This paper mainly introduces the material composition and structure of two kinds of compound tabletop which currently used in large medical imaging equipment, also introduces the proper material choosing and production processing, together with the advantage and shortage of this two kinds of tabletop and different application occasion.
Construction Materials ; Diagnostic Imaging ; instrumentation ; Durable Medical Equipment

BACKGROUND: Human leukocyte antigen-E (HLA-E) is one of non-classical HLA class I genes. Up to now, the polymorphism analysis is mainly aimed at the variation in exon 3 of HLA-E, which determines HLA-E*01:01 or HLA-E*01:03. However, the identification of the full-length HLA-E and its novel alleles is rare reported.OBJECTIVE: To establish the method of identification of HLA-E genomic full-length sequence, and to identify its novel alleles in healthy blood donors in Shenzhen, China.METHODS: Peripheral blood DNA samples were extracted from the subjects, and the amplified primers and sequencing primers in conserved regions were designed according to the sequences of HLA-E published in the IMGT/HLA database.A high-fidelity reaction system was used to amplify the genomic full-length of HLA-E, followed by sequencing,assembling, confirming and typing.RESULTS AND CONCLUSION: Herein, we successfully established the method for amplifying genomic full-length sequence and sequence-based typing. Two novel HLA-E alleles were nominated by WHO HLA Nomenclature committee as HLA-E*01:01:01:06 and HLA-E*01:01:01:07. Compared with the most related allele HLA-E*01:01:01:01,HLA-E*01:01:01:06 had one nucleotide change at nt-26(G->T) in 5'-promoter, and HLA-E*01:01:01:07 had one nucleotide change at nt3345(T->C) in 3'-UTR. The polymorphism data of genomic full-length HLA-E in Chinese individuals need to be filled, and the method we developed here supplies the key technique for the further studies.

Objective To explore the nutrition condition improvement function of Jianpihuazhuoshengxue mixture to the long-term maintenance hemodialysis patient. Methods Before the treatment, to determine the nutrition condition of 43 cases dialysis patient that are divided to treatment group and control group. The two groups are all dialyze, the treatment group are added of Jianpihuazhuoshengxue mixture. To measure nutrition condition of the two groups again after one treatment course. Results and Conclusion Jianpihuazhuoshengxue mixture can remarkably raise the dialysis patient's nutritional level, especially the plasma albumin level. Possibly the mixture improvement the nutrition condition of dialysis patient mainly through raising the plasma albumin level, thus improve quality of life of the dialysis patient.

BACKGROUND:Chitosan (CS) holding a good biocompatibility, biodegradability, antibacterial property and hemostasis effect cannot only promote wound healing and tissue repair, but also exhibit sustained-control release when carrying berberine hydrochloride (Bh). Therefore it functions as an excellent antibacterial and hemostatic material. OBJECTIVE:To prepare the porous CS/Bh composite xerogel and observe its antibacterial and hemostatic properties. METHODS:The porous CS/Bh composite xerogel was prepared using freeze-drying method, and its microstructure was characterized by scanning electron microscope and Fourier transform infrared spectrometer. The biocompatibility was detected through MTT assay and the in vitro antibacterial and hemostatic properties were observed through antibacterial test and blood clotting index. RESULTS AND COCNLUSION:The porosity of the CS/Bh composite xerogel was 83.1%-90.5%and almost degraded after 72 hours of immersion in PBS. The in vitro antibacterial and hemostatic properties of the composite xerogel were significantly better than those of CS, which were enhanced with the Bh content increasing. Additionally, the CS/Bh (10%) composite xerogel showed the best hemostatic and antibacterial abilities in vitro. To conclude, the CS/Bh composite xerogel possesses a good biocompatibility and strong hemostatic and antibacterial abilities, which is a promising postoperative antibacterial and hemostatic material.

