Organics of the phthalocyanine category have very good nonlinear optical properties. The single-walled carbon nanotubes were modified by using the phenoxy phthalocyanine. Characterization analysis was made by means of the transmission electron microscope (TEM), ultraviolet visible absorptive spectra, fluorescent spectra and Raman spectra. Under the TEM, it was observed that the composite looked like sugarcoated haws. By comparing the ultraviolet visible absorptive spectra before and after absorption, it was disclosed that the spectral intensity and the intensity of the peaks in the fluorescent spectra dropped remarkably. This shows that the single-walled carbon nanotubes have absorbed a large number of phenoxy phthalocyanines. Raman analysis revealed that in the Raman spectra, the position of the main peaks of the single-walled carbon nanotubes after absorption moved in the direction of long waves. The analysis suggests that the movement of the Raman spectra results from the change in the state of the single-walled carbon nanotubes before and after absorption.

With the development of modern technology and clinical practice,the classic randomized controlled trial nowadays cannot meet the researchers' needs for evidence with more reliable external validity,especially in the field of TCM.Meanwhile,real-world study (RWS) has been attracting more attention and at the forefront of clinical research all over the world for providing evidence in conformity with the real world condition.In this paper,we firstly described the basic concept of RWS,and then found that it was characterized by large representative samples,loose inclusion or exclusion criteria,allocation of interventions according to patients conditions and willingness,long-term follow-up,and clinically relevant endpoints.By analyzing the existing examples of RWS,we noted and discussed the promising future of RWS in TCM clinical research.Finally,we hope this paper will provide some inspiration for TCM researchers.

Objective To analyze the clinical and ultrasonographic features of intraductal papillary mucinous neoplasm (IPMN) of the pancreas and to assess the usefulness of transabdominal ultrasonography. Methods Twelve patients with IPMN underwent surgery, including 4 (33.3%)with adenoma and 8(66.7%) with adenocarcinoma. IPMN was classified into 3 categaries by the site of main duct,branch duct and combined type based on the ultrasonographic findings preoperatively. All the clinical presentations and the ultrasonographic imaging findings were analyzed and compared with the histologic diagnosis. Results Of malignant IPMNs,diabetes was presented in 5 cases,elevated CA19-9 was presented in 4 cases and steatorrhea was presented in 2 cases. But these was not presented in benigns. Transabdominal ultrasonography revealed all the cystic or cystic-solid lesions in this study. The mean diameter of the lesions with adenoma was (1.4 ± 0.8)cm (range,0.5 - 2.0 cm) and that with adenocarcinoma was (6.3 ± 6.0)cm (range, 2.0 - 20 cm). The mean diameters of the main duct for the cases with adenomas and adenocarcinomas were (1.0 ± 0.8) cm and ( 1.6 ± 1.0) cm, respectively. Among the adenomas, 3 cases were calssified as branch type and 2 were demonstrated with mural nodules and no colour signals was detected within them. Five of the malignancies were considered as main duct type and 3 were combined type. Seven cases were detected mural nodules and showed abundant colour flow signals within them. Conclusions Transabdominal ultrasonography revealed the pancreatic cystic lesions and dilated ducts of IPMN. Some characteristics should be considered for malignancy: clinical symptoms, tumor size and mural nodules with colour flow signals,which may be helpful for the diagnosis and management of IPMN.

