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Consistent intensity inhomogeneity correction in water–fat MRI
Linköpings universitet, Institutionen för medicinsk teknik, Medicinsk informatik. Linköpings universitet, Tekniska fakulteten. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV.
Linköpings universitet, Institutionen för medicinsk teknik, Medicinsk informatik. Linköpings universitet, Tekniska högskolan. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV.
Linköpings universitet, Institutionen för medicinsk teknik, Medicinsk informatik. Linköpings universitet, Tekniska högskolan. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV.
Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för radiologiska vetenskaper. Linköpings universitet, Medicinska fakulteten. Linköpings universitet, Centrum för medicinsk bildvetenskap och visualisering, CMIV. Region Östergötland, Diagnostikcentrum, Röntgenkliniken i Linköping.
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2015 (engelsk)Inngår i: Journal of Magnetic Resonance Imaging, ISSN 1053-1807, E-ISSN 1522-2586, Vol. 42, nr 2, s. 468-476Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

PURPOSE:

To quantitatively and qualitatively evaluate the water-signal performance of the consistent intensity inhomogeneity correction (CIIC) method to correct for intensity inhomogeneities METHODS: Water-fat volumes were acquired using 1.5 Tesla (T) and 3.0T symmetrically sampled 2-point Dixon three-dimensional MRI. Two datasets: (i) 10 muscle tissue regions of interest (ROIs) from 10 subjects acquired with both 1.5T and 3.0T whole-body MRI. (ii) Seven liver tissue ROIs from 36 patients imaged using 1.5T MRI at six time points after Gd-EOB-DTPA injection. The performance of CIIC was evaluated quantitatively by analyzing its impact on the dispersion and bias of the water image ROI intensities, and qualitatively using side-by-side image comparisons.

RESULTS:

CIIC significantly ( P1.5T≤2.3×10-4,P3.0T≤1.0×10-6) decreased the nonphysiological intensity variance while preserving the average intensity levels. The side-by-side comparisons showed improved intensity consistency ( Pint⁡≤10-6) while not introducing artifacts ( Part=0.024) nor changed appearances ( Papp≤10-6).

CONCLUSION:

CIIC improves the spatiotemporal intensity consistency in regions of a homogenous tissue type. J. Magn. Reson. Imaging 2014.

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2015. Vol. 42, nr 2, s. 468-476
Emneord [en]
water–fat imaging;Dixon imaging;inhomogeneity correction;intensity correction;water;fat quantification
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-112129DOI: 10.1002/jmri.24778ISI: 000358258600026PubMedID: 25355066OAI: oai:DiVA.org:liu-112129DiVA, id: diva2:763667
Merknad

Funding:

Financial support from the Swedish Research Council (VR/M 2007-2884), the Research Council of Southeast Sweden (FORSS 12621), Linkoping University, Lions Research Foundation in Linkoping, Linkoping University Hospital Research Foundations and the County Council of Ostergotland is gratefully acknowledged.

Tilgjengelig fra: 2014-11-16 Laget: 2014-11-16 Sist oppdatert: 2019-06-14

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Andersson, ThordRomu, ThobiasKarlsson, AnetteNorén, BengtForsgren, MikaelSmedby, ÖrjanKechagias, StergiosAlmer, SvenLundberg, PeterBorga, MagnusDahlqvist Leinhard, Olof

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Andersson, ThordRomu, ThobiasKarlsson, AnetteNorén, BengtForsgren, MikaelSmedby, ÖrjanKechagias, StergiosAlmer, SvenLundberg, PeterBorga, MagnusDahlqvist Leinhard, Olof
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