Objective To evaluate the usefulness of speckle tracking imaging(STI) for assessment of left ventricular(LV) and right ventricular (RV) functions in patients with isolated disease of right coronary artery.Methods 45 cases were diagnosed as single right coronary lesions given echocardiography,30 cases had chest pain but coronary angiography had not seen the obvious narrow as a comparison.The twodimensional loop-cinec were obtained in apical 4-chamber view,apical 2-chamber view and long axis of LV view.Eighteen segments of LV longitudinal peak systolic strain,global peak systolic strain of each view and three segments of RV free wall were measured by two-dimensional strain software.Results In the patients who had right coronary lesions but did not happen myocardial infarction,the strain(S) values in the base,mid and apex segmental of LV post wall,the base and mid segmental of LV inferior wall and the base and mid segmental of LV septum were significantly lower( P ＜0.05).The S values in the mid segment of RV free wall was lower( P ＜0.05).In the patients who had right coronary lesions and myocardial infarction,the S values in the base,mid segmental of LV antsept,the apex segmental of LV anterior wall,the base,mid and apex segmental of LV post wall,the base and mid segmental of LV inferior wall and the base and mid segmental of LV septum were significantly lower( P ＜0.05).The S values in the mid and apex segments of RV free wall were lower ( P ＜0.05).And the LV global longitudinal strains were lower in the two groups (P ＜0.05).Conclusions STI is a new and useful technology for assessment ventricular functions in patients with isolated disease of right coronary artery,and there are multiple segments impaired.

Objective To create a three-dimensional speckle tracking imaging (3DSTI) multiparameter analysis model to improve the diagnostic efficiency of obstructive coronary artery stenosis.Methods One hundred and four patients with chest pain were divided into two groups:coronary heart disease(CHD) group (61 patients) and control group (43 patients) according to the result of selective coronary angiography (SCA).The two groups' clinical data and echocardiographic parameters were aquired,including mitral flow E and A velocities,E peak deceleration time,isovolumic relaxation time (IVRT),mitral annulus velocity e' and a' peak in diastolic and s' peak in systolic by tissue Doppler imaging (TDI),and left ventricular ejection fraction (LVEF).The global longitudinal peak strain (2D-GLPS) by two dimensional speckle tracking,global longitudinal peak strain (3D-GLPS),circumferential peak strain(3D-GCPS),radial peak strain (3D-GRPS) and area peak strain (3D-GAPS) were acquired.Results For conventional parameters,there were no significant difference between the two groups.Compared with control group,TDI e' peak,3D-GRPS decreased,significantly E/e',2D-GLPS,3D-GLPS,3D-GAPS,3D-GCPS increased significantly (P ＜0.01).For single parameter,area under the ROC curve (AUC) were successively 3D-GAPS(0.766) ＞ 3D-GLPS(0.746) ＞ 2D-GLPS(0.746) ＞3D-GRPS(0.727) ＞ s' (0.703) ＞E/e' (0.688)＞3D-GCPS(0.686).AUC for single and multi technology were successively p-Union(0.856)＞p-3DSTI(0.772) ＞ p-TDI (0.757) ＞ p-2DSTI (0.746).Conclusions 3DSTI together with multi-parameter analysis model can significantly improve the diagnostic efficiency of obstructive coronary artery stenosis.Area strain is an independent predictor of obstructive coronary artery stenosis.

Objective To assess the clinical value of three-dimensional speckle tracking imaging (3D-STI) in detecting left ventricular systolic function in patients with paroxysmal atrial fibrillation (PAF).Methods 34 patients with PAF and 34 matched subjects were included.The strains of the left ventricular 17 segments (longitudinal and radial strain) were acquired using 3D-STI.Results Compared with the controls,the strains were decreased in the posterior wall,the inferior wall and the posterior septum below the left ventricular papillary muscle level in the PAF group,the differences were statistically significant (P ＜ 0.05),while there were no significant differences in other segments (P ＞ 0.05).Conclusions Left ventricular systolic function in patients with PAF was decreased,but the decreased degree of the segments was not all the same.3D-STI can evaluate left ventricular systolic function in patients with PAF and provide valuable clinical information.

