Three-dimensional ultrasound evaluation of small asymptomatic abdominal aortic aneurysms

K Bredahl; B Sandholt; L Lönn; L Rouet; R Ardon; J P Eiberg; H Sillesen

doi:10.1016/j.ejvs.2014.12.022

Three-dimensional ultrasound evaluation of small asymptomatic abdominal aortic aneurysms

K Bredahl, B Sandholt, L Lönn, L Rouet, R Ardon, J P Eiberg, H Sillesen

Institut for Klinisk Medicin

17 Citationer (Scopus)

Abstract

Objective Non-invasive and reproducible size measurements that correlate well with computed tomography (CT) are desirable in the management of small abdominal aortic aneurysms (AAA). Three dimensional ultrasound (3D-US) technology may reduce inaccuracy because of variations in orientation of the image planes and axis. This study aimed to determine any differences in paired size estimation associated with three 3D-US derived methods using 3D-CT as the gold standard. When CTA was not available, the patients were enrolled anyway to assess 3D-US reproducibility in terms of agreement between two physicians. Methods In the period from 1 March 2013 to 27 February 2014, consecutive patients with a small AAA, <5.5 cm for men and <5.2 cm for women, underwent 3D-US examination and three AAA size measures were obtained: dual plane diameter, diameter perpendicular to the residual sac's centreline and a partial volume. Result In all, 122 consecutive US examinations were performed. Patients were excluded because of inadequate AAA size (n = 11) and for technical reasons (n = 11). Thus, 100 patients (F/M; 20/80) with a median maximum AAA diameter of 46 (range 31-55) mm were analysed. The mean US dual plane diameter and the 3D-US centreline diameter were 2.6 mm and 1.8 mm smaller than the mean 3D-CT centreline diameter, respectively (p =.003). The inter-observer reproducibility coefficient was 3.7 mm for the US dual plane diameter and 3.2 mm for the 3D-US centreline diameter (p = 0.222). For the partial volume, the reproducibility was 8-12%, corresponding to a diameter variability of ±3 mm. The median time used for post-processing of the 3D-US acquisition was 72 (range 46-108) seconds per examination. Conclusion 3D-US demonstrated an acceptable reproducibility and a good agreement with 3D-CT, and has the potential to improve future AAA management through more reliable ultrasound guided size estimates.

Originalsprog	Engelsk
Tidsskrift	European Journal of Vascular and Endovascular Surgery
Vol/bind	49
Udgave nummer	3
Sider (fra-til)	289-96
Antal sider	8
ISSN	1078-5884
DOI	https://doi.org/10.1016/j.ejvs.2014.12.022
Status	Udgivet - 1 mar. 2015

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10.1016/j.ejvs.2014.12.022

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title = "Three-dimensional ultrasound evaluation of small asymptomatic abdominal aortic aneurysms",

abstract = "Objective Non-invasive and reproducible size measurements that correlate well with computed tomography (CT) are desirable in the management of small abdominal aortic aneurysms (AAA). Three dimensional ultrasound (3D-US) technology may reduce inaccuracy because of variations in orientation of the image planes and axis. This study aimed to determine any differences in paired size estimation associated with three 3D-US derived methods using 3D-CT as the gold standard. When CTA was not available, the patients were enrolled anyway to assess 3D-US reproducibility in terms of agreement between two physicians. Methods In the period from 1 March 2013 to 27 February 2014, consecutive patients with a small AAA, <5.5 cm for men and <5.2 cm for women, underwent 3D-US examination and three AAA size measures were obtained: dual plane diameter, diameter perpendicular to the residual sac's centreline and a partial volume. Result In all, 122 consecutive US examinations were performed. Patients were excluded because of inadequate AAA size (n = 11) and for technical reasons (n = 11). Thus, 100 patients (F/M; 20/80) with a median maximum AAA diameter of 46 (range 31-55) mm were analysed. The mean US dual plane diameter and the 3D-US centreline diameter were 2.6 mm and 1.8 mm smaller than the mean 3D-CT centreline diameter, respectively (p =.003). The inter-observer reproducibility coefficient was 3.7 mm for the US dual plane diameter and 3.2 mm for the 3D-US centreline diameter (p = 0.222). For the partial volume, the reproducibility was 8-12%, corresponding to a diameter variability of ±3 mm. The median time used for post-processing of the 3D-US acquisition was 72 (range 46-108) seconds per examination. Conclusion 3D-US demonstrated an acceptable reproducibility and a good agreement with 3D-CT, and has the potential to improve future AAA management through more reliable ultrasound guided size estimates.",

keywords = "Aorta, Abdominal, Aortic Aneurysm, Abdominal, Aortography, Asymptomatic Diseases, Denmark, Female, Humans, Image Interpretation, Computer-Assisted, Imaging, Three-Dimensional, Male, Observer Variation, Predictive Value of Tests, Prognosis, Prospective Studies, Reproducibility of Results, Tomography, X-Ray Computed",

author = "K Bredahl and B Sandholt and L L{\"o}nn and L Rouet and R Ardon and Eiberg, {J P} and H Sillesen",

year = "2015",

month = mar,

day = "1",

doi = "10.1016/j.ejvs.2014.12.022",

language = "English",

volume = "49",

pages = "289--96",

journal = "European Journal of Vascular and Endovascular Surgery",

issn = "1078-5884",

publisher = "Elsevier",

number = "3",

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TY - JOUR

T1 - Three-dimensional ultrasound evaluation of small asymptomatic abdominal aortic aneurysms