Objective To evaluate the ultrasonic characteristics of nasal bone absence at 16-34 weeks of pregnancy referring to fetal chromosomal anomalies. Methods The ultrasonic findings of the 20 fetuses with nasal bone absence at second or third trimester in Peking Union Medical College Hospital were reviewed referring to chromosomal karyotyping and labor induction or birth outcomes. Results The ultrasound features of the 20 fetuses including:(1) There were 17 fetuses showed bilateral nasal bones absence. The sonographic features were absence of hyper echo of nasal bone underneath the skin on either sagittal or transverse section. There were 5 fetuses showed multiple abnormalities:Four fetuses showed cardiac abnormalities (three showed atrioventricular septal defect, one showed ventricular septal defect, one showed ventricular septal defect with abnormal great vessels). One fetus showed duodenal obstruction′double bulbs′. The other minor abnormalities including short femur and humerus, increasing echogenetic bowels, aberrant right subclavian artery, mild unilateral ventriculomegaly, mild renal pelvic ectasia, outreached tongue, abnormal gestures of hands. (2) There were 3 fetuses showed unilateral nasal bone absence. The sonographic features were absence of hyper echo of either nasal bone on transverse section but with hyper echo on sagittal section. Two fetuses showed cardiac abnormalities (one fetus showed atrioventricular septal defect, one showed ventricular septal defect). The other minor abnormalities including short femur and humerus, hyper echogenetic bowels, increasing thickness of nuchal translucency or nuchal fold. Twelve fetuses were induced labor but only one had biopsy showed accordant result with ultrasound. (3) Karyotyping results:there were 9 of trisomy 21, 1 of 4p-and 7 of normal karyotype fetuses showed bilateral nasal bone absence. There were 2 of trisomy 21 and 1 of normal karyotype fetuses showed unilateral nasal bone absence. (4) Birth outcomes and follow-up:twelve fetuses induced labor but only one fetus had biopsy. Eight fetuses were born until term and 5 fetuses showed normal in follow-up. The results of twelve fetuses showed concordant with ultrasonic ifndings. Conclusions Characteristics of the nasal bone absence are absence of bilateral or unilateral nasal bones. If we ifnd nasal bone absence in prenatally ultrasound screening, the karyotyping should be recommended in order to detect chromosomal abnormalities especially trisomy 21.

Objective The aim of the study was to determine the placenta volume (PV) at 11-13+6 weeks of gestation by three-dimensional ultrasound (3DUS) in combination with birth weight, placenta weight, placenta volume at birth and maternal age, body mass index (BMI) additionally. Methods From June 2011 to July 2012, placental volumes were prospectively measured by VOCAL (Virtual Organ Computer-aided Analysis) method in 129 normal pregnancies of Peking Union Medical College Hospital at 11-13+6 weeks of Gestation, multiples of the median was calculated (MOM) after logarithmic10 transformation referring to different crown-rump length (CRL) groups. The normal pregnancies were selected without any combinations or fetal abnormalities, then recorded the birth weights, placenta diameters and thicknesses and placenta weight at delivery. The maternal basic status was also concluded in the study. Results Correlation analysis results: (1) The transformed placenta volume MOM showed a significant correlation (Spearman rho=0.200, P<0.05) with birthweight but not with placenta weight or placenta volume calculated as ellipsoid (Spearman rho=0.164, 0.112 respectively, P>0.05). (2) The birthweight showed significant correlations with placenta weight, placecnta volume and maternal BMI (Spearman rho=0.478, 0.361, 0.259 respectively, P<0.01). (3) The placenta weight at birth showed a significant correlation with placenta volume at birth (Spearman rho=0.467, P<0.01) and maternal BMI (Spearman rho=0.198, P<0.05). Regression analysis results: (1) Birth weight (g)=1136.9+1530.9×MOM+45.3×BMI-15.0×maternal age (r=0.29, P=0.01<0.05). (2) Placenta weight (g)=88.1+315.3×MOM+10.0×BMI+0.1×maternal age (r=0.27, P=0.02 <0.05). Conclusions The placental volume at 11-13+6 weeks of gestation has significant correlation with birthweight. This might assist in the identification of the high risk pregnancies caring large or low for gestational age fetuses.

Objective To investigate the effect of continuous high volume hemofiltration (HVHF)on respiratory mechanics and hemodynamics in multiple organ dysfunction syndrome (MODS). MethodsForty-one adult patients with MODS who received mechanical ventilation were divided into HVHF group(21 cases) and continuous vein-vein hemofiltration (CVVH) group (20 cases) by envelople. The peak airway pressure (Ppeak), dynamic pulmonary compliance(Cdyn), cardiac output(CO ), systemic vascular resistance(SVR), pulmonary vascular resistance (PVR) and blood gas analysis before treatment and 24 hours after treatment were measured. Results Twenty-four hours after treatment, the levels of Ppeak, Cdyn, CO, PVR,SVR and oxygenation index were (31.32 ±2.23) cm H2O (1 cm H2O =0.098 kPa), (26.18 ±3.54)(220.41 ±21.41) mm Hg (1 mm Hg =0.133 kPa) respectively in HVHF group,significantly higher than those before treatment [(42.00 ±3.34) cm H2O, (17.91 ±4.31) ml/cm H2O, (8.68 ±1.17) L/min,(267.27 ± 16.29) dyn·s·cm-5, (805.32 ± 18.82)dyn ·s·cm-5, ( 119.41 ± 17.10) mm Hg] (P ＜ 0.01 ),as well as higher than those in CVVH group after 24 hours' treatment (P ＜ 0.01 ). ConclusionHVHF shows significant beneficial effects on respiratory mechanics and hemodynamics of MODS.

