| Three-dimensional ultrasonographic bladder volume measurement: reliability of the Virtual Organ Computer-Aided Analysis technique using different rotation steps. | |
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MedLine Citation:
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PMID: 19546326 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The purpose of this study was to investigate the reliability of Virtual Organ Computer-Aided Analysis (VOCAL; GE Healthcare, Kretztechnik, Zipf, Austria) using the 4 standard rotation steps to measure the bladder volume with 3-dimensional (3D) ultrasonography. METHODS: Using the 4 standard rotation steps of VOCAL, 2 independent observers made 3D volume measurement data sets from the urinary bladder (n = 180). Sets of 30, 20, 12, and 6 planes were obtained from the sequential rotations of 6 degrees, 9 degrees, 15 degrees, and 30 degrees, respectively. The internal contours of the bladders were determined manually. Reliability was evaluated with the intraclass correlation coefficient (ICC), and Bland-Altman plots were generated to examine bias and agreement. One-way analysis of variance was used to compare bladder volume measurements between the angles. P < .05 was considered statistically significant. RESULTS: A high degree of reliability was observed between pairs of different rotation angles (ICC, 0.994-0.999). There was good agreement between all pairs of different rotation angles, with percentages of the mean difference ranging from -0.9% to 1.8%. No significant difference was found for bladder volume measurements by the VOCAL technique with varying rotation steps. Intraobserver and interobserver reliabilities were high (ICC, 0.994-0.998). CONCLUSIONS: Urinary bladder volume measurement by the VOCAL technique using different rotation steps is highly reliable. A plane rotation of 30 degrees produces the fastest result. |
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Authors:
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Chitkasaem Suwanrath; Thitima Suntharasaj; Hemmasak Sirapatanapipat; Alan Geater |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Validation Studies |
Journal Detail:
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Title: Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine Volume: 28 ISSN: 1550-9613 ISO Abbreviation: J Ultrasound Med Publication Date: 2009 Jul |
Date Detail:
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Created Date: 2009-06-23 Completed Date: 2009-07-24 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8211547 Medline TA: J Ultrasound Med Country: United States |
Other Details:
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Languages: eng Pagination: 847-54 Citation Subset: IM |
Affiliation:
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Department of Obstetrics and Gynecology, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand. schitkas@medicine.psu.ac.th |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Analysis of Variance Female Humans Imaging, Three-Dimensional / methods* Organ Size Reproducibility of Results Rotation Urinary Bladder / anatomy & histology*, ultrasonography* User-Computer Interface* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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