Standardizing MRI orientation improves reliability of entorhinal and transentorhinal cortical volume measurement
Yi-En Quek1, Yi Leng Fung1, Simon J Vogrin2
1Melbourne School of Psychological Sciences, The University of Melbourne, Parkville, Victoria, Australia.
Abstract:
The current study compared the reliability of manual collateral sulcus depth and entorhinal and transentorhinal cortical volume measurements between native oriented MRI scans versus MRI scans realigned to the hippocampal long axis. Data included 10 participants with two serial 3.0T MRI scans from the Alzheimer's Disease Neuroimaging Initiative. Both collateral sulcus depth and entorhinal and transentorhinal cortical volume measurement reliability improved from the native to the hippocampal oriented scans. Standardizing scan orientation is important to optimize reliability of MRI-derived manual measurements of the entorhinal and transentorhinal cortices. In quantitative MRI studies, aligning scans to a common, normalized orientation is recommended.
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