Objective To explore the clinical value of combined detection of lysophosphatidic acid(LPA),tumor-specific growth factor(TSGF)and carbohydrate antigen 1 9-9(CA1 9-9)in the diagnosis of non-small cell lung cancer(NSCLC).Methods The ser-um levels of LPA,TSGF and CA1 9-9 in 97 cases of patients with NSCLC(NSCLC group),43 cases of patients with benign lung disease(benign lung disease group)and 50 cases of healthy individuals(healthy control group)were detected,and diagnostic value of combined detection of these three tumor makers in the diagnosis of NSCLC was analysed.Results Serum levels of LPA,TSGF and CA1 9-9 in the NSCLC group were significantly higher than those in the benign lung disease group and healthy control group,had statistically significant differences(P <0.05).The sensitivity and specificity of combined detection of LPA,TSGF and CA1 9-9 was 68.63% and 37.1 7% respectively,and the sensitivity was higher than that of single detection and combined detection of any two of the three indicators.Conclusion Combined detection of tumor markers can improve the sensitivity in the diagnosis of NSCLC, which could provide reliable laboratory references for diagnosing NSCLC.

Objective To investigate the changes of plasma leve of brain natriuretic peptide(BNP) in patients with various heart diseases.Methods Plasma BNP levels in 106 patients with heart disease and 65 controls were determined with ELISA.Results Plasma BNP levels in the heart disease patients were significantly higher than those in the controls.Conclusion The dynamic changes of plasma BNP levels may participate in the course of development of heart disease.The plasma BNP detection has broad practical value in clinic.

Objective To evaluate the methods of measuring platelet-associated antibody PAIgG/ PAIgA/ PAIgM by flow cytometry(FCM) and enzyme linked immunosorbent assay(ELISA), and to investigate their diagnostic value for patients with idiopathic thrombocytopenic purpura(ITP).Methods With FCM and ELISA respectively, PAIg on the platelet membrane and in plasma were measured in 19 patients with ITP and 17 healthy volunteers, and were compared with each other in order to find out whether there were differences in these groups.Results FCM and ELISA measurement in patients with ITP were significantly higher than those in control group (P0.05). Compared with the results of ELISA, the positive percentage of PAIgG measured by FCM(84%) in ITP patients was slightly higher than that by ELISA(79%).Conclusion The platelet-associated antibodies of PAIgG/ PAIgA/ PAIgM, especially PAIgG,are important for diagnosing ITP. FCM, in combination with ELISA, may improve the reliability and the positive percentage of detection in ITP patients.

ObjectiveTo investigate the effects of ederavone on oxidative stress response during one-lung ventilation (OLV).MetihodsThirty ASAⅠ or Ⅱ patients of both sexes aged40-64 yr,weighing50-85 kg undergoing elective esophageal cancer resection were randomly divided into 2 groups ( n =15 each):control group (group C) and edaravone group (group E).In group E edavavone was infused immediately after tracheal intubation at 60.0 mg/h for 30 min.Then the infusion rate was reduced to7.5 mg/h and maintained until the end of operation.In group C equal volume of normal saline was infused instead of edaravone.Arterial and venous blood samplea were taken immediately before skin incision,at 30 min of OLV and 30 min after re-expansion of the collapsed lung for blood gas analysis and determination of serum MDA and 8-iso-PGF2a concentrations.PaO2/FiO2,PA-aDO2 and respiratory index (RI) (RI =PA-aDO2/PaO2 ) were calculated.ResultsPA-a DO2,RI and serum concentrations of MDA and 8-iso-PGF2a were significantly lower at 30 min after re-expansion of the collapsed lung in group E than in group C( P ＜ 0.05).ConclusionEdaravone can attenuate oxidative stress response during OLV.

