Objective To provide an accessorial reference platform in purchasing medical equipment for the City. Methods The Medical Equipment Selection System(MESS) was designed and developed by combining the medical equipment selection model and selection way with delphi7 based on Windows XP, then a selection open-platform of human-computer interaction was formed. Results The tested index data in which five types of semi -automatic biochemistry analyzer, including SBA-830, SBA-610, CA-958E, AVE-852, Microlab 300, these can prove the system running well and have strong objective and scientific. Conclusion The platform has good stability and sensitivity, which can provide an accessorial decision-making platform for purchasing medical equipment.

The composition and development of foreign army's medical equipments are discussed,of which,medical equipments for satisfying the requirements of informatized war,NBC protection and MOOTW are paid special attention to.Foreign army also tries hard to enhance medical equipment's capabilities in rapid response and theatre survivability.The advices for development of PLA's medical equipment are also put forward based on the analysis on its present situation.

Objective To investigate the image quality,radiation dose and iodine intake of CT pulmonary angiography (CTPA) in patients using low tube voltage (100 kVp) combination of different noise indexes (NI) and low concentration contrast agent.Methods A total of 80 patients with suspected pulmonary embolism (PE) and other pulmonary diseases who had undergone CTPA were divided into four groups (A,B,C and D),with 20 patients in each group.Group A underwent 120 kVp CT scan protocol in combination with NI=25 and 370 mg iodine/ml contrast agent,while groups B,C and D underwent 100 kVp CT scan protocol in combination with NI=30,35,40,and 320 mg iodine/ml contrast agent,respectively.All images were restructured using 60％ adaptive statistical iterative algorithm 2.0.Objective image quality evaluation included CT values of pulmonary artery,noise values of pulmonary artery,signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR).Subjective image evaluation used a 5-point scoring method and was conducted by two independent radiologists.The CT dose index of volume (CTDIvol),dose-length product (DLP) and iodine intake was recorded,and the mean value was calculated.The DLP was converted to the effective dose (ED).Analysis of Variance or Kruskal-Wallis test was used to evaluate the differences among the four groups in terms of image quality,radiation dose and iodine intake.Results There was a significant difference in CT values of pulmonary artery among the groups A,B,C and D (P＜0.05),and the CT values of pulmonary artery of group A was the lowest.There was no significant differences in noises of pulmonary artery,SNR,CNR and subjective indexes scores among the groups A,B,C and D (P＞0.05).There was a significant difference in iodine intake among the groups A,B,C and D,iodine intake of the group A was the highest,iodine intake of the group D was the lowest.The iodine intake of groups B,C and D decreased by 12.4％ (42/340),13.2％ (45/340) and 15.0％ (51/340) relative to group A,respectively.There was a significant difference in radiation dose among the groups A,B,C and D,The CTDIvol,DLP and ED of group D decreased by 45.3％ (3.9/8.6),48.6％ (120/247) and 48.3％ (2.02/4.18) relative to group A,respectively (P＜0.01).Conclusion Low tube voltage combination with high NI value and low concentration contrast agent can more effectively reduce the radiation dose and iodine intake for CTPA while maintaining diagnostic image quality.

Tiangui,a specific terms in TCM,is a special material that can regulate human reproduction and development. It stems from congenital kidney essence and is nourished by acquired nutrients with the nature of time-limit,rhythmicity and status. Tiangui promotes abundant CHONG meridian with unobstructed REN meridian,participates in the production and regulation of menstruation,and prepares for conception of women. According to the holism of TCM,person is a unified whole,Tiangui's generation and functional role must be completed under the condition of normal five viscera' function,especially the sufficient kidney essence,although the 'to'and 'exhaustion'of Tiangui is directly affected and regulated by congenital kidney essence. Therefore the synergistic effect of the five viscera can not be ignored on Tiangui,although the congenital kidney essence occupies an important position.

