A, Measurement of the angle between the TS-OP line and the hard palate in the lateral scout view of the brain CT (black arrow). A, Measurement of the angle.

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High-signal-intensity lesions on T2-weighted MR images
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A, Measurement of the angle between the TS-OP line and the hard palate in the lateral scout view of the brain CT (black arrow). A, Measurement of the angle between the TS-OP line and the hard palate in the lateral scout view of the brain CT (black arrow). B, Measurement of the angle formed by the ACPC line and the hard palate (white arrow) to calculate the angle difference between the TS-OP line and the ACPC line in the midsagittal T1-weighted brain MR image. Y.I. Kim et al. AJNR Am J Neuroradiol 2009;30:1704-1708 ©2009 by American Society of Neuroradiology