Fig. 2From: Prostate motion during radiotherapy of prostate cancer patients with and without application of a hydrogel spacer: a comparative studyComparison of vector displacement metrics in the groups with hydrogel and without hydrogel. On each box, the central mark is the median, the edges of the box are the 25th and 75th percentiles, the whiskers extend to maximum ± 2.7 standard deviation (~99 % coverage)Back to article page