Reproducibility of Ultrasound Assessment of Carotid Plaque Occurrence, Thickness, and Morphology
Background and Purpose Ultrasonography is increasingly used in vascular research, but there is limited information about the reproducibility of the ultrasound method for screening purposes. In this study the reproducibility of ultrasound assessment of carotid plaque occurrence, thickness, and morpho...
Published in: | Stroke |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Ovid Technologies (Wolters Kluwer Health)
1997
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1161/01.str.28.11.2201 https://www.ahajournals.org/doi/full/10.1161/01.STR.28.11.2201 |
id |
crovidcr:10.1161/01.str.28.11.2201 |
---|---|
record_format |
openpolar |
spelling |
crovidcr:10.1161/01.str.28.11.2201 2024-09-15T18:39:23+00:00 Reproducibility of Ultrasound Assessment of Carotid Plaque Occurrence, Thickness, and Morphology The Tromsø Study Joakimsen, Oddmund Bønaa, Kaare H. Stensland-Bugge, Eva 1997 http://dx.doi.org/10.1161/01.str.28.11.2201 https://www.ahajournals.org/doi/full/10.1161/01.STR.28.11.2201 en eng Ovid Technologies (Wolters Kluwer Health) Stroke volume 28, issue 11, page 2201-2207 ISSN 0039-2499 1524-4628 journal-article 1997 crovidcr https://doi.org/10.1161/01.str.28.11.2201 2024-09-05T04:58:58Z Background and Purpose Ultrasonography is increasingly used in vascular research, but there is limited information about the reproducibility of the ultrasound method for screening purposes. In this study the reproducibility of ultrasound assessment of carotid plaque occurrence, thickness, and morphology was examined within the setting of a population health survey. Methods In 1994/1995, 6720 participants in the Tromsø Study, Norway, underwent B-mode ultrasound scanning of the right carotid artery. The between- and within-sonographer reproducibility of ultrasound assessment of plaque occurrence and thickness was estimated by repeated scanning of a random sample of 107 participants. The between- and within-sonographer reproducibility of plaque morphology classification (echogenicity, four categories and heterogeneity, two categories) was determined by repeated reading of videotaped images of 119 randomly selected arteries with plaques. Results Between- and within-sonographer agreement on plaque occurrence was substantial with κ values (95% CI) of 0.72 (0.60 to 0.84) and 0.76 (0.63 to 0.89), respectively. Reproducibility of plaque thickness measurements was moderate, with mean absolute differences ranging between 0.25 and 0.55 mm (coefficients of variation between 13.8% and 22.4%). Agreement on plaque morphology classification was high, with κ values ranging between 0.54 and 0.73. Conclusions Population screening using B-mode ultrasound provides a valuable means for the detection and morphological evaluation of carotid plaques, whereas measurements of plaque thickness are subject to considerable measurement error. Article in Journal/Newspaper Tromsø Ovid Stroke 28 11 2201 2207 |
institution |
Open Polar |
collection |
Ovid |
op_collection_id |
crovidcr |
language |
English |
description |
Background and Purpose Ultrasonography is increasingly used in vascular research, but there is limited information about the reproducibility of the ultrasound method for screening purposes. In this study the reproducibility of ultrasound assessment of carotid plaque occurrence, thickness, and morphology was examined within the setting of a population health survey. Methods In 1994/1995, 6720 participants in the Tromsø Study, Norway, underwent B-mode ultrasound scanning of the right carotid artery. The between- and within-sonographer reproducibility of ultrasound assessment of plaque occurrence and thickness was estimated by repeated scanning of a random sample of 107 participants. The between- and within-sonographer reproducibility of plaque morphology classification (echogenicity, four categories and heterogeneity, two categories) was determined by repeated reading of videotaped images of 119 randomly selected arteries with plaques. Results Between- and within-sonographer agreement on plaque occurrence was substantial with κ values (95% CI) of 0.72 (0.60 to 0.84) and 0.76 (0.63 to 0.89), respectively. Reproducibility of plaque thickness measurements was moderate, with mean absolute differences ranging between 0.25 and 0.55 mm (coefficients of variation between 13.8% and 22.4%). Agreement on plaque morphology classification was high, with κ values ranging between 0.54 and 0.73. Conclusions Population screening using B-mode ultrasound provides a valuable means for the detection and morphological evaluation of carotid plaques, whereas measurements of plaque thickness are subject to considerable measurement error. |
format |
Article in Journal/Newspaper |
author |
Joakimsen, Oddmund Bønaa, Kaare H. Stensland-Bugge, Eva |
spellingShingle |
Joakimsen, Oddmund Bønaa, Kaare H. Stensland-Bugge, Eva Reproducibility of Ultrasound Assessment of Carotid Plaque Occurrence, Thickness, and Morphology |
author_facet |
Joakimsen, Oddmund Bønaa, Kaare H. Stensland-Bugge, Eva |
author_sort |
Joakimsen, Oddmund |
title |
Reproducibility of Ultrasound Assessment of Carotid Plaque Occurrence, Thickness, and Morphology |
title_short |
Reproducibility of Ultrasound Assessment of Carotid Plaque Occurrence, Thickness, and Morphology |
title_full |
Reproducibility of Ultrasound Assessment of Carotid Plaque Occurrence, Thickness, and Morphology |
title_fullStr |
Reproducibility of Ultrasound Assessment of Carotid Plaque Occurrence, Thickness, and Morphology |
title_full_unstemmed |
Reproducibility of Ultrasound Assessment of Carotid Plaque Occurrence, Thickness, and Morphology |
title_sort |
reproducibility of ultrasound assessment of carotid plaque occurrence, thickness, and morphology |
publisher |
Ovid Technologies (Wolters Kluwer Health) |
publishDate |
1997 |
url |
http://dx.doi.org/10.1161/01.str.28.11.2201 https://www.ahajournals.org/doi/full/10.1161/01.STR.28.11.2201 |
genre |
Tromsø |
genre_facet |
Tromsø |
op_source |
Stroke volume 28, issue 11, page 2201-2207 ISSN 0039-2499 1524-4628 |
op_doi |
https://doi.org/10.1161/01.str.28.11.2201 |
container_title |
Stroke |
container_volume |
28 |
container_issue |
11 |
container_start_page |
2201 |
op_container_end_page |
2207 |
_version_ |
1810483769377816576 |