Volume 51, Issue 4 pp. 1200-1209
Original Research

Reliability of 3D texture analysis: A multicenter MRI study of the brain

Daniel Ta BS

Daniel Ta BS

Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Alberta, Canada

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Muhammad Khan BS

Muhammad Khan BS

Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Alberta, Canada

Department of Computing Sciences, University of Alberta, Edmonton, Alberta, Canada

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Abdullah Ishaque BS

Abdullah Ishaque BS

Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Alberta, Canada

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Peter Seres MS

Peter Seres MS

Department of Biomedical Engineering, University of Alberta, Edmonton, Alberta, Canada

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Dean Eurich PhD

Dean Eurich PhD

School of Public Health, University of Alberta, Edmonton, Alberta, Canada

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Yee-Hong Yang PhD

Yee-Hong Yang PhD

Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Alberta, Canada

Department of Computing Sciences, University of Alberta, Edmonton, Alberta, Canada

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Sanjay Kalra MD

Corresponding Author

Sanjay Kalra MD

Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Alberta, Canada

Department of Biomedical Engineering, University of Alberta, Edmonton, Alberta, Canada

Division of Neurology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada

Address reprint requests to: S.K., Division of Neurology, Department of Medicine, University of Alberta, 7-132 F Clinical Sciences Building, 11350 83 Ave., Edmonton, Alberta, T6G 2G3 Canada. E-mail: [email protected]Search for more papers by this author
First published: 18 August 2019
Citations: 18

Abstract

Background

Texture analysis (TA) is an image-analysis technique that detects complex intervoxel statistical patterns. 3D TA has shown potential in detecting cerebral degeneration not perceptible to the human eye in many neurological disorders. The reliability of this method's application in a multicenter study is unknown.

Purpose

To assess the intrasite and intersite reliability of a novel 3D TA method from data acquired systematically from the Canadian ALS Neuroimaging Consortium (CALSNIC).

Study Type

Prospective multicenter data with harmonized MR sequence parameters acquired from five sites.

Population

Six healthy subjects.

Field Strength

3T 3D-MPRAGE and 3D-SPGR T1-weighted MRI of the brain.

Assessment

Voxel-based 3D TA was performed on the whole brain to produce texture maps.

Statistical Tests

Intra- and intersite reliability of texture features was assessed using a two-way mixed-effects model for intraclass correlation coefficients (ICC). ICCs were calculated in a region-of-interest (ROI) analysis of predetermined anatomically relevant areas. A voxelwise approach was used to assess the whole brain.

Results

In the ROI analyses, intrasite reliability was excellent (ICC > 0.75) across most regions and texture features (autocorrelation [autoc], contrast [contr], energy [energ]). Intersite reliability was excellent for most regions with autoc, ranging from fair to excellent for contr, and ICCs ranging from poor to good (<0.40–0.75) for energ. Voxelwise analyses revealed a large range in ICC across the brain for both intrasite and intersite ICCs (0.0–0.90), with higher reliability in the cortical gray matter compared with deeper subcortical structures.

Data Conclusion

Overall, the reliability of 3D TA was highly dependent on texture feature, region studied, and method of analysis (ROI or voxelwise). Intrasite reproducibility was good to excellent, and better than intersite. ROI-based analyses present higher reliability in comparison with voxelwise analyses. Autoc has overall excellent reliability. These factors might be considered when designing future 3D TA studies.

Level of Evidence: 2

Technical Efficacy: Stage 1

J. Magn. Reson. Imaging 2020;51:1200–1209.

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