Abstract
To assess the interobserver variability of cerebral-atrophy measures on CT, three investigators measured the bicaudate ratio (BCR) and the sylvian-fissure ratio (SFR) on 20 CT studies of patients with ischaemic stroke. The intraclass correlation coefficient of BCR measurements was 0.82 [95% confidence interval (CI) 0.75-0.94], and that of SFR measurements 0.69 (95% CI 0.57-0.89). The range of pairwise-calculated Pearson correlation coefficients was smaller for measurement of the BCR (0.89-0.92) than for the SFR measurements (0.66-0.84).
MeSH terms
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Atrophy
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Brain / diagnostic imaging*
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Brain / pathology
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Brain Edema / diagnostic imaging
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Brain Ischemia / diagnostic imaging*
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Caudate Nucleus / diagnostic imaging*
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Caudate Nucleus / pathology
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Cerebellum / blood supply
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Cerebral Infarction / diagnostic imaging
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Cerebrovascular Disorders / diagnostic imaging
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Confidence Intervals
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Humans
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Observer Variation
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Prospective Studies
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Reproducibility of Results
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Septum Pellucidum / diagnostic imaging
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Temporal Lobe / diagnostic imaging*
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Temporal Lobe / pathology
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Tomography, X-Ray Computed*