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Titolo:
VARIABILITY IN B-MODE ULTRASOUND MEASUREMENTS IN THE ATHEROSCLEROSIS RISK IN COMMUNITIES (ARIC) STUDY
Autore:
CHAMBLESS LE; ZHONG MM; ARNETT D; FOLSOM AR; RILEY WA; HEISS G;
Indirizzi:
UNIV N CAROLINA,DEPT BIOSTAT,COLLABORAT STUDIES COORDINATING CTR CHAPEL HILL NC 27514 UNIV MINNESOTA,SCH PUBL HLTH,DIV EPIDEMIOL MINNEAPOLIS MN 55455 WAKE FOREST UNIV,BOWMAN GRAY SCH MED,DEPT NEUROL WINSTON SALEM NC 27103 UNIV N CAROLINA,SCH PUBL HLTH,DEPT EPIDEMIOL CHAPEL HILL NC 00000
Titolo Testata:
Ultrasound in medicine & biology
fascicolo: 5, volume: 22, anno: 1996,
pagine: 545 - 554
SICI:
0301-5629(1996)22:5<545:VIBUMI>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
CAROTID ATHEROSCLEROSIS; REPRODUCIBILITY; THICKNESS; PLAQUE;
Keywords:
B-MODE ULTRASOUND; QUANTITATIVE IMAGING; RELIABILITY; REPEATABILITY; VARIANCE; MEASUREMENT VARIATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
17
Recensione:
Indirizzi per estratti:
Citazione:
L.E. Chambless et al., "VARIABILITY IN B-MODE ULTRASOUND MEASUREMENTS IN THE ATHEROSCLEROSIS RISK IN COMMUNITIES (ARIC) STUDY", Ultrasound in medicine & biology, 22(5), 1996, pp. 545-554

Abstract

The Atherosclerosis Risk in Communities (ARIC) study is a multicenter, long-term epidemiologic study that uses B-mode ultrasound primarily to measure carotid arterial intima-media wall thickness. To assess thereliability of the measurement process of this application of B-mode technology to population-based research, 36 volunteers from four centers were scanned at three visits, 7-14 days apart. Estimates of the components of variation in the B-mode measurements of artery wall thickness from between-person, between-sonographer, within-sonographer, between-reader and within-reader variation are presented, along with estimates of the correlation R between measures made at repeat visits by different sonographers and read by different readers. The estimates of R for mean intima-media thickness are 0.69, 0.60, 0.54 and 0.66 for the carotid bifurcation, internal carotid, common carotid, and three-segment overall carotid mean, respectively. When these are adjusted to account for differences in between-person variance between the ancillary study and the main ARIC study, the estimated site-specific reliability coefficients appropriate to the ARIC study population are 0.77, 0.73 and 0.70 for mean carotid far-wall intima-media thickness at the carotid bifurcation and the internal and common carotid arteries.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/11/20 alle ore 15:39:24