Objective:To meet the individualized needs of residents in standardized residency training of cardiac intervention specialty for cardiac ultrasound teaching, to construct a bionic 3D printing model of ultrasound source, and to discuss its application value in ultrasound teaching and simulation exercises.Methods:Sixty residents majored in cardiovascular medicine receiving standardized residency training of ultrasound in ultrasound imaging department of Renmin Hospital of Wuhan University were randomized into experimental group and control group in average. The experimental group adopted ultrasound bionic 3D printing heart model combined with problem-based learning (PBL) teaching method, and the control group adopted traditional multimedia PPT combined with PBL teaching method. At the end of teaching activities, theoretical examination, operation assessment and questionnaire survey were conducted to evaluate and compare the teaching effect between the two groups. SPSS 21.0 software was performed for t test. Results:The theoretical examination scores of the experimental group and the control group were (81.4±8.2) points and (74.8±9.4) points, respectively, P=0.002, and the operation assessment scores were (89.1±5.6) points and (71.5±8.8) points, respectively, P<0.001. The questionnaire survey showed that the experimental group had better feedbacks than the control group in the aspects of mastery of heart anatomy knowledge, learning experience, learning interest, learning efficiency, understanding of interventional heart disease, clinical skills of interventional operation and overall satisfaction (all P<0.05). Conclusions:Ultrasound bionic 3D printing combined with PBL teaching method can help strengthen the mastery of cardiac anatomy knowledge, promote the learning experience of cardiac ultrasound and improve the skills of interventional operation. The teaching effect is significant and the students' satisfaction is high.

Objective To assess regional left ventricular systolic function in patients with hypertrophic cardiomyopathy (HCM) using real-time three-dimensional echocardiography (RT-3DE).Methods Twenty-five patients with HCM which was asymmetric septal hypertrophy,and twenty healthy subjects were enrolled in the study.The apical four-chamber view of left ventricular was acquired by RT-3DE.The left ventricular volume-time curves were analyzed quantitatively with Tomtec 4D LV-Analysis 3.0,and regional end-diastolic volume and end-systolic volume of left ventricular (rEDV,rESV),the time to minimum systolic volume (rESVT),regional stroke volume (rSV),regional ejection fraction (rEF),regional-global ejection fraction (rgEF) and the parameters of left ventricular dyssynchrony were measured.Results In the HCM group,the values of Tmsv16-Dif,Tmsv16-SD,Tmsv16-Dif％,Tmsv16-SD％ were significantly lower compared with the control group (P ＜ 0.01),and rEDV,rSV,rEF and rgEF in hypertrophic segments were lower than those in non-thickening and mild-thickening segments (P ＜0.05).In the control group,there were no significant difference of those parameters among all segments (P ＞0.05).The values of rEDV,rSV and rgEF in hypertrophic segments decreased in the HCM group (P ＜0.05),at the basal level,rEF in hypertrophic segments decreased,at the apical level,it increased,but the differences at the mid-ventricular level between the two groups were not significant;the values of rEF and rgEF in non-thickening and mild-thickening segments increased (P ＜0.05).Conclusions RT-3DE could sensitively detect left ventricular dyssynchrony and accurately assess regional left ventricular volume and function of different segments in patients with HCM.

To compare the difference of total phenol of magnolia solid dispersion prepared by different methods. Hot melt extrusion, solvent evaporation method, and fusion-cooling method were used to prepare total phenol of Magnolia accessory solid dispersion, Plastone S-630 and HPC. The drug dispersion state in the prepared solid dispersion was evaluated with DSC and X-ray diffraction; FT-IR method was used to analyze the possible connections between drug and accessories. Finally, accelerated stability-in vivo dissolution test was use to compare the stability differences between these three processes. The results of DSC and X-ray diffraction showed that all of the drug in solid dispersion processed by three processes can exist in amorphous form; FT-IR results also could not distinguish the difference between the three processes; accelerated stability-in vivo dissolution test showed the stability of solid dispersion prepared by HPC was better than Plastone S-630, and the same kinds of materials solid dispersion prepared by hot melt extrusion showed a better stability than the other two processes.
Chemistry, Pharmaceutical ; methods ; Drugs, Chinese Herbal ; chemistry ; Magnolia ; chemistry ; Phenol ; chemistry ; Spectroscopy, Fourier Transform Infrared ; X-Ray Diffraction

