Magnetic Resonance Imaging Segmentation on the Basis of Boundary Tracking Algorithm in Lung Cancer Surgery.

This work was to study the guiding value of magnetic resonance imaging (MRI) based on the target region boundary tracking algorithm in lung cancer surgery. In this study, the traditional boundary tracking algorithm was optimized, and the target neighborhood point boundary tracking method was proposed. The iterative method was used to binarize the lung MRI image, which was applied to the MRI images of 50 lung cancer patients in hospital.

Dementia among elderly in Shanghai suburb: a rural community survey.

The number of elderly in the world is increasing rapidly, especially in China. The prevalence of dementia among elderly was investigated in a community of Sheshan town, located in the Southwest suburb of Shanghai, China. Face-to-face interviews were conducted to collect relevant information with prepared questionnaires.

[Preparation of acellularized porcine heart valve and seeding of bovine aortic endothelial cells].

Objective: To explore the possibility of detergent acellularized porcine heart valve serving as a scaffold for tissue engineering valve.

Methods: The porcine aortic valves were acellularized by use of trypsin-EDTA. Triton X-100, RNase and DNase treatment.