Evaluation of gastroesophageal varices with three-dimensional visualization technology / 中华外科杂志

<p><b>OBJECTIVE</b>To observe the prognostic value of Medical Image Three-dimensional (3D) Visualization System (MI-3DVS) in evaluation of the distribution and blood supply of gastroesophageal varices (EGV).</p><p><b>METHODS</b>3D reconstruction was played by MI-3DVS and CT-maximum intensity projection (CT-MIP) respectively on multi slice computed tomography (MSCT) date of 51 patients with EGV from February 2010 to October 2012. The demonstration rate of collateral vessels in spleen and stomach area, EGV typing and the blood supply between the two methods were observed and compared.</p><p><b>RESULTS</b>The demonstration rates of LGV, gastro-renal shunt, splenorenal shunt and PGV showed a high coincidence between the MI-3DVS and CT-MIP (κ = 0.882-1.000), and moderate agreements in SGV and paraesophageal varices (κ = 0.646 and 0.757). The outcome of EGV classification (MI-3DVS vs. CT-MIP) were typeIfor 31 vs. 28 cases, type II for 6 vs. 4 cases, type III for 4 vs. 4 cases and type IV for 6 vs.10 cases, the 2 methods show high agreements (weighted Kappa value of 0.848 and P < 0.01).Significant differences were found in the blood supply distribution among the four types of EGV (χ(2) = 36.647, P < 0.01); and the blood supply of the EGV tended to be a strong correlation with EGV classification (C = 0.769 and 0.744, P = 0.000). There were 12 patients with gastro-renal shunt and 5 patients with Spleno-renal shunt.</p><p><b>CONCLUSIONS</b>MI-3DVS can explicitly determine the location, blood vessel diameter and blood supply of the EGV, which is helpful for us to grab the formation of collateral circulation completely. The 3D reconstruction of MI-3DVS has guidance and current significance in optimizing therapeutic schedule or preoperative planning.</p>

Characteristics of three dimensional reconstruction of the portal vein systems of patients with portal hypertension / 中华消化外科杂志

With the development of modern imaging technologies,three-dimensional (3D) reconstruction techniques based on the computed tomography (CT) or magnetic resonance imaging (MRI) data has been gradually applied in clinical diagnosis and treatment of hepatobiliary diseases.In order to study the characteristics of the 3 D model of portal branches and collateral circulation in various types of portal hypertension,the data of 64-slice spiral CT scan of5 patients with portal hypertension were collected and imported to the abdominal medical image three-dimensional visualization system (MI-3DVS) for sequence segmenting and 3D reconstruction,and then the results of 3D models were compared with operation findings.The 3D models were vividly,visually and clearly displayed the portal system and the collateral circulation,which is helpful in the diagnosis and treatment of the portal hypertension.