Objective To investigate the measurement standards and clinical application of observing anatomical morphologies and contractile function of puborectalis muscle on pelvic floor parasagittal plane by endoluminal two-dimensional ultrasonography.Methods The thickness and thickening rate of puborectalis muscle of 78 young nulliparous women were measured on pelvic floor parasagittal plane at three levelsurethral level (anterior),vaginal level (central) and rectal level (posterior),both at rest and during contraction.And the thickening rates of these parts during contraction were compared with each other.Interclass correlation coefficients were calculated to evaluate the consistency of the datas.Results At rest,thickness of anterior part of the left was (9.23 ± 0.20)mm,and that of the right was (8.99 ± 0.20)mm.During contraction,thickness of anterior parts of bilateral puborectalis muscle were significantly thicker than that of central or posterior parts (P ＜0.05).The interclass coefficients were more than 0.93 and 0.83.Conclusions The endoluminal two-dimensional ultrasonography can be used to observe morphologies and contractile function dynamically of puborectalis on pelvic floor parasagittal plane.It is simple,reproducible and worthy of clinical promotion.

With the increasing of doctor-patient conflicts,the communication between them gradually becomes a critical element in medical service activities.How to improve the doctor-patient communication is an important content in resident communication skill training.Oncology is a developing discipline with fast development and high risk and residents in oncology department need more communications with patients in the era which individualized treatment is emphasized.Systematization and institutionalization of the training system of doctor-patient communication is beneficial to popularizing doctor-patient communication experiences,protecting the rights and interests of them and ensuring the smooth process of medical treatment.

Objective To explore the effect of continuous nursing based on WeChat public platform on the patients with high risk of pressure ulcers. Methods Selecting 165 pairs of high-risk patients and their caregivers from the emergency department of pressure ulcers in the General Hospital of Chinese People′s Armed Police Forces, and they were divided into control group and experimental group by paired random method. There were 83 pairs in control group, and 82 pairs in experimental group. The control group gave oral education according to the traditional model, and adopted the way of telephone follow-up for continuous nursing. While the experimental group let patients and their family members follow the Wechat public account that specially developed on Wechat platform and get continuous nursing in new models to come true networking health education and communicate with patients and their family members by multi-dimensional nurse. After 3 months intervening, compared patients′quality of life, the care behavior of caregivers and acquisition of knowledge of pressure scores, the incidence of pressure ulcers, degree of satisfaction of high-risk patients and caregivers between the two groups. Results The psychological function score, social function score and quality of life score was respectively ( 67.61 ± 1.67), (58.60 ± 1.52), (50.41 ± 2.70) points in experimental group, and (63.21 ± 1.30), (53.23 ± 1.92), (45.83 ± 2.59) points in control group, the comparative difference of the two groups was statistically significant( t=-4.638,-4.930,-2.749, P<0.05). There was no significant difference in the material life and body function score between two groups(P>0.05). The care behavior of caregivers score and pressure sores knowledge score was respectively (50.84 ± 1.92), (27.83 ± 1.48) points in experimental group, and (46.43 ± 2.40), (19.28 ± 1.31) points in control group, the comparative difference of the two groups was statistically significant (t=-3.192,-9.738, P<0.05 or 0.01). The incidence of pressure ulcers was 15.9%(13/82) in experimental group, significantly lower than that in control group (50.6%, 42/83), two groups was statistically significant (χ2=22.413, P<0.01). The satisfying degree and scores of patients or caregivers for follow-up form, nursing service attitude, follow-up content and the total score was respectively (24.83 ± 3.11), (24.10 ± 2.55), (25.03 ± 2.12), (76.23 ± 2.17) points in experimental group, and (18.34 ± 1.41), (17.41 ± 1.34), (19.85 ± 1.92), (63.25 ± 3.03) points in control group, the comparative difference between two groups had statistical significance (t=-7.797--4.061, all P<0.01). Conclusions Utilizing Wechat public platform continuity of care for patients at high risk of pressure ulcers can improve the patients quality of life, reduce the incidence of pressure ulcers, improve the efficient communication of nurses and patients, and enhance the degree of satisfaction of the patients. This method is convenient, shortcut, economic, practical and worthy for clinical use and promotion .

