Creating Augmented Reality Holograms for Polytrauma Patients Using 3D Slicer and Holomedicine Medical Image Platform.

In traumatology physicians heavily rely on computed tomography (CT) 2D axial scans to identify and assess the patient's injuries after an accident. However, in some cases it can be difficult to rigorously evaluate the real extent of the damage considering only the bidimensional slices produced by the CT, and some life-threatening lesions can be missed. With the development of 3D holographic rendering and extended reality (XR) technology, CT images can be projected in a 3D format through head-mounted holographic displays, allowing multi-view from different angles and interactive slice intersections, thus increasing anatomical intelligibility. In this article, we explain how to import CT scans into holographic displays for 3D visualization and further compare the methodolgy with traditional bidimensional reading.

[Risk Factors for Surgical Site Infection after Conversion from Laparoscopic to Open Cholecystectomy].

Objective To investigate the incidence of surgical site infection(SSI)following conversion from laparoscopic to open cholecystectomy and to analyze the related risk factors. Methods The clinical data of 179 patients who had experienced conversion from laparoscopic to open cholecystectomy in Peking Union Medical College Hospital from January 2014 to August 2019 were analyzed retrospectively.Univariate and multivariate logistic regression analyses were performed to evaluate the associations between clinical variables and SSI. Results The incidence of SSI was 19.0%(34/179)after conversion from laparoscopic to open cholecystectomy.The multivariable analysis demonstrated that preoperative endoscopic retrograde cholangiopancreatography(ERCP)(OR=4.208,95% CI:1.590-11.135,P=0.004)was the only independent risk factor of SSI. Conclusions The incidence of SSI after conversion from laparoscopic to open cholecystectomy increased remarkably,especially in those who had preoperative ERCP.Preventive interventions should be taken to reduce the incidence of SSI.