A Novel Method to Adjust Saphenous Vein Graft Lengths Using 3D Printing Models
Background: The optimal length of saphenous vein grafts can be challenging in surgical coronary revascularization. It is the cornerstone for graft patency. In this study, we tried to demonstrate the value of 3D printing in determining optimal saphenous graft length.
Methods: Sixteen patients who underwent bypass surgery with only vein grafts were examined. Patients' measurements of graft lengths were obtained from postoperative CT images and from both 3D print models manually with plastic tubes and via 3D print digital images of Mimics software during segmentation. Another measurement was done using the Fit Centerline tool in the analysis module of Mimics software after segmentation. These 3 measurements were compared.
Results: There was a statistically significant difference between 3 measurement methods for each graft length
(P < .001). Measurements of actual grafts were longer than measurements of 3D printed models manually and segmentation images from software were similar (P > .05).
Conclusion: 3D printing models and their software may be used to determine optimal saphenous graft length and the anastomosis site to decrease operation time. It can be deducted from these results that 3D printing is a promising method for reducing operator dependent variables in adjusting graft size and finding optimal anastomosis sites.
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