A patient-specific proof of concept with a three-dimensionally printed model before performing an endovascular Bentall procedure.

Three-dimensionally (3D) printed models have been increasingly used in medicine. Few reports have focused on prototype experiments, especially in aortic surgery. Although endovascular repairs are routinely performed for thoracoabdominal aortic aneurysms and lesions involving the aortic arch, endovascular treatment of the ascending aorta is still at an early stage of development. Using a 3D model, based on patient computed tomography scans and manufactured by Biomodex (Paris, France), we performed a patient-specific rehearsal of an endovascular Bentall repair to treat an ascending aorta aneurysm involving the aortic root. We achieved a patient-specific proof of concept of a new technique using an in vitro 3D model.