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Feasibility and accuracy of a novel automated three-dimensional ultrasonographic analysis system for abdominal aortic aneurysm: comparison with two-dimensional ultrasonography and computed tomography

Title
Feasibility and accuracy of a novel automated three-dimensional ultrasonographic analysis system for abdominal aortic aneurysm: comparison with two-dimensional ultrasonography and computed tomography
Authors
Cho, In-JeongLee, JinyongPark, JinkiLee, Sang-EunAhn, Chul-MinKo, Young-GukChoi, DonghoonChang, Hyuk-Jae
Ewha Authors
조인정이상은
SCOPUS Author ID
조인정scopusscopus
Issue Date
2020
Journal Title
CARDIOVASCULAR ULTRASOUND
ISSN
1476-7120JCR Link
Citation
CARDIOVASCULAR ULTRASOUND vol. 18, no. 1
Keywords
Three-dimensional imagingAbdominal aortic aneurysmSoftware validation
Publisher
BMC
Indexed
SCIE; SCOPUS WOS
Document Type
Article
Abstract
Background Accurate measurement of the maximum aortic diameter (Dmax) is crucial for patients with abdominal aortic aneurysm (AAA). Aortic computed tomography (CT) provides accurate Dmax values by three-dimensional (3-D) reconstruction but may cause nephrotoxicity because of contrast use and radiation hazard. We aimed to evaluate the accuracy of a novel semi-automated 3-D ultrasonography (3-D US) system compared with that of CT as a reference. Methods Patients with AAA (n = 59) or individuals with normal aorta (n = 18) were prospectively recruited in an outpatient setting. Two-dimensional ultrasonography (2-D US) and 3-D US images were acquired with a single-sweep volumetric transducer. The analysis was performed offline with a software. Dmax and the vessel area of the Dmax slice were measured with 2-D US, 3-D US, and CT. The lumen and thrombus areas of the Dmax slice were also measured in 40 patients with intraluminal thrombus. Vessel and thrombus volumes were measured using 3-D US and CT. Results The Dmax values from 3-D US demonstrated better agreement (R-2 = 0.984) with the CT values than with the 2-D US values (R-2 = 0.938). Overall, 2-D US underestimated Dmax compared with 3-D US (32.3 +/- 12.1 mm vs. 35.1 +/- 12.0 mm). The Bland-Altman analysis of the 3-D US values, revealed better agreement with the CT values (2 standard deviations [SD], 2.9 mm) than with the 2-D US values (2 SD, 5.4 mm). The vessel, lumen, and thrombus areas all demonstrated better agreement with CT than with 2-D US (R-2 = 0.986 vs. 0.960 for the vessel,R-2 = 0.891 vs. 0.837 for the lumen, andR(2) = 0.977 vs. 0.872 for the thrombus). The thrombus volume assessed with 3-D US showed good correlation with the CT value (R-2 = 0.981 and 2 SD in the Bland-Altman analysis: 13.6 cm(3)). Conclusions Our novel semi-automated 3-D US analysis system provides more accurate Dmax values than 2-D US and provides precise volumetric data, which were not evaluable with 2-D US. The application of the semi-automated 3-D US analysis system in abdominal aorta assessment is easy and accurate.
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DOI
10.1186/s12947-020-00207-0
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의과대학 > 의학과 > Journal papers
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