3D-PNCT design and production

Data in BT-TPS were imported to Magics 19.01 (Materialise, Belgium) for digital modeling of the individualized 3D-PNCT. Information about the needle path direction was added to the model. 3D-PNCT was printed out by a 3D light-cured rapid-forming printer (RS6000, Shanghai Liantaiv3D Technology Company Inc., China). 3D-PNCT included surface characteristics of the patient, needle holes, X-axis and Y-axis coordinate registered marks, and the number of simulated needle paths. Three needle holes were used to fix the alignment of 3D-PNCT onto patients.