Objective To evaluate the diagnostic value of sonographic score in the diagnosis of salivary gland involvement in patients with Sj(o)gren's syndrome(SS). Methods One hundred and three cases (44 cases of SS group and 59 cases of control group) were involved in the study. Parotid and submandibular glands of all the cases were examined by a doctor unawaring of the clinical information. All the off-line images were scored by two doctors seperately. The best threshold and the according diagnostic efficiency were determined by statistical analysis. Results The Kappa coefficient between the two doctors was 0.80.The parotid score,submandibular score and total score of SS group were significantly higher than those of the control group (5.79 ± 2.40 vs 0.46 ± 0.97,5.93 ± 1.58 vs 1.32 ± 1.84,11.64 ± 3.27 vs 1.78 ± 2.33,respectively). According to the ROC curve for the parotid score, submandibular score and total score, the area under the curve were 0.98,0.95,0.99, respectively. The best diagnostic threshold for total score was 8 and under this threshold, the diagnostic sensitivity, specificity, positive and negative predictive values were 93%, 97%, 95%, 95%, respectively. Conclusions The sonographic score including both parotid and submandibular glands is a reliable method with high reproductivity and diagnostic accuracy in the diagnosis of SS salivary gland involvement.

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Objective To evaluate the effect of pharmacological postconditioning on longitudinal myocardial function in rabbits' model of myocardial inshemia-reperfusion using layer-specific strain of ultrasound speckle tracking imaging.Methods Forty healthy rabbits were randomly divided into two groups:ischemia-reperfusion group (IR) and pharmacological postconditioning group (ATP-PPost). Echocardiography examinations were performed at baseline,45 min after ligation and 30 min,60 min,120 min after reperfusion.Pathological examinations were applied in two rabbits randomly selected from each group at 45 min after ligation and 30 min,60 min after reperfusion and at the end of experiment.Results①After coronary artery ligation,left ventricular ejection fraction (LVEF) decreased in two groups(P <0.05) and longitudinal systolic strain(SLsys) of 3 myocardial layers decreased in two groups (P <0.01). And the SLsys in the endocardium had greater variation than that in the epicardium.②Compared with that after ligation,the SLsys of all myocardial layers increased at 30 min after reperfusion in ATP-PPost group (P <0.01),and the SLsys in endocardial layer kept increasing with the time of reperfusion(P <0.05). And the SLsys of 3 myocardial layers were significantly higher in ATP-PPost group than those in IR group (P <0.01).③ In two groups,the values of SLsys were decreasing from endocardial layer to epicardial layer.They were higher in the endocardium than those in the epicardium at any time(P <0.01 and P <0.05).Conclusions Layer-specific strain of STI can evaluate exactly the regional myocardial function of rabbit myocardial pharmacological-postconditioning model.SLsys of endocardial layer is more sensitive to myocardial ischemia than that of epicardial layer.

ObjectiveTo evaluate the diagnostic capability of prenatal ultrasound in diagnosis of fetal akinesia deformation sequence (FADS).MethodsThe prenatal sonographic characteristics of 5 fetuses with FADS were analyzed retrospectively.ResultsBoth multiple joint contractures and central nervous system (CNS) anomalies,which include 5 small head circumferences,2 short cerebellar diameters,and 1 flat forehead,were found by prenatal ultrasound in all 5 FADS fetuses.Additional fetal abnormalities such as micrognathia,polyhydramnios,short umbilical cord and intrauterine growth retardation were also observed.The results of fetal chromosome analysis were available in 2 cases indicating normal karyotype.Conclusions Prenatal identification and diagnosis of FADS is possible based on the findings of sonographic examination.