Fig. 4From: Does ultrasound provide any added value in breast contouring for radiotherapy after conserving surgery for cancer?Bland-Altman agreement plots. Breast volume differences were plotted against the mean breast volume for each pair of contouring techniques, with each point representing one patient. The horizontal lines indicate the mean difference (middle line) and the 95 % limits of agreement. The smaller the range between these two limits the better agreement isBack to article page