To discuss the common failures of PHILIPS DR and KODAK DR7500, analyze the working principle and failure phenomenon of the device, and then propose the exclusion and problem-solving methods to prove the accuracy through practice. The paper also focused on the correct use of DR and how the equipment maintenance staff to do a good job of maintenance and preventive maintenance , reduce unexpected failures and prolong the equipment life, provide reference for counterparts involved in the DR maintenance

Objective To discuss the work modes of PACS in radiology department.Methods New work flow was established to integrate all equipments of radiology department into a system by PACS,so as to implement the transmission and storage of image data.Results The application of PACS resulted in promoted integration and informatized management & quality inspection in radiology department.Conclusion With PACS,the work flow of radiology department is optimized,and the medical quality and work efficiency are enhanced greatly.

The islet secretion function in 42 clinically diagnosed diabetic ketosis and ketoacidosis pa- tients,aged 25～39 year-old,were studied.The results showed that the acute insulin responses to L-ARG (AIRarg) was significantly reduced in patients compared to control.As disease prolonged,AIRarg de- creased gradually.In the patients less than three months,the acute insulin responses to glucose(AIRglu) were markedly reduced,although the AIRarg were still sustained to some extent.The fasting blood insulin levels,in the patients more than three months were not different from controls,but C-peptide levels were significantly lower than those of controls.However,the C-peptide responses to L-ARG stimulation were not as evident as the insulin responses.The results suggested that impairment of the insulin secretion exist of in the early stage of DM,and exaggerated as the disease prolonged.Terapy of this type of diabetes mellitus de- pended mainly on insulin.

ObjectiveTo screen for proteins related to invasive and metastatic potential of ovarian cancer.MethodsThe nude mice were intraperitoneally injected with the human ovarian cancer 3AO cell line.The metastatic tumors were isolated and cultured in vitro.The cell lines were established from tumors and transplanted intraperitoneally for several passages.Invasive potential of cell lines was evaluated by cell adhesion and matrigel invasion assays.Lysates from different cell lines with high or low invasive potential were analyzed by surface enhanced laser desorption/ionization-time of flight-mass spectrometry(SELDI-TOF-MS)and protein-chip array technology.The proteomic fingerprint patterns were compared. ResultsThe subclones 3AOF3 and 3AOF4 were isolated from repeated passaging in vivo and vitro,and showed higher invasive capacity than 3AO cells.By comparing their proteomic fingerprints,9 distinct proteins (3494,3831,8121,8293,9123,9332,10 184,15 436 and 17 134 at m/z value) were found,which were expressed only in 3AO cells.On the contrary,1 distinct protein (4360 at m/z value) was expressed only in 3AO F3-4 cells,and 2 distinct proteins (1842 and 3145 at m/z value) were expressed only in 3AO F2-4 cells.Additionally,6 distinct proteins (1236,5476,5649,6575,6897 and 7016 at m/z value) and a mass cluster (13 794 and 14 027 at m/z value)were expressed in all 3AO and 3AOF1-4 cells,while the amount of protein was different.ConclusionBy comparing the proteomic fingerprints of isogenic ovarian cancer cells with different invasive potential,a group of proteins are identified which are correlated with high invasive and metastatic potential.

Objective The purpose of this study is to investigate the surgical procedures and curative effect through a small incision on both sides of the scapula for surgical resection the ribs tumor which located un -der ventral surface of the scapula .Methods The group included 11 patients,6 males and 5 females,aged 18 to 49 years.Lesions were bilateral scapula deep square 2~4 single rib bone tumors .Among them there were five ca-ses of fibrous dysplasia ,case of bone cyst ,2 cases of plasma cell tumors and metastatic tumors in 3 cases.Surgery incision through cross-scapular ,to determine which lesions ribs ,cutting the lesions on both sides of the stripping and junction.Results The group obtained a satisfactory excision extension ,one case appeared hemopneumotho-rax postoperatively.Secondly,none of patients occured local recurrence .Thirdly,two patients with metastatic carci-noma died after one year because of multiple metastases .Conclusion Straddling scapular notch is the ideal way to cut off the rib tumor of ventral surface of the scapula .Possessing advantages of a little damage and effect on the function,and rapid recovery .