Objective　To explore the effect of video-assi sted thoracic surgery (VATS) on common diseases of chest. Methods　Video-assisted thoracoscopic surgery was performed on 131 patients with ches t diseases from April 1994 to December 2000 in which 109 cases were spontane ous pneumothorax and hemothorax, 10 pulmonary tuberculoma, 5 pulmonary carcinoma , 3 esophageal carcinoma, 2 localized benign mesothelioma, 1 pulmonary hamartoma and 1 myasthenia gravis. Results　There was no operative death in all cases. Four patients with spontaneous pneumothorax complicated persist ent air leak(more than 7 d) and 1 patient with hemopneumothorax formed hemoth orax after the operation, which was stopped by the second VATS. The others recov ered well without any postoperative complications. Conclusion　 VATS is characterized by safety and mild tissue injury in the operation, and les s pain, fewer complications, rapid recovery and short duration of hospitalizatio n after the operation.

Background and purpose:Previous studies have shown that Bubl was a critical component of the spindle checkpoint.Paclitaxel sensitivity was considered to be dependent on the functionality of this spindle checkpoint.This study investigated the effects of pEGFP-Bubl-shRNA plasmid stably transfected into the cell cycle and its sensitivity in human ovarian cancer cell line A2780.Methods:After the pEGFP-Bubl-shRNA plasmid and empty plasmids were constructed.they were transfected into A2780 cells by the Lipofectamine 2000~(TM).The nontransfected cells were the control.RT-PCR and Western blotting were used to determine the target gene and protein expression.The rate of proliferation inhibition was tested by an MTT assay,apoptosis and cell cycles were determined by flow cytometry,and the mitotic index was determined bv Hoechst33342 dye.Results:RT-PCR and Western blotting showed that pEGFP-Bubl-shRNA/A2780 group displayed a low expression of Bubl compared to the A2780 and pEGFP-Cl/A2780 group(P＜0.05).The sensitivity of the pEGFP-Bubl-shRNA/A2780 group was significantly lower than the non-transfccted and pEGFP-Cl/A2780 cells(P＜0.05).Flow cytometry revealed that the rates of G2/M phase and apoptosis were significantly lower in the pEGFP-Bubl-shRNA/A2780 group than those in the control group (P＜0.05).Conclusion:Bubl plays an important role in the paclitaxel treatment.A down-regulation of Bubl could reduce the drug sensitivity and rate of G_2/M cells in human ovarian cancer cell line A2780.

Objective To investigate the differences of clinical features,pulmonary function tests,chest imaging and prognosis between patients with idiopathic pulmonary fibrosis (IPF) combined with emphysema and without emphysema.Methods A total of 43 patients with IPF and with pulmonary fibrosis and emphysema (CPFE) were selected as observation group,and 40 patients with IPF and without emphysema were selected as control group.The clinical data of two groups of patients,including pulmonary function,partial pressure of oxygen,cellular components of bronchoalveolar lavage fluid (BALF),survival time were retrospectively analyzed and compared between two groups.Results The smoking index was (29 ± 17) pack years in observation group,much higher than that in control group (17 ± 15) pack years,the difference was statistically significant (P ＜ 0.05).The percentage of forced expiratory volume in one second (FEV1) and forced vital capacity (FVC) was (70 ± 6)％ in observation group,significantly lower than that in control group (84 ± 9)％,the difference was statistically significant (P ＜ 0.05).The percentage of diffusion capacity of carbon monoxide (DLCO) in observation group was (43 ± 11)％,significantly lower than that in control group (55 ± 17)％,the difference was statistically significant (P ＜ 0.05).The percentage of lung volume in observation group was (78 ± 12)％,significantly higher than that in control group (63 ± 11)％,the difference was statistically significant (P ＜0.05).The vital capacity was expected to account for partial pressure had no significant difference in percentage and resting arterial oxygen value between two groups (P ＞ 0.05).The total number of BALF cells,macrophages,neutrophils,lymphoeytes and eosinophils ratio had no significant difference between two groups (P ＞ 0.05).Conclusion Smoking is an important risk factor of IPF with emphysema,emphysema does not affect the prognosis of patients with IPF.