Fig. 5From: 3D black blood VISTA vessel wall cardiovascular magnetic resonance of the thoracic aorta wall in young, healthy adults: reproducibility and implications for efficacy trial sample sizes: a cross-sectional studySample size estimates based on pre-specified differences in aortic wall characteristics between groups. Overview of required sample sizes to detect a mean difference between groups of 15, 12, 10, 7 and 5 % in mean aortic lumen area (a), mean total aortic vessel area (b), mean aortic wall area (c), mean aortic wall thickness (d), maximum aortic wall thickness (e) and mean aortic WA/TVA ratio (f) Back to article page