Expression and significance of Gab2 in colorectal cancer tissues / 中国免疫学杂志

Objective:To investigate the expression and significance of Gab 2 in colorectal cancer tissues .Methods:Immuno-histochemistry was used to detect the expression of Gab 2 in 78 cases of colorectal cancer tissues and 46 cases of the adjacent tissues and to analyze the association of Gab2 expression with the clinicopathologic features of colorectal cancer;The expression of Gab2 in samples from 10 cases of colorectal cancer tissues and matched adjacent nontumorous tissues was detected by Western blot .Results: The results of immunohistochemistry demonstrated that the Gab 2 protein positive expression rate in 78 cases of colorectal cancer was 53.85%;whereas was negative expression or weak in the adjacent tissues , showing a significant difference of comparison within this result (P0.05) .Western blot showed that the Gab2 protein expression of colorectal cancer cases was significantly higher than that of matched adjacent nontumorous tissues ( P<0.05 ).Conclusion: Gab2 was overexpressed in colorectal cancer .Gab2 maybe play an important role in carcinogenesis and progression of colorectal carcinoma .

Tsallis entropy-based prior for PET reconstruction / 生物医学工程学杂志

Maximum a Posteriori (MAP) method has been widely applied to the ill-posed problem of image reconstruction. The choice of prior is the crucial point on MAP methods. However, the most conventional priors will lead to a blurring of the whole image or cause ladder-like artifacts. We therefore proposed a Tsallis entropy-based prior for positron emission tomography (PET) iterative reconstruction in MAP framework. The method uses a Tsallis entropy-based prior to eliminate the uncertainty between prior information and the estimated images. We tested this method in the phantom image, compared it with the traditional prior methods. the results showed that the proposed algorithm could suppress noise and obtain better reconstructed image quality.

Experiences of How to Manage Equipment Maintenance / 医疗卫生装备

Medical equipment maintenance management as an important part of hospital management has always been a difficulty, particularly in small and medium-sized hospital. Because of their weak technical force and the growing diversity, complexity, high-tech modern medical equipment, methods for scientific and effective management are more important. The experiences of how to manage equipment maintenance are introduced.

Discussion on purchase rectification and improvement in hospital equipment department after special treatment / 医疗卫生装备

Anti-commercial bribery in medicine and medical appliances trade is the main work of national special treatment in 2006.This paper discusses the improving methods to establish a long-term mechanism to promote fair competition and resist illegal transactions in purchasing medical equipments or materials.

Discussion on mobile vehicle assembling project for radiation medical examination / 医疗卫生装备

The mobile vehicle for radiation medical examination is a necessary equipment out of the hospital.Because there's no canonical standard,every hospital designs and assembles it according to self requirements.Dust pulmonary disease is the most serious disease with the highest incidence in occupational diseases and the high-KV X-ray shoot is an indispensable medical examination for it.This paper makes a series of research for better assembly of high-KV X-ray shoot apparatus,normal X-ray machines and giant mobile vehicles.