LAUSR

With the development of computer medical imaging technology, three-dimensional technology has been gradually applied in medicine. We try to investigate the application value of 3D technology in the preoperative evaluation of retroperitoneal tumors. The clinical data of 70 retroperitoneal tumor cases admitted to the clinical center were retrospectively analyzed. The preoperative abdominal CT images were converted to 3D images using XMQB liver 2.0 software. These 3D images were imported into XMQB-I human organ model 3D printing equipment, and physical models facilitate preoperative evaluation and surgical strategy. The reestablished models were compared with the actual conditions during the operation. 3D imaging was completed in all the 70 cases, containing 24 cases in the left abdominal cavity, 26 cases in the right abdominal cavity, 5 cases in the pelvic cavity, and 15 cases in the multi-sites. Also, 3D printing was successfully carried out in 20 cases. The 3D imaging and 3D printing models could stereoscopically, clearly and objectively display the spatial relationships of the tumor with surrounding organs and vessels. The operation was successfully performed on all the 70 cases without death during the preoperative period. 3D technology could accurately evaluate the retroperitoneal tumors at different positions before the operation, showing a certain value in making the preoperative strategy.