Figure 5
![Figure 5](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1748-717X-6-65/MediaObjects/13014_2011_Article_395_Fig5_HTML.jpg)
Prediction of treatment response using Ktrans from dynamic contrast-enhanced MRI. By using Ktrans, tumor volumes (V), prostate-specific antigen (PSA) and treatment groups as inputs to the back propagation neural network (BPNN) a correlation coefficient of 0.66 (p < 0.001) was found between predicted and measured treatment response (V30).