Fig. 5
![Fig. 5](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40425-016-0149-6/MediaObjects/40425_2016_149_Fig5_HTML.gif)
Link between planning target volume (PTV), spleen dose and T cell count. a) i) Graph showing the PTV for patients receiving a conventionally fractionated regimen (Fract) versus a hypofractionated regimen (Hypo). A subset of patients receiving a conventionally fractionated regimen exhibited a PTV greater than 400 (square symbols). ii) Post-chemoRT blood T cell counts are shown for patients with PTV greater than or less than 400 receiving a fractionated regimen (Fract) versus a hypofractionated regimen (Hypo). b) Relationship between mean spleen dose (Gy) and post-chemoRT blood T cell counts for patients receiving a hypofractionated regimen. Each symbol represents one patient. Key: NS – not significant. ** p < 0.01