ABSTRACT
With the progresses of the research on "Digital Human", more and more information has been needed for the setting up of the three-dimensional digital models of human organs. In the present paper, based on the method of block mapping with a normal-style bump mapping method, we normalized the vector of the surface of the models, computed offset of the texture coordinates and added to them. The projection of the coordinates to the tangential space complemented the disturbance to the vector of models' surface. The method was proposed with bump texture mapping on the surface of the biological models of organs to improve the impression of the visualization of the organ models and to enhance the sense of reality of the models.
Subject(s)
Humans , Models, Anatomic , Models, BiologicalABSTRACT
Objective To explore the diagnosis and treatment efficacy of bronchobiliary fistula due to hepatic cystic echinococcosis.Methods A retrospective evaluation of 39 patients with BBF was performed during 1992 to 2012.We divided the 39 patients into group A treated before 2001 and group B after 2002.A retrospective analysis was made.Results There were three deaths among the 39 BBF patients due to hepatic hydatid disease.The cause of death was septic shock due to severe infection.There were no statistical differences in the basic factors,age (t =0.84,P =0.554),gender (P =1.0),and sputum volume (t =0.98,P =0.703),hydatid diameter (t =1.11,P =0.406),operation time,chest infection (P =1.0),mortality (P =0.235) between the two groups (P ＞ 0.05).While postoperative length of stay(t =7.64,P =0.000),postoperative complications of residual cavity (P =0.001),length of tube drainage(t =6.747,P =0.01),recurrence of bronchial fistula (P =0.022),pleural dissemination (P =0.018),reoperation rate (P =0.049) were all in favour of group B (P ＜ 0.05).Conclusions Surgery is the choice of therapy for BBF due to hepatic hydatid disease,and one-stage procedure is expected to achieve the best outcomes.