 28643355
Magn Reson Med. 2013 Dec;70(6):1765-74
pubmed: 23359410
Rofo. 2015 Jun;187(6):472-9
pubmed: 25877992
Magn Reson Imaging. 2012 Jul;30(6):799-806
pubmed: 22464453
Magn Reson Med. 2013 Nov;70(5):1319-31
pubmed: 23359327
J Cardiovasc Magn Reson. 2014 Jun 10;16:40
pubmed: 24915987
Am J Hematol. 2014 May;89(5):505-8
pubmed: 24452753
AJR Am J Roentgenol. 2015 Mar;204(3):625-9
pubmed: 25714295
Eur Radiol. 2018 Jun;28(6):2535-2536
pubmed: 29318423
Blood. 1997 Feb 1;89(3):739-61
pubmed: 9028304

Auteurs

Aaryani Tipirneni-Sajja (A)

Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.
Department of Biomedical Engineering, The University of Memphis, Memphis, Tennessee, USA.

Ralf B Loeffler (RB)

Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.

Axel J Krafft (AJ)

Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.
Department of Radiology, Medical Physics, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.

Andrea N Sajewski (AN)

Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.

Robert J Ogg (RJ)

Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.

Jane S Hankins (JS)

Department of Hematology, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.

Claudia M Hillenbrand (CM)

Department of Diagnostic Imaging, St. Jude Children's Research Hospital, Memphis, Tennessee, USA.

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