Since 1996 the Contrast Media Safety Committee of the European Society of Urogenital Radiology (ESUR) has released 19 guidelines regarding safety in relation to the use of radiographic, ultrasonographic as well as magnetic resonance contrast media. The committee has covered both renal and non-renal adverse events as well as other aspects of contrast media. The present paper is an overview of th...

Previous studies have shown crowding alleviation when target and flankers similarity is reduced. However, in the case of contrast dissimilarity, the findings were inconsistent. This study examined the effect of stimulus contrast, particularly contrast dissimilarity, on both overall performance under crowded conditions and the critical distance-the spatial extent of crowding. To this end, we mea...

current screening programme, indicate that such a cardiovascular screening programme appeals to and attracts a large audience. Persons attracted to such a programme seem to constitute a relatively healthy sample of the population, and this needs to be taken into account in the consideration of these results. However, the risk of developing future atherosclerotic disease in screened elderly men ...