AU - Bredahl, K

AU - Sandholt, B

AU - Lönn, L

AU - Rouet, L

AU - Ardon, R

AU - Eiberg, J P

AU - Sillesen, H

PY - 2015/3/1

Y1 - 2015/3/1

N2 - Objective Non-invasive and reproducible size measurements that correlate well with computed tomography (CT) are desirable in the management of small abdominal aortic aneurysms (AAA). Three dimensional ultrasound (3D-US) technology may reduce inaccuracy because of variations in orientation of the image planes and axis. This study aimed to determine any differences in paired size estimation associated with three 3D-US derived methods using 3D-CT as the gold standard. When CTA was not available, the patients were enrolled anyway to assess 3D-US reproducibility in terms of agreement between two physicians. Methods In the period from 1 March 2013 to 27 February 2014, consecutive patients with a small AAA, <5.5 cm for men and <5.2 cm for women, underwent 3D-US examination and three AAA size measures were obtained: dual plane diameter, diameter perpendicular to the residual sac's centreline and a partial volume. Result In all, 122 consecutive US examinations were performed. Patients were excluded because of inadequate AAA size (n = 11) and for technical reasons (n = 11). Thus, 100 patients (F/M; 20/80) with a median maximum AAA diameter of 46 (range 31-55) mm were analysed. The mean US dual plane diameter and the 3D-US centreline diameter were 2.6 mm and 1.8 mm smaller than the mean 3D-CT centreline diameter, respectively (p =.003). The inter-observer reproducibility coefficient was 3.7 mm for the US dual plane diameter and 3.2 mm for the 3D-US centreline diameter (p = 0.222). For the partial volume, the reproducibility was 8-12%, corresponding to a diameter variability of ±3 mm. The median time used for post-processing of the 3D-US acquisition was 72 (range 46-108) seconds per examination. Conclusion 3D-US demonstrated an acceptable reproducibility and a good agreement with 3D-CT, and has the potential to improve future AAA management through more reliable ultrasound guided size estimates.

AB - Objective Non-invasive and reproducible size measurements that correlate well with computed tomography (CT) are desirable in the management of small abdominal aortic aneurysms (AAA). Three dimensional ultrasound (3D-US) technology may reduce inaccuracy because of variations in orientation of the image planes and axis. This study aimed to determine any differences in paired size estimation associated with three 3D-US derived methods using 3D-CT as the gold standard. When CTA was not available, the patients were enrolled anyway to assess 3D-US reproducibility in terms of agreement between two physicians. Methods In the period from 1 March 2013 to 27 February 2014, consecutive patients with a small AAA, <5.5 cm for men and <5.2 cm for women, underwent 3D-US examination and three AAA size measures were obtained: dual plane diameter, diameter perpendicular to the residual sac's centreline and a partial volume. Result In all, 122 consecutive US examinations were performed. Patients were excluded because of inadequate AAA size (n = 11) and for technical reasons (n = 11). Thus, 100 patients (F/M; 20/80) with a median maximum AAA diameter of 46 (range 31-55) mm were analysed. The mean US dual plane diameter and the 3D-US centreline diameter were 2.6 mm and 1.8 mm smaller than the mean 3D-CT centreline diameter, respectively (p =.003). The inter-observer reproducibility coefficient was 3.7 mm for the US dual plane diameter and 3.2 mm for the 3D-US centreline diameter (p = 0.222). For the partial volume, the reproducibility was 8-12%, corresponding to a diameter variability of ±3 mm. The median time used for post-processing of the 3D-US acquisition was 72 (range 46-108) seconds per examination. Conclusion 3D-US demonstrated an acceptable reproducibility and a good agreement with 3D-CT, and has the potential to improve future AAA management through more reliable ultrasound guided size estimates.

KW - Aorta, Abdominal

KW - Aortic Aneurysm, Abdominal

KW - Aortography

KW - Asymptomatic Diseases

KW - Denmark

KW - Female

KW - Humans

KW - Image Interpretation, Computer-Assisted

KW - Imaging, Three-Dimensional

KW - Male

KW - Observer Variation

KW - Predictive Value of Tests

KW - Prognosis

KW - Prospective Studies

KW - Reproducibility of Results

KW - Tomography, X-Ray Computed

U2 - 10.1016/j.ejvs.2014.12.022

DO - 10.1016/j.ejvs.2014.12.022

M3 - Journal article

C2 - 25662155

SN - 1078-5884

VL - 49

SP - 289

EP - 296

JO - European Journal of Vascular and Endovascular Surgery

JF - European Journal of Vascular and Endovascular Surgery

IS - 3

ER -

Three-dimensional ultrasound evaluation of small asymptomatic abdominal aortic aneurysms

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