Carel van Wijk

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OBJECTIVE The purpose of this study was to assess the accuracy and measurement variability of automated lesion measurement on CT colonography in comparison with manual 2D and 3D techniques under varying scanning conditions. MATERIALS AND METHODS The study included phantoms (23 phantom objects) and patients (16 polyps). Measurement with sliding calipers(More)
In the International Drinking Water Supply and Sanitation Decade (1981-90), the development of a consensus on the concept of sanitation and the planning and implementation of effective and efficient sanitation programmes was not emphasized. Yet lack of good sanitation is a growing burden and environmental threat. Significant improvement of human health(More)
In a production experiment (Experiment 1) and an acceptability rating one (Experiment 2), we assessed two factors, spatial position and salience, which may influence the production of relational descriptions (such as "the ball between the man and the drawer"). In Experiment 1, speakers were asked to refer unambiguously to a target object (a ball). In(More)
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