In order to select a computed tomography(CT)scanner system with reasonable cost performance (performance-price ratio) among various brands and types of CT products in accordance with the clinical features of the pediatric patients, Tianjin Children's Hospital made a feasibility study on purchasing the equipment in all its aspects, including the evaluation of its type and performance, social and economic benefits, and eventually purchased a 16-slice helical CT scanner which fully fulfills the practical needs of the hospital. This way of evaluation can be widely used in the feasibility study for purchasing different large-scale medical equipment to avoid unnecessary waste of funds.

In recent years,the efficacy of cervical cancer treatment has been increasing gradually.It has got a basic consensus of the standard treatment mode for most cervical cancer,but further effort should be done to improve the treatment response of locally advanced cervical cancer and recurrent or metastatic cervical cancer.The efect of redical surgery and radiotherpy is the same to early cervical cancer.Concurrent chemoradiotherapy is the standard treatment for patients with locally advanced cervical cancer.Chemotherapy combined with antiangiogenic targeted therapy can improve the survival of patients with recurrent or metastatic cervical cancer,while whether needing new adjuvant therapy or not,it asks for further investigation.

Objective To assess atrophy of the multifidus in elderly patients with low back pain using magnetic resonance imaging.Methods Thirty patients with low back pain were recruited,and 15 healthy subjects formed a normal group.The cross sectional area (CSA) and signal strength of the multifidus muscles at the L4-5 and L5-S1 levels were measured along with the signal strength of the hip fat for all of the subjects in both groups using a superconducting magnetic scanner.Results There was no statistically significant CSA difference between the groups at either level.The contrast between multifidus muscle and adipose tissue was significantly different between the groups at both levels.Conclusion In evaluating atrophy of the multifidus muscle in elderly patients with low back pain,the contrast between multifidus muscle and adipose tissue at either level L4-5 or L5-S1 can be used for assessment.It is more reliable,specific and sensitive than the CSA of the muscle.

Adult ; Blood Viscosity ; Coronary Disease ; blood ; Diabetes Mellitus ; blood ; Diagnosis, Differential ; Female ; Humans ; Male ; Medicine, Chinese Traditional

Objective To design and establish a set of diffusion optical tomography(DOT) system.Methods Near-infrared(NIR) laser was employed as the light source and only one photomultiplier tube(PMT) as the detector.An optical multiplexer was used to alter the detector channels.The 32 channels of the system,which are consisted of 16 launch channels and 16 detector channels,worked under the continuous-wave(CW) model and were used to acquire 256 boundary data.Results Experiments were performed based on the proposed imaging system.The intralipid was used as the tissue-like medium and the India ink as the absorber.Two sets of data on the boundary were sampled,respectively,before and after the absorber was embedded inside the tissue-like medium.The two sets of data were normalized and then used to reconstruct the absorption coefficient distribution.The recovered image reflected the real location and size of the absorber.Conclusion The proposed imaging platform can image the tissue optical parameters effectively.However the resolution of the reconstructed image was not high because the inverse problem was gravely underdetermined and the noise was not considered in the reconstruction algorithm.The recovered result in the next generation system could be improved by making more use of prior information and enhancing the performance of the system.

Object To study the suitable conditions on tissue culture of stem apex and shoot rapid propagation of ginger. Methods The ginger stem apex ((?)

ObjectiveTo investigate the change of the platelet function in children with primary immune thrombocy-topenia (ITP) before and after treatment.MethodsThe platelet indices, immature platelet fraction (IPF%), immature platelet counts (IPC), granule membrane glycoproteins of platelet (CD62p, PAC-1, CD42b) were tested by automatic blood cell analyzer and lfow cytometry (FCM) in 18 children with ITP before treatment and after complete response and in 17 children undergoing elective surgery (control gourp).ResultsCompared with control group, MPV, PDW, P-LCR and IPF% were signiifcantly higher and PLT, PCT, IPC were signiifcantly lower in children with ITP. The expressions of three platelet membrane glycoproteins (PAC-1, CD62p, CD42b) were signiifcantly lower in children with ITP. After treatment, children with ITP achieved completely response. Compared with before treatment, MPV, PDW, P-LCR and IPF% were signiifcantly lower, and PLT, PCT, IPC, and the expressions of three platelet membrane glycoproteins (PAC-1, CD62p and CD42b) were significantly higher. ConclusionsThe platelet function is depressed and in status of low activity in children with ITP. The relative platelet indices provide new references for the diagnosis and the judgment of therapeutic effect in ITP patients.

BACKGROUND: There is a close correlation between telomere length and cell senescence, immortalization or canceration. OBJECTIVE: To explore the significance of telomere length diversifies in the chronic compartment syndrome in lumbosacral region. DESIGN, TIME AND SETTING: A comparative observation was performed at the State-Level Key Medical Genomics Laboratory, Shanghai Jiao Tong University School of Medicine from July 2007 to February 2008. PARTICIPANTS: The vertical spinal muscular tissue samples were taken from people aged 29-49 years old [mean aged (34.7?12.6) years] including 10 normal people and 15 patients with chronic compartment syndrome. According to the age, the normal were divided into the aged 30-37, and aged 38-45 groups. The abnormal were divided into aged 29-34, aged 35-43 and aged 44-49 groups, with 5 samples in each group. METHODS: DNA was extracted from samples of each group. Telomere length in vertical organizations spinal muscular skeletal muscle was measured by Southen Blotting hybrid technology. MAIN OUTCOME MEASURES: Telomerase length of erector spinal muscles in patients and normal people. RESULTS: The mean telomere length in patients with chronic compartment syndrome was obvious shorter than that of the normal people, which has significant difference (P

AIM: To establish chromatography fingerprint of Radix Ophiopogonis. METHODS: HPLC was applied on a Kromasil C_(18) column(5 ?m,4.6 mm?250 mm) with CH_3CN-0.01%H_3PO_4 solution by gradient elution,flow-rate of 1.0 mL/min,and the UV absorbance was monitored at 297 nm. RESULTS: 30 common peaks were picked up. CONCLUSION: This method is reliable,simple and provides a reference standard for the quality control of Radix Ophiopogonis.

The principles, traits, and proceedings of the data-driven methods including principal component analysis, independent component analysis and canonical analysis are summarized. And the aspects of the methods adapted to functional magnetic resonance images(fMRI) data are emphasized.