Key result
Computed tomographic scan measurement of thoracic aortic aneurysms showed a mean difference of +/-0.88 mm, with significant inter-observer differences between some observers (P<0.05).
Why the study?
What is the inter- and intra-observer reproducibility of thoracic aortic diameter measurements using computed tomographic scans?
Population
50 pre-selected computed tomographic scan images of aneurysmal segments of the thoracic aorta
Comparison
Measurement of minimum aortic diameter using a… vs Inter- and intra-observer comparisons
Design
Other
Authors
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Supports single-observer CT surveillance; leaves open standardization of protocols to reduce inter-observer variability in research.
Observational (n=50)
What is the inter- and intra-observer reproducibility of thoracic aortic diameter measurements using computed tomographic scans?
Effect estimate: mean difference +/-0.88 mm
p-value: p=< 0.05
Calliper measurement of thoracic aortic aneurysms on CT scans is acceptable for surveillance but is most accurate when performed by a single observer due to significant inter-observer variability.
Shimada et al. (1999) conducted an observational in Thoracic aortic aneurysms (TAA) (n=50). Computed tomographic scan measurement of aortic diameter vs. Inter- and intra-observer comparisons was evaluated on Inter- and intra-observer variability of minimum aortic diameter measurement (mean difference +/-0.88 mm, p=< 0.05). Computed tomographic scan measurement of thoracic aortic aneurysms showed a mean difference of +/-0.88 mm, with significant inter-observer differences between some observers (P<0.05).
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