Cross-Sectional Studies ; Fatigue ; epidemiology ; Female ; Humans ; Linear Models ; Male ; Medical Staff, Hospital ; statistics & numerical data ; Sampling Studies

Objective To investigate the significance of the expression of serum LDH and β2-MG in predicting survival of NHL patients and there correlations with clinical parameters. Methods The serum levels of LDH and β2-MG of 429 patients with NHL were measured by rate method and immunoturbidimetry.Besides,the clinical reference of the patients such as gender,age,B symptoms,clinical stages,extranodal sites and Karnofsky evaluation were summarized and grouped.All patients' survival status were achieved via phone and letter. All statistical analyses were performed using the SPSS program for Windows (version 16.0).Results The levels of LDH and β2-MG in age,B symptom,the advanced stage,extranodal sites≥2,Karnofsky evaluation were obviously higher than their counterpart and the difference was significant (P＜0.001). The median of LDH and β2-MG lever in age group was 229 U/L,190 U/L, 2.4 mg/L,1.7 mg/L. In B symptom was 260 U/L,192 U/L,2.3 mg/L, 1.7 mg/L. In clinical stage was 252 U/L, 175 U/L, 2.5 mg/L, 1.6 mg/L. In extranodal sites group was 278 U/L,195 U/L,2.4 mg/L,1.8 mg/L.In Karnofsky evaluation group was 250 mg/L,195 mg/L,2.2 mg/L,1.8 mg/L.LDH level of invasive lymphoma was significantly higher than that of indolent ones (median 211U/L,175 U/L,P=0.002),but there were no difference in the 32-MG level (P=0.937). There were no statistical significance about LDH and β2-MG levels in gender and cell type (P＞0.05).Overall survival rates were different between the abnormal LDH group and the normal LDH group (χ2=119.029, P＜0.001).Overall survival rates were different between the elevated β2-MG group and the normal β2-MG group (χ2 =104.733,P＜0.001).Overall survival rates of the abnormal LDH/β2-MG group was significantly lower than that of normal group (x2=192.326,P＜0.001).Multivariate analysis in Cox regression showed that LDH,β2-MG,age,clinical stages, extranodal sites, Karnmofsky evaluation and aggressive were independent prognostic factors.Conclusion The level of serum LDH and β2-MG can be taken as an auxiliary clinical index to evaluate the prognosis of the NHL patients.

Absorption distribution and excretion of 63Ni-NiCl2, administered orally to rats were studied by using liquid scintillation counting method. It was observed that the concentration-time curves in blood fitted the two compartment model of pharmacokinetics, Ka=6.18 h(-1), T(1/2)alpha =0.79 h, T(1/2)beta=40.68 h, CL =0.42 mL kg(-1) h(-1), Tmax =0.53 h, Cmax=24,987.75 min(-1) mL(-1), and Vd=0.016 L kg(-1). After rats were treated by 63Ni-NiCl2 for 15 days, in 22 tissues tested, the contents of 63Ni-NiCl2 in hair, hypothalamus, hypophysis, pancreas, small and large intestines were higher, and the residua of 63Ni-NiCl2 was not discovered in liver, kidney and heart. Radioactivity eliminated was 83.27% by urine and feces, 54.86% by urine, 28.41% by feces.
Administration, Oral ; Animals ; Area Under Curve ; Feces ; chemistry ; Female ; Hair ; metabolism ; Nickel ; pharmacokinetics ; urine ; Radioisotopes ; pharmacokinetics ; urine ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Tissue Distribution

Objective To compare the image quality and radiation dose of CTA of the kidney in patients using routine CT and the spectral imaging combination of different scanning protocols with the adaptive statistical iterative reconstruction 2.0 algorithm (ASIR 2.0). Methods A total of 90 patients who had undergone a CTA of the kidney were divided into three groups (A, B and C), with 30 patients in each group. Group A underwent a routine CT examination, and the scan parameters are:120 kVp, 30 to 650 mA, rotation time 0.5 s/r, scan FOV 50 cm × 50 cm;while groups B and C underwent spectral imaging protocol 1 and 2, the scan parameters of spectral imaging protocol 1 and 2 are:rapid dual kVp (80-140 kVp) switching in 0.25 ms, 375 mA and 360 mA, rotation time 0.7 s/r and 0.6 s/r, scan FOV 36 cm × 36 cm and 32 cm × 32 cm, respectively. All images were reconstructured using ASIR 2.0. The signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) of all images were calculated when the kidney CTA was completed. Each subjective image evaluation used a 5-point scoring method and was conducted by two independent radiologists. The CT dose index (CTDIvol) and dose-length product (DLP) were recorded, and the mean value was calculated. The DLP was converted to the effective dose (ED). All data were compared with Kruskal-Wallis test and one-way ANOVA. Results The energy level of 49 to 56 keV was found to provide the best CNR for displaying CTA of the kidney. There were significant differences in CT values, noise, SNR, CNR and subjective score between groups B, C and A (P<0.05), and there was no significant differences in CT values, noise, SNR, CNR and subjective score between groups B and C (P>0.05). There were significant differences in ED among groups A, B and C (P<0.05), and the ED of groups A, B and C were (8.2±1.2), (5.2± 0.9) and (4.4 ± 0.7) mSv, respectively. Conclusion Spectral imaging with different scanning protocols can more effectively reduce the radiation dose than the routine CT scan mode for a kidney CTA while still maintaining diagnostic image quality, and protocol 2 of spectral imaging in our study is recommended.

