Studies on the 3D reconstruction and visualization of paracentesis approach in direct intrahepatic portacaval shunt

To establish a digitalized model of the direct intrahepatic portacaval shunt (DIPS) and provide morphological data for the radiological diagnosis and interventional radiology to reduce the pressure of portal vein. Four hundred serial sectional images from the internal jugular vein superior margin to the edge interior hepatic were chosen from Chinese Visible Human Dataset. Surface and volume reconstruction were performed by 3D Doctor 3.5 software programs on an ordinary personal computer, respectively. The volume rendering and surface rendering were employed to perform data segemention and image edge detection acquisition in reconstruction of internal jugular vein, brachiocephalic vein, superior vena cava, heart, inferior vena cava, hepatic vein and portal vein, and computer 3D reconstruction of DIPS pathway. Meanwhile, it can display run and distribution characteristics and interactive spatial structure relationship in intrahepatic venous lines from any position and angle, and complete the acquisition of random diameter and angle data for 3D reconstruction which realized 3D stereopsis and measurement on the base of visualized platform. The digital reconstruction DIPS pathway could correctly reflect the complicated anatomic construction characteristics and spatial adjacent relationship of intrahepatic venous lines, which provided 3D morphology reference of image diagnostics and interventional therapy for DIPS.