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

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 To investigate the quality of life(QOL),gastrointestinal symptoms and mental status of patients with irritable bowel syndrome(IBS),and to find out the possible factors affecting the patients' QOL.Methods The questionnaires which included three forms were sent to 55 IBS patients and 40 healthy controls recruited from the authors' clinical department.IBS was diagnosed according to the Rome II criteria,and patients with organic diseases were excluded from this study.The nine-item scores of QOL in all cases were calculated by using the disease-specific form included in the questionnaire of QOL.The mental-psychological status in all cases was evaluated by using the Hospital Anxiety and Depression Scale(HAD).The gastrointestinal symptoms in IBS patients were recorded and graded according to the Gastrointestinal Symptom Rating Scale(GSRS).The data mentioned above were analyzed with regression model.Results Patients with IBS had statistically significant lower scores(P

Objective To evaluate the techniques and effects of post-operational surgery of colorectal cancer for metastatic tumor on caudate lobe of liver. Methods For the patients admitted from Jan. 1999 to Jan. 2007 to the Navy General Hospital of PLA and undergone metastasectomy on caudate lobe of liver after colorectal cancer operation, the operative procedure and effects were studied retrospectively. Results A total of 18 cases of metastasectomy on caudate lobe of liver were successfully performed. The mean diameter of the metastases was 6.3cm (3.2-11.3cm). The types of operation included total caudate lobectomy (6 cases), total caudate lobectomy combined with extended hepatectomy (9 cases) and partial caudate lobectomy (3 cases). The mean operative time was 198min (154-360min) and the average intraoperative blood loss was 975ml (400-3250ml). No intraoperative death occurred, while the remarkable complications were found in 5 cases (27.8%). The survival rates of follow up for 1, 3 and 5 years were 83.3%, 61.1% and 27.8%, respectively. Conclusions The metastases on caudate lobe of liver after colorectal carcinoma resection usually involve all the hepatic portals. Surgical resection, though sophisticated in technique, remains to be a safe and effective treatment, and the first choice for treating metastases.

[Objective]To observe the effect of composite(AACB/BMP/bFGF)of allogeneic antigen-extracted cancellous bone(AACB),bone morphogenetic protein(BMP)and basic fibroblast growth factor(bFGF)on the repair of defective and necrotic areas of the femoral head,and evaluate the revaseularization the femoral head defect and necrosis model using liquid nitrogen,and randomly divided into 3 groups with 12 femoral heads in each group,which were implanted with nothing(group A),AACB/BMP(group B)and AACB/BMP/bFGF(group C)respectively.Every femoral head was implanted with about AACB 0.33 g,BMP 12.5 mg and bFGF 2000 U.Two canines were sacrificed respectively at 3th,6th,and 12th weeks after operation in every group.Histologically,immunohitochemical vessel staining,vessel count and vessel surface area image analysis,calcium content and the correlation between revascularization effect and calcium content were investigated in the femoral heads after the operation.[Result]Histology,the detects were still infilled by fibrillar tissue in group,A;there were a great deal of new bone formed in group B;and the detects were repaired completely in group C 12 weeks after operation.Measurement of vessel count and vessel surface area showed a large quantity of new vessel proliferated around the infilling material in group C on the 3rd week.The vessel count and vessel surface area continuously increased on the 6th week and 12th week.They were more than those of group B and group A at every definite time point(P