Objective To explore the relationship between glucose-6-phosphate dehydrogenase deficiency and type 2 diabetes and to provide reference for clinical diagnosis,monitoring and treatment of Type 2 diabetes.Methods Subjects were selected from our hospital,including 173 cases of healthy volunteers assigned to the control group;1 95 cases with type 2 diabetes conforming to the diagnostic criteria of WHO were assigned to the diabetic group.97 cases were diagnosed with glucose-6-phosphate dehydrogenase deficiency in our hospital,of whom 82 cases were assigned to simple glucose-6-phosphate dehydrogenase deficiency group,and 1 7 cases were assigned to the diabetes with glucose-6-phosphate dehydrogenase deficiency group.The correlation of glucose-6-phos-phate dehydrogenase activity and diabetes was measured by each detected value.Results Compared with the control group,the glu-cose-6-phosphate dehydrogenase activity and RBC count in diabetic group were higher(P <0.05).Positive correlations between glu-cose-6-phosphate dehydrogenase activity and RBC count in the two groups were significant(P <0.05).HbA1c and FBG showed a significant positive correlation in the control group,diabetic group and diabeties with glucose-6-phosphate dehydrogenase deficiency group(P <0.05).But there was no significant correlation in the glucose-6-phosphate dehydrogenase deficiency group.The rate of screening for glucose-6-phosphate dehydrogenase deficiency in diabetes group was 3.6%,and the rate in the control group was 1. 1%.When HbAlc≥6.5%,the rate of screening for glucose-6-phosphate dehydrogenase deficiency in the diabetes group was signifi-cantly higher than that in the control group (χ2 =4.239,P =0.039).Conclusion The level of HbA1c is discordant with that of blood glucose in diabetic patients with glucose-6-phosphate dehydrogenase deficiency group.Diabetes leads to the increasement of the rate of glucose-6-phosphate dehydrogenase deficiency.The glucose-6-phosphate dehydrogenase activity of diabetic patients with non-glucose-6-phosphate dehydrogenase dificiency is higher than that of the normal group.It may be associated with the level of RBC or increase of compensatory.Further more,glucose-6-phosphate dehydrogenase activity may be a good indicator for controlling diabetes,which remains to be further studied.

Objective To investigate the clinical, cerebrospinal fluid and imaging characteristics of 5 cases of diffuse meningeal melanomatosis.Methods The clinical manifestation, features of cerebrospinal fluid and image of 5 patients with meningeal melanomatosis diagnosed by biopsy or autopsy were retrospectively summarized.Results Clinical manifestations of these 5 cases included intracranial hyperpressure, meningeal irritation sign, intracranial nerves impairment, root pain of spinal nerve.In all of these 5 cases, retina hyperpigmentation above left discus opticus was found by funduseope in one case, and congenital melanocytic nevi were found in 4 patients, in which 2 cases were giant congenital melanocytic nevi.Increased lumbar puncture cerebrospinal fluid(CSF)pressure occurred in all cases.Subarachnoid hemorrhage was found in 3 cases.Analysis of CSF revealed increased protein in 4 cases and decreased glucose in 3 cases.Cranial MRI obtained after the intravenous administration of Gd-DTPA showed leptomeningeal enhancement.Malignant melanoma cells were found in CSF of 3 cases.Metastatic malignant melanoma cells were found by biopsy of axillary fossa lymph node in one case.Autopsy of one case revealed diffuse black pigmentation of the leptomeninges, especially in base of skull.Two cases were diagnosed as metastatic meningeal melanomatosis and 3 cases were possible primary meningeal melanomatosis. Conclusions Menings, root of cranial nerve and spinal nerve are impaired in meningeal melanomatosis, which is usually accompanied by congenital melanocytic nevi.Subarachnoid hemorrhage implies meningeal melanomatosis.Diagnosis can be identified when malignant melanoma cells are found in CSF.