0.05).The maximum deviation on the liver was 4.49%.The CT value error of each tissue and organ was less than 5%between phantom and human, which is reaching the standard of experiment.Conclusion:The Chinese anthropomorphic chest phantom can be used to study of low-dose CT based on objective evaluation criteria.

Disability insurance is one of main component of isurance. This paper made comparison of disability standard of insurance among some countries and regions and drawn serveal chracteristics. With the review of Chinese Disability Standard for Insurance (1998 version),implications and strategies had been proposed for further revision.

SHP-1 is the protein tyrosine phosphatase which is mainly expressed in the cytoplasm of hematopoietic-derived cells,and it is the key factor to change the levels of intracellular phosphorylation.SHP-1 can generate different intracellular signals in different cells,and it can play various functions.

Adolescent ; Adult ; Female ; Foot Diseases ; therapy ; Garlic ; chemistry ; Humans ; Male ; Middle Aged ; Moxibustion ; Warts ; therapy ; Young Adult

Dental Impression Materials ; Disinfection

Perineural invasion(PNl) is regarded as a factor associated with local recurrence and an important prognostic factor in pancreatic cancer.Little is known about the mechanism of PNI in Pancreatic cancer.This review summarizes the role of innervation, clinicopathologic factors, lymhatic vessels, vascularity, cytokines, adhesion molecules, some immunoglobulin superfamily members and mucin in PNI.Because PNI is often followed by poor survival.An ear-lier diagnosis can improve pancreatic cancer prognosis.IPEUS,CT scan and immunostaining CK-19, K-ras gene a-nalysis can be used to diagnose perineural invasion pre-, in-tra-or postoperatively.A wide surgical exeresis with an enough lymph nodes clearance together with surrounding connective and nervous tissue can get a better long term survival rate.

This paper introduces the risk classification and listing way of medical devices in the United States, and according to the contents in various situations, FDA provides the requirements for clinical evaluation. At the same time, through the comparative study on the similarities and differences between USA and our country of the clinical evaluation, the paper puts forward some suggestions.
Equipment and Supplies ; standards ; Risk Assessment ; United States ; United States Food and Drug Administration

Ear, Middle ; pathology ; Female ; Granuloma, Plasma Cell ; pathology ; Humans ; Mastoiditis ; pathology ; Middle Aged

Objective This paper has discussed the antibacterial、 antiviral and degrading poison property of TiO2 nanometer spray in air cleaning. Methods Viable count was carried out, the inactivation on hepatitis B antigen (HbsAg) and the degradation of formaldehyde were detected. Results The results demonstrated that the inactivation to Staphylococcus aureus, Escherichia coli were over 99%. Bacillus subtilis var. niger, Candida albicans and hepatitis B antigen(HbsAg) were inactivated to a certain extent. The spray may be used for degrading the formaldehyde in the indoor air. Conclusions These two kinds of TiO 2 nanometer spray may, to a certain extent, inactivate the pathogenic bacteria and HbsAg, and may degrade formaldehyde.

Objective:To investigate the effect of pertuzumab in the treatment of human epidermal growth factor receptor 2 (HER2)-positive breast cancer patients and its effect on the expression of serum nectin-4 and thymidine kinase 1 (TK-1).Methods:110 HER2 positive breast cancer patients treated in Longfu Hospital of Beijing from June 2014 to December 2016 were selected and divided into observation group and control group according to treatment method, 55 cases in each group.The control group was given docetaxel combined with platinum (TP) neoadjuvant chemotherapy, and the observation group was given TP neoadjuvant chemotherapy combined with paltuzumab. After 18 weeks of treatment, the therapeutic effect, serum tumor markers [carbohydrate antigen (CA), CA153 and CA199], immune function, levels of nectin-4 and TK-1 and adverse reactions were observed.Results:The total effective rate of the observation group was 83.64%(46/55), which was significantly higher than that of the control group 58.18%(32/55), with statistically significant difference ( P<0.05). After treatment, the levels of CA125, CA153 and CA199 in the two groups were decreased, and the difference was significant in the observation group ( P<0.05); after treatment, the levels of CD3 + , CD4 + , CD4 + /CD8 + in the two groups were increased, while the levels of CD8 + was decreased, with no significant difference between the two groups ( P>0.05). After treatment, the levels of serum nectin-4 and TK-1 decreased in both groups, and the the decrease in the observation group was significant ( P<0.05). There was no significant difference in digestive system, white blood cell count and cardiac toxicity between the two groups ( P>0.05). Two years follow-up showed that the mortality of the observation group was 3.64%(2/55), and that of the control group was 10.91%(6/55). The mortality of the group was significantly lower than that of the control group ( P<0.05). Conclusions:Pertuzumab combined with TP neoadjuvant chemotherapy has better effect on HER2 positive breast cancer patients, it can effectively inhibit the growth of tumor tissues, reduce the level of tumor markers and the level of nectin-4 and TK-1, and has less influence on the immune response of patients with fewer adverse reactions and lower mortality rate.