Liver transplantation (LT) and ethnicity in the United States: the impact of non-alcoholic steatohepatitis

planning with 3D printing group based on the 3D reconstruction of portal venous system (n = 12).The image of MDCT was transferred to D2P software (dicom to print) and saved in a standard format DICOM (digital imaging and communication in medicine).Bone, soft tissue and blood vessels were semi-automatically segmented into separate areas.Segmented regions were combined to create a 3D object.These 3D objects were exported from D2P as STL files.STL files were repaired in 3D design software (Geomagic freeform plus) and a virtual 3D prototype was created.3D virtual image prepared were used to see the exact location and depth of splenic and renal vein as well as surrounding collaterals.Results: In conventional planning group, there were 12 patients (8 males and 4 females) with mean age of 24.00 ± 10.91.The time from day of surgery to the day of discharge from hospital was 7.08 ± 2.53 days.In planning with 3D printing group, there were 12 patients (10 males and 2 females) with mean age of 32.08 ± 16.57 years.The time from day of surgery to the day of discharge in 3D printing group was 7.16 ± 2.20 days.The mean surgical time in planning with 3D printing group was 252.50 ± 11.579 min, which was significantly lower than that of conventional planning group (298.16 ± 12.87 min); P value<0.05.The intraoperative mean blood loss in planning with 3D printing group and conventional planning group were 441.25 ± 44.52 ml and 624.16 ± 123.13 ml respectively; (P valve <0.05).The rate of complication in the planning with 3D printing group and conventional planning group was 16.66% (2/12) and 8% (1/12) respectively.Conclusion: Presurgical planning in 3D printing reduces guesswork and thus it remarkably reduces surgical time, blood loss, minimizes complication and improves surgical outcome.