Objective To use helical tomotherapy ( HT ) for determining the difference between actual doses and planning doses to the target volume and organs at risk ( OARs ) in patients with nasopharyngeal carcinoma receiving radiotherapy, and to provide guidance for the clinical treatment. Methods Localization and delineation of the target volume and OARs were performed by computed tomography ( CT) in 21 patients with nasopharyngeal carcinoma receiving radical radiotherapy using HT. All patients underwent megavoltage CT ( MVCT) scan prior to treatment. The obtained MVCT images were used for dose reconstruction in the adaptive module of HT, in which the actual dose was obtained and the non?image?guided dose was simulated. Each single dose distribution and the corresponding CT image were sent to software MIM6. 0 for superimposition, and the overall dose was obtained. The initial plan, image?guided plan, and non?image?guided plan were named Plan?1, 2, and 3, respectively. The dose distribution in the target volume and OARs was compared between the three plans with t ? test or wilcoxon test . Results Compared with those in Plan?1, the D98 values for the planning gross tumor volume ( PGTV) and planning target volume ( PTV) in Plan?2 were significantly reduced by 1. 16% and 2. 3%, respectively ( P=0. 025;P=0. 043);the volumes of the left and right parotids in Plan?2 were significantly reduced by 46. 0% and 46. 5% on average, respectively ( P=0. 000);the distances between the midline and the center?of?mass for left and right parotids were significantly reduced by 6. 9% and 6. 5%, respectively ( P=0. 000);the V26 and Dmean for both parotid glands were significantly elevated by 32. 8% and 25. 2%, respectively ( P=0. 000) . Compared with those in Plan?1, the D98 values for PGTV, PTV?1, and PTV?2 in Plan?3 were significantly reduced by 2. 0%, 1. 9%, and 2. 4%, respectively ( P=0. 001;P=0. 007;P=0. 036);the V26 and Dmean for both parotid glands in Plan?3 were significantly elevated by 33. 6% and 25. 3%, respectively ( P=0. 000);Dmax to the spinal cord was significantly increased by 6. 9%( P=0. 005) . There was no significant difference in D2 to the spinal cord between Plan?2 and Plan?1( P=0. 392) . Conclusions The doses to both parotid glands increase during HT for nasopharyngeal carcinoma, which is closely associated with the shift of the parotid glands toward the midline. Image?guided radiotherapy does not enhance the dose to the target volume, but reduces the dose to the spinal cord.

Objective To investigate the feasibility of dose verification of intensity modulated planning of helical tomotherapy (HT) using three-dimensional semiconductor array (Delta4) and find a more time-consuming and accurate method to validate the delivery dose.Methods Delta4 detector array was used to verify the HT plan dose distribution of 10 patients.The precise setup of detector array was guided and registered by MVCT imaging.After the implementation of delivery,the measured dose distributions on the corresponding planes were compared with those calculated by the treatment planning system (TPS).According to the different acceptance criteria combination of dose difference or distance to agreement at different threshold level including 3％/2 mm,3％/3 mm,3％/4 mm,3％/5 mm at TH5,TH10,TH20,TH30,TH70,TH90,the γ analysis method was utilized to evaluate the dose verification.Results The dose distribution measured by the Delta4 was well consistent with that calculated by the TPS.The mean γpassing rates were all above 94.89％.Conclusions Delta4 detector array can get satisfying results when used in HT plan dose verification and is a viable tool to replace traditional film dosimetry system in clinical quality assurance work.

Objective To investigate the value of mammography (MAM),ultrasound (US)and MRI in the diagnosis of breast tumors using a Meta-analysis.Methods A systematic search of relevant literatures was done from CNKI,CBM,VIP,EMBASE OvidSP,PubMed and The Cochrane Library databases.Some related literatures about MAM,US and MRI in the diagnosis of breast tumors and the quality was evaluated,and the available information was extracted.The Meta-analysis was then performed by a Meta-disc 1.4 software,and a Review Manager 5.3 software was used to calculate the summary receiver operating characteristic curves and the area under the curve.Results The diagnostic effect of the MAM+US+MRI was significantly higher than that of mammography or ultrasound (P <0.05).The MAM study heterogeneity among sources was affected by whether it based on BI-RADS diagnostic criteria,and US study heterogeneity was affected by average age of patients.However,the MRI heterogeneity between studies displayed by regression analysis was not affected by each covariate.The diagnostic sensitivity and specificity were 76% (95%CI:0.73-0.79)and 72% (95%CI:0.69-0.75)for MAM,85% (95%CI:0.82-0.87)and 70% (95%CI:0.67-0.73)for US,and 95% (95%CI:0.93-0.96)and 72% (95%CI:0.69-0.75)for MRI,respectively.And the area under curve (AUC)of summary receiver operating characteristic (SROC)curve was 82.0%,88.5% or 97.4%, respectively.Moreover,the AUC of combined three methods together was 98.3%.Conclusion The value of MAM,US and MRI in diagnosis of breast tumor is higher,and the highest one exists when the combined three methods together are used.

