Figure 4
(A) Sankey diagram showing the change in the extent of tumor removal between the MRI-based and 3D-printed brain tumor model-based plans. Overall, for 12 out of 64 cases (18.8%), the surgical goal was modified after examining the 3D-printed brain tumor model. (PR, partial resection; STR, subtotal resection; GTR, gross total resection; Supra-TR, supra-total resection). (B) The result of the questions evaluating the usefulness of MR images and the 3D-printed model in establishing surgical plans, as scored on a 5-point scale from 1 (not useful) to 5 (very useful). In all questions, the 3D-printed brain tumor model scored higher than the MR images.
