Magnetic resonance elastography SE-EPI vs GRE sequences at 3T in a pediatric population with liver disease View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2019-03

AUTHORS

Juan S. Calle-Toro, Suraj D. Serai, Erum A. Hartung, David J. Goldberg, Bradley D. Bolster, Kassa Darge, Sudha A. Anupindi

ABSTRACT

PURPOSE: The goal of our study is to compare hepatic stiffness measures using gradient-recalled echo (GRE) versus spin-echo echo planar imaging (SE-EPI)-based MR Elastography (MRE) at 3T used to measure hepatic stiffness in a patients with suspected liver diseases. MATERIALS AND METHODS: This retrospective study included 52 patients with liver disease who underwent a 3T MRE exam including both an investigational SE-EPI-based technique and a product GRE-based technique. Regions of interest (ROI) were placed on the elastograms to measure elastography-derived liver stiffness as well as the area included within the ROIs. The mean liver stiffness values and area of ROIs were compared. RESULTS: The mean liver stiffness was 3.72 kilopascal (kPa) ± 1.29 using GRE MRE and 3.78 kPa ± 1.13 using SE-EPI MRE. Measurement of liver stiffness showed excellent agreement between the two pulse sequences with a mean bias of - 0.1 kPa (range - 1.8 to 1.7 kPa) between sequences. The mean measurable ROI area was higher with SE-EPI (313.8 cm2 ± 213.8) than with the GRE technique (208.6 cm2 ± 114.8), and the difference was statistically significant (P < 0.05). CONCLUSIONS: Our data shows excellent agreement of measured liver stiffness between GRE and SE-EPI-based sequences at 3T. Our results show the advantage of a SE-EPI MRE sequence in terms of image quality, ROI size and acquisition time with equivalent liver stiffness measurements as compared to GRE-MRE sequence. More... »

PAGES

894-902

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00261-018-1884-6

DOI

http://dx.doi.org/10.1007/s00261-018-1884-6

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1111048917

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/30600386


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41 schema:description PURPOSE: The goal of our study is to compare hepatic stiffness measures using gradient-recalled echo (GRE) versus spin-echo echo planar imaging (SE-EPI)-based MR Elastography (MRE) at 3T used to measure hepatic stiffness in a patients with suspected liver diseases. MATERIALS AND METHODS: This retrospective study included 52 patients with liver disease who underwent a 3T MRE exam including both an investigational SE-EPI-based technique and a product GRE-based technique. Regions of interest (ROI) were placed on the elastograms to measure elastography-derived liver stiffness as well as the area included within the ROIs. The mean liver stiffness values and area of ROIs were compared. RESULTS: The mean liver stiffness was 3.72 kilopascal (kPa) ± 1.29 using GRE MRE and 3.78 kPa ± 1.13 using SE-EPI MRE. Measurement of liver stiffness showed excellent agreement between the two pulse sequences with a mean bias of - 0.1 kPa (range - 1.8 to 1.7 kPa) between sequences. The mean measurable ROI area was higher with SE-EPI (313.8 cm2 ± 213.8) than with the GRE technique (208.6 cm2 ± 114.8), and the difference was statistically significant (P < 0.05). CONCLUSIONS: Our data shows excellent agreement of measured liver stiffness between GRE and SE-EPI-based sequences at 3T. Our results show the advantage of a SE-EPI MRE sequence in terms of image quality, ROI size and acquisition time with equivalent liver stiffness measurements as compared to GRE-MRE sequence.
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