Purpose:To study the pharmacokinetic characteristics and systemic exposure of intraperitoneal chemotherapy drugs for ovarian cancer. Methods:Ten ovarian cancer patients received intraperitoneal chemotherapy with 5 FU 750mg/m 2 and DDP 60mgm 2 a week later after operating at Shanghai Cancer Hospital. The blood samples were extracted at 0.5, 1, 2, 6, 24 hour after infusion and then the concentration of drugs in the samples were analyzed by HPLC and the atomic absorption spectrum methods. Results:The curve of concentration via time of two drugs could be described well by a one compartment model with first order absorption. The pharmacokinetic parameters were: 5 FU: Ke = 0.45?0.18 /h, Ka = 7.59?4.63 /h, T(peak) = 0.87?0.30 h, C(max) = 2.46 ? 1.12 ?g/ml, AUC = 8.38?4.71 ?g?h/ml, Vd = 316?69.4 ml/kg; DDP: Ke = 0.014?0.01 /h, Ka = 1.31?1.03 /h, T(peak) = 4.72?2.81 h, C(max) = 0.85?0.28 ?g/ml, AUC = 85.6?55.7 ?g?h/ml, Vd = 60.3?32.6 ml/kg. The AUC 0～24h of 5 FU was 8.4 ?g?h/ml. The AUC 0～24h of DDP was 14.4 ?g?h/ml. Conclusions:The systemic exposure of 5 FU in intraperitoneal chemotherapy was not lower than in intravenous injection on the pharmcokinetics, and that of the DDP was lower.

Objective To analyse the CT features of hepatic abscess in different stages of pathology so that to improve the accuracy of CT diagnosis.Methods The plain CT and triphase contrast-enhanced CT findings of hepatic abscesses in 50 cases proved by surgery or other clinical methods were retrospectively analysed and compared with CT findings of hepatic carcinoma,hepatic metastases and hepatic hemangiomas.Results CT features of hepatic abscesses were divided into three types according to different stages of pathology.Early pyogenic hepatic abscess(10 cases)had two types:small cavitation(9 cases)and mass(1 case).Typical pyogenic hepatic abscess(38 cases)and granulomatous hepatic abscess(2 cases).Conclusion CT findings of liver abscesses are different in different stage of pathologic changes,triphase contrast-enhanced CT is specific in diagnosing hepatic abscess.

Objective To explore CT and MR manifestations and its diagnostic value of liver cystic lesions.Methods The clinical and imaging data of 78 cases with liver cystic lesions were collected,including 21 cases of inflammatory cystic lesions,30 cases of tumor cystic degeneration and 27 cass of congenital growth cysts.Results The detected rate of liver cystic lesions with CT and MRI was all 100%.For inflammatory cystic lesions,tumor cystic degeneration and growth cyst,CT diagnostic accurate rate was 76%,90% and 93%,respectively,and MR was 83%,93% and 100% respectively.CT and MR manifestations:Of all inflammatory cystic lesions,hepatic abscess and liver echinococcosis cyst appeared as cystic occupying lesion,the cysts were of tension,low-density band on CT or water-like signal intensity on MR around the lesions in hepatic abscesses.Liver echinococcosis cysts were of big cyst with small cyst sign and enhanced moderately in cystic wall post contrast-enhanced scan.The metastasis cystic tumors showed single or multiple cystic lesions and mild or moderate circular enhancement.The primary liver tumor's cystc degenerative lesions showed cyst-solid lesions on CT and MR,and were of enhanced manifestations of the primary tumors.Growth cysts were single or multiple low-density or water-like signal intensity,generally there was not enhanced.Conclusion CT and MR have great diagnostic value for the location and nature of cystic lesions.