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

Glenn Forbes, Allan J. Fox, John III Huston, David O. Wiebers, James Torner

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

PURPOSE: 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. METHODS: Blinded interpretations of a single set of cerebral arteriograms of 55 aneurysms were evaluated by several statistical approaches. RESULTS: 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. DISCUSSION: 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.

Original languageEnglish (US)
Pages (from-to)1407-1415
Number of pages9
JournalAmerican Journal of Neuroradiology
Volume17
Issue number8
StatePublished - Sep 1996

Fingerprint

Observer Variation
Intracranial Aneurysm
Aneurysm
Neck

Keywords

  • Aneurysm, intracranial
  • Cerebral angiography

ASJC Scopus subject areas

  • Clinical Neurology
  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

Interobserver variability in angiographic measurement and morphologic characterization of intracranial aneurysms : A report from the International Study of Unruptured Intracranial Aneurysms. / Forbes, Glenn; Fox, Allan J.; Huston, John III; Wiebers, David O.; Torner, James.

In: American Journal of Neuroradiology, Vol. 17, No. 8, 09.1996, p. 1407-1415.

Research output: Contribution to journalArticle

@article{c7be9a6e9f544037ab6321210ffd43b7,
title = "Interobserver variability in angiographic measurement and morphologic characterization of intracranial aneurysms: A report from the International Study of Unruptured Intracranial Aneurysms",
abstract = "PURPOSE: 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. METHODS: Blinded interpretations of a single set of cerebral arteriograms of 55 aneurysms were evaluated by several statistical approaches. RESULTS: 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. DISCUSSION: 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.",
keywords = "Aneurysm, intracranial, Cerebral angiography",
author = "Glenn Forbes and Fox, {Allan J.} and Huston, {John III} and Wiebers, {David O.} and James Torner",
year = "1996",
month = "9",
language = "English (US)",
volume = "17",
pages = "1407--1415",
journal = "American Journal of Neuroradiology",
issn = "0195-6108",
publisher = "American Society of Neuroradiology",
number = "8",

}

TY - JOUR

T1 - Interobserver variability in angiographic measurement and morphologic characterization of intracranial aneurysms

T2 - A report from the International Study of Unruptured Intracranial Aneurysms

AU - Forbes, Glenn

AU - Fox, Allan J.

AU - Huston, John III

AU - Wiebers, David O.

AU - Torner, James

PY - 1996/9

Y1 - 1996/9

N2 - PURPOSE: 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. METHODS: Blinded interpretations of a single set of cerebral arteriograms of 55 aneurysms were evaluated by several statistical approaches. RESULTS: 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. DISCUSSION: 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.

AB - PURPOSE: 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. METHODS: Blinded interpretations of a single set of cerebral arteriograms of 55 aneurysms were evaluated by several statistical approaches. RESULTS: 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. DISCUSSION: 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.

KW - Aneurysm, intracranial

KW - Cerebral angiography

UR - http://www.scopus.com/inward/record.url?scp=0029817032&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029817032&partnerID=8YFLogxK

M3 - Article

C2 - 8883634

AN - SCOPUS:0029817032

VL - 17

SP - 1407

EP - 1415

JO - American Journal of Neuroradiology

JF - American Journal of Neuroradiology

SN - 0195-6108

IS - 8

ER -