Clinical validation of three-dimensional ultrasound for abdominal aortic aneurysm
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Clinical validation of three-dimensional ultrasound for abdominal aortic aneurysm. / Ghulam, Qasam M; Kilaru, Sashi; Ou, San-San; Sillesen, Henrik.
In: Journal of Vascular Surgery, Vol. 71, No. 1, 2020, p. 180-188.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Clinical validation of three-dimensional ultrasound for abdominal aortic aneurysm
AU - Ghulam, Qasam M
AU - Kilaru, Sashi
AU - Ou, San-San
AU - Sillesen, Henrik
N1 - Copyright © 2019 The Authors. Published by Elsevier Inc. All rights reserved.
PY - 2020
Y1 - 2020
N2 - OBJECTIVE: Three-dimensional ultrasound (3D-US) examination is a relatively new modality that can be used for abdominal aortic aneurysm (AAA) surveillance, and may offer improved reproducibility over conventional two-dimensional ultrasound (2D-US) examination. The aim of this study was to evaluate the interoperator reproducibility of maximum anterior-to-posterior diameter by nonphysician ultrasound technicians in a typical vascular laboratory setting, on patients with infrarenal AAAs using 3D-US and 2D-US examination.METHODS: A total of 134 consecutive patients with asymptomatic infrarenal AAAs were screened. Of the 134 patients, 28 (21%) were screen failures. From the remaining 106 patients, 3 (2.8%) had missing data and 13 (12.3%) had technically unacceptable image quality. As a result, 90 patients were included for final analysis. Ultrasound image acquisitions were performed during the single visit. The 2D-US images were evaluated at the time of examination by the respective ultrasound technicians who acquired them. All 3D-US images were evaluated offline by both ultrasound technicians after a wash-out period of at least 6 weeks.RESULTS: Excellent interoperator reproducibility was observed for measuring maximum diameter using 3D-US (intraclass correlation coefficient, 0.97), and good agreement among ultrasound technicians (mean difference, -0.08 mm; limits of agreement, -3.17; 3.00 mm). When using 3D-US examination, 74 of the 90 patients (82%) were estimated within 2 mm of interoperator variability. Of 90 patients, 52 (58%) were estimated to be within the same variability by 2D-US examination. Estimating AAA diameter using 3D-US was superior to 2D-US with respect to interoperator reproducibility.CONCLUSIONS: Both 3D-US and 2D-US examination demonstrated good reproducibility among two vascular ultrasound technicians with superior agreement from 3D-US examination. The present results support the broader use of 3D-US in standard AAA surveillance programs.
AB - OBJECTIVE: Three-dimensional ultrasound (3D-US) examination is a relatively new modality that can be used for abdominal aortic aneurysm (AAA) surveillance, and may offer improved reproducibility over conventional two-dimensional ultrasound (2D-US) examination. The aim of this study was to evaluate the interoperator reproducibility of maximum anterior-to-posterior diameter by nonphysician ultrasound technicians in a typical vascular laboratory setting, on patients with infrarenal AAAs using 3D-US and 2D-US examination.METHODS: A total of 134 consecutive patients with asymptomatic infrarenal AAAs were screened. Of the 134 patients, 28 (21%) were screen failures. From the remaining 106 patients, 3 (2.8%) had missing data and 13 (12.3%) had technically unacceptable image quality. As a result, 90 patients were included for final analysis. Ultrasound image acquisitions were performed during the single visit. The 2D-US images were evaluated at the time of examination by the respective ultrasound technicians who acquired them. All 3D-US images were evaluated offline by both ultrasound technicians after a wash-out period of at least 6 weeks.RESULTS: Excellent interoperator reproducibility was observed for measuring maximum diameter using 3D-US (intraclass correlation coefficient, 0.97), and good agreement among ultrasound technicians (mean difference, -0.08 mm; limits of agreement, -3.17; 3.00 mm). When using 3D-US examination, 74 of the 90 patients (82%) were estimated within 2 mm of interoperator variability. Of 90 patients, 52 (58%) were estimated to be within the same variability by 2D-US examination. Estimating AAA diameter using 3D-US was superior to 2D-US with respect to interoperator reproducibility.CONCLUSIONS: Both 3D-US and 2D-US examination demonstrated good reproducibility among two vascular ultrasound technicians with superior agreement from 3D-US examination. The present results support the broader use of 3D-US in standard AAA surveillance programs.
KW - Aged
KW - Aged, 80 and over
KW - Aortic Aneurysm, Abdominal/diagnostic imaging
KW - Asymptomatic Diseases
KW - Female
KW - Humans
KW - Imaging, Three-Dimensional
KW - Male
KW - Observer Variation
KW - Predictive Value of Tests
KW - Prospective Studies
KW - Reproducibility of Results
KW - Ultrasonography
U2 - 10.1016/j.jvs.2019.03.066
DO - 10.1016/j.jvs.2019.03.066
M3 - Journal article
C2 - 31204220
VL - 71
SP - 180
EP - 188
JO - Journal of Vascular Surgery
JF - Journal of Vascular Surgery
SN - 0741-5214
IS - 1
ER -
ID: 250563657