Objective To study the optimal dose of esmolol for maintaining cardiovascular stability in patients with hypertension during tracheal extubation. Methods In post-anestheisa care unit, hypertensive patients after general anesthesia meeting the extubation criteria were included. Patients were divided into 2 groups according the age: group Ⅰ (>65 years old for the elderly hypertensive, 21 cases), and groupⅡ(≤65 years old for the non-elderly hypertensive, 22 cases). All the patients received esmolol bolus before sputum suction and tube extraction, and the tracheal extubation were extubated 2 minutes after esmolol bolus. The systolic blood pressure, diastolic blood pressure and heart rate were was recorded before tracheal extubation, 2 min after esmolol bolus, at the time of sputum suction extubation, 1 min after tracheal extubation, 3 min after tracheal extubation and 5 min after tracheal extubation. Esmolol dose was determined by the up and down method. Initial dose was 0.5 mg/kg, in accordance with the arithmetic dose (0.2 mg/kg) increasing or decreasing progressively. In negative results (the systolic blood pressure at extubation or 5 min after extubation ≥ 20% of the base, or the systolic blood pressure at sputum suction extubation>180 mmHg, 1 mmHg=0.133 kPa) esmolol dose increased progressively, and in positive results (the systolic blood pressure at extubation or 5 min after extubation<20%of the base) esmolol dose decreased progressively. When the crosspoint (from positive to negative result) reached 6, the study was terminated. Results The median effective doses of esmolol for maintaining cardiovascular stability in groupⅠand groupⅡwere (0.6 ± 0.1) and (0.8 ± 0.1) mg/kg. Conclusions Esmolol can maintain cardiovascular stability in patients with hypertension during tracheal extubation. Median effective dose decreases in older hypertensive patients.

OBJECTIVE To analyze 1000 Hz probe tone tympanometry of middle ear with different volume of fluid, and to evaluate the role of 1000 Hz probe tone tympanometry in the diagnosis of presence of fluid in tympanic cavity. METHODS Tympanometries with 1000 Hz or 226 Hz probe tone were obtained from all the guinea pigs with different volume of fluid in tympanic cavity using GSI33 analyzer and tympanometry curves were analyzed. RESULTS There was a significant difference of the peak pressure of 1000 Hz tympanometry among all test groups and control group. The peak pressure decreased with the increasing of fluid volume in tympanic cavity. CONCLUSION Tympanometry with 1000 Hz probe tone can be used in the diagnosis of fluid in tympanic cavity, and it can be an indicator of volume of fluid in tympanic cavity.

0.05).Conclusion The maximal slow-phase velocity induced by bithermal caloric test failed to decline with aging,implying that the functions of the horizontal semicircular didn't decline with aging.

OBJECTIVE:To simultaneously determine the contents of CIPRO and MNZ in compound ciprofloxacin ear dro_ ps by nodical polyploid UV-spectrophotometry.METHODS:CIPRO and MNZ were nodical absorption at wavelength of350.0nm and this was just the sum of isoabsorptive point of two components while DXM did not absorb UV ray at this point.Therefore350.0nm was adopted as the detecting wavelength for these two components.RESULTS:The average recovery and relative standard deviation of CIPRO were99.7%and1.4%respectively.The average recovery and relative standard de?viation of MNZ were100.7%and1.6%respectively.CONCLUSION:The method is accurate,rapid,simple and sensitive.This method can be used to control the quality of this preparation.

Objective To investigate the association of cytotoxic T lymphocyte associated antigen 4 (CTLA 4) gene polymorphism with type 1diabetesmellitusandautoimmunethyroiddiseases. Methods The A/G phenotype at position 49 of the CTLA 4 gene exon 1 was determined by PCR RFLP method in 33 classic type 1 diabetes patients, 57 latent autoimmune diabetes in adults (LADA) patients, 122 autoimmune thyroid disease patients and 84 healthy control subjects of Chinese Han. Results The frequency of the CTLA 4 G phenotype was significantly higherintype1diabetespatientsthanthatincontrol subjects (55.6% vs 36.9%, P=0.0005). Neither the presence nor the absence of G allele influenced the occurrence of islet autoantibody (ICA) and glutamate decarboxylase antibody (GADA). The strong association of the CTLA 4 G allele with AITDs was showed in our study (66.4% vs 36.9%, P