Partial nephrectomy is the optimal surgery for early-stage renal tumours. Selective clamping (only clamping those arteries that perfuse maximal tumour and minimal healthy tissue) lowers the risk of excessive bleeding during tumour resection, while safeguarding the remaining healthy tissue’s renal function. To clamp successfully, insight in the patient-specific perfusion zones is necessary, which cannot be provided by CT-scans. Therefore, we propose a 3D renal perfusion model, which we validated