Interobserver variability in angiographic measurement and morphologic characterization of intracranial aneurysms: a report from the International Study of Unruptured Intracranial Aneurysms

G Forbes; A J Fox; John Huston III; D O Wiebers; J Torner

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Interobserver variability in angiographic measurement and morphologic characterization of intracranial aneurysms: a report from the International Study of Unruptured Intracranial Aneurysms

Journal article

Peer reviewed

Interobserver variability in angiographic measurement and morphologic characterization of intracranial aneurysms: a report from the International Study of Unruptured Intracranial Aneurysms

G Forbes, A J Fox, John Huston III, D O Wiebers and J Torner

American journal of neuroradiology : AJNR, Vol.17(8), pp.1407-1415

09/1996

PMID: 8883634

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Abstract

To determine the variability in assessment of the principal inherent characteristics of intracranial aneurysms through the evaluation of interobserver variability for material with uniform quality. Blinded interpretations of a single set of cerebral arteriograms of 55 aneurysms were evaluated by several statistical approaches. Excellent correlations were found for the detection and measurement of aneurysms after adjusting for geometric distortion caused by magnification. Progressively decreasing correspondence was found for factors that characterized morphology, including, in order, determination of margins, assessment of accessory appendages, and identification of a neck. Correction for geometric distortion was the most critical factor that influenced uniform measurement of size. Standards for measurement and morphologic characteristics were subsequently established for use in the International Study of Unruptured Intracranial Aneurysms.

Intracranial Arteriovenous Malformations - diagnostic imaging

Single-Blind Method

Intracranial Aneurysm - diagnostic imaging

Humans

Ischemic Attack, Transient - diagnostic imaging

Male

Vertebral Artery - diagnostic imaging

Radiographic Magnification

Cerebral Angiography - statistics & numerical data

Carotid Arteries - diagnostic imaging

Adult

Female

Retrospective Studies

Aneurysm, Ruptured - pathology

Intracranial Aneurysm - pathology

Aneurysm, Ruptured - diagnostic imaging

Intracranial Arteriosclerosis - diagnostic imaging

Cerebral Angiography - standards

Observer Variation

Radiographic Image Enhancement

Details

Title: Subtitle: Interobserver variability in angiographic measurement and morphologic characterization of intracranial aneurysms: a report from the International Study of Unruptured Intracranial Aneurysms
Creators: G Forbes - Department of Diagnostic Radiology, Mayo Clinic, Rochester, Minn 55905, USA
A J Fox
John Huston III
D O Wiebers
J Torner
Resource Type: Journal article
Publication Details: American journal of neuroradiology : AJNR, Vol.17(8), pp.1407-1415
PMID: 8883634
NLM abbreviation: AJNR Am J Neuroradiol
ISSN: 0195-6108
eISSN: 1936-959X
Publisher: United States
Language: English
Date published: 09/1996
Academic Unit: Epidemiology; Surgery; Injury Prevention Research Center; Neurosurgery
Record Identifier: 9983995032002771

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