Reproducibility of two 3-D ultrasound carotid plaque quantification methods
| Autor: | Antoine Collet-Billon, Robert R. Entrekin, Henrik Sillesen, Gerard Harrison, Martin Græbe |
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| Rok vydání: | 2013 |
| Předmět: |
Male
medicine.medical_specialty Quantification methods Acoustics and Ultrasonics Carotid arteries Biophysics 3 d ultrasound Sensitivity and Specificity Imaging Three-Dimensional Image Interpretation Computer-Assisted Medicine Humans Radiology Nuclear Medicine and imaging Carotid Stenosis Aged Ultrasonography Aged 80 and over Observer Variation Reproducibility Radiological and Ultrasound Technology business.industry Ultrasound Reproducibility of Results Repeatability Middle Aged Image Enhancement Confidence interval Risk stratification Female Radiology business Algorithms Biomedical engineering |
| Zdroj: | Ultrasound in medicinebiology. 40(7) |
| ISSN: | 1879-291X |
| Popis: | Compared with single 2-D images, emerging 3-D ultrasound technologies hold the promise of reducing variability and increasing sensitivity in the quantification of carotid plaques for individual cardiovascular risk stratification. Inter- and intra-observer agreement between a manual, cross-sectional, 2-D freehand sweep and a mechanical 3-D ultrasound investigation of 62 carotid artery plaques is reported with intra-class correlation coefficients (with 95% confidence intervals). Inter-observer agreement was 0.60 (0.29–0.77) for the freehand method and 0.89 (0.83–0.93) for the mechanical 3-D acquisition. The use of semi-automated computerized planimetric measurements of plaque burden has high intra-observer repeatability, but is vulnerable to systematic inter-observer differences. For the 2-D freehand sweep, a considerable contribution to variation is introduced by the scanning procedure itself, that is, the lack of controlled motion along the third dimension. Future implementation of 3-D ultrasound quantification in large-scale studies of inter-individual cardiovascular risk assessment seems justified using the methods described. |
| Databáze: | OpenAIRE |
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