Objective To use the fusion image of the end-inhalation holding (EIH) phase and endexhalation holding (EEH) phase to define the target volume of individual patient with liver cancer,and to evaluate the target geometry,feasibility,and clinical significance of the technology.Methods Eighteen patients with liver caucer who were treated in our hospital from 2012 to 2013 were enrolled as subjects.With the same posture and scan range,all patients underwent contrast-enhanced three-dimensional computed tomography (3DCT) scans in the phases of free breathing (FB),EIH,and EEH.Gross tumor volume (GTV),clinical target volume (CTV),and organ of risk (OAR) were delineated on the above images.CTVFB was defined as GTV on the FB phase image (GTVFB) plus a margin of 10 mm,while planning target volume (PTVFB) was defined as CTVFB plus a margin of 10 mm in the right-left and anterior-posterior directions and a margin of 20 mm in the superior-inferior direction.GTVEI and GTVEE were defined as GTV on the EIH and EEH images,respectively.Based on the EEH images,the registered EEH and EIH images were fused to form GTVEI+EI.CTVEI+EE was defined as GTVEI+EI plus a margin of 10 mm,while PTVEI+EE was defined as CTVEI+EE plus a margin of 5 mm in the right-left and anterior-posterior directions and a margin of 10 mm in the superior-inferior direction.The Pinnacle3 v8.0m treatment planning system was used to design two 3D conformal radiotherapy plans for each patient.The volume,degree of inclusion (DI),matching index (MI),and central displacement of CTVFB and CTVEI+EE,as well as PTVFB and PTVEI+EE,were compared between the two plans.Results In the 18 patients,the mean CTVFB was significantly smaller than the mean CTVEI+EE(149.00±87.54 cm3 vs.188.17± 125.72 cm3,P=0.014);there was no significant difference between the mean PTVFB and PTVEI+EE (276.68± 146.41 cm3 vs.253.66± 117.35 cm3,P=0.080).DI of CTVFB to CTVEI+EF,PTVFB to PTVEI+EE,CTVEI+EE to CTVFB,and PTVEI+EE to PTVFB were (99.83±0.09)％,(84.55±8.45) ％,(80.83± 12.31) ％,and (99.78±0.08) ％,respectively.MI of CTVEI+EE to CTVFB and PTVEI+EE to PTVFB were 0.83± 0.07 and 0.87± 0.03,respectively.The central displacements of CTVEI+EE from CTVFB in x,y,and z axes were 0.55± 1.07 cm,0.76±3.02 cm,and-0.26± 1.98 cm,respectively (P =0.432,0.971,0.587).Conclusions In the treatment of liver cancer,the target volume delineation and image fusion using 3DCT images in EIH and EEH phases may avoid target omission due to respiratory movement,making it possible to increase radiation dose to target volume and improve the efficacy of radiotherapy.

Objective To investigate the consistency of the anatomical parameters of left atrial appendage (LAA) based on three-dimensional transesophageal echocardiography (3D-TEE) and CT of 3D print datasource by the post-processing of DICOM data.Methods Sixty-three patients with atrial fibrillation in our hospital who underwent 3D-TEE and cardiac CT examination were selected and the original DICOM data of the LAA were obtained.The volume images of LAA were acquired by the postprocessing of Mimics software.After measuring and evaluating the anatomical parameters,the differences of parameters between TEE and CT were compared and the consistency of the two methods was evaluated.Results The data of 63 patients with atrial fibrillation obtained by 3D-TEE and CT were successfully post-treated and the detailed anatomical parameters of LAA were obtained.Morphological parameters:the Kappa values of the anatomical shape and opening shape of the LAA based on the 3D-TEE and CT data were 91.0%,69.3%,respectively.Measurement parameters:the area,perimeter,long axis,short axis of ostiums of LAA,and depth of LAA by CT were larger than those by 3D-TEE(all P<0.05).The post-processing results showed that 57 patients (90.5%) had significant bending of LAA′s main lobe in the 3D-TEE group and CT group,the difference in the measurements of the angle of the first bend and the distance from the first bend of the LAA to the orifice of the 57 cases between by 3D-TEE and CT were no statistical significance (P>0.05).LAA′measurements of 3D-TEE was concordant well with CT′s by Bland-Altman analysis.Conclusions In agreement with CT,3D-TEE can also be used as a datasource for 3D printing by evaluating spatial morphology of the LAA.

Objective To research the curative effect of chondroitin sulfate and glucosamine on Kashin-Beck disease(KBD). Methods According to Diagnosis for Kashin-Beck disease,80 patients of adult KBD were detected from Guanghui village Shangzhi city Heilongjiang province in July,2007,and they divided into treatment group and control group according to their condition,age and sex,40 person in each group. Treatment group was given chondroitin sulfate and glucosamine sulfate,and control group was given placebo(equivalent amount of starch). Bilateral knees X-ray films were shot before and after treatment (8th month),scale division magnifying glass was used to measure the width of joint space on X-ray films. Results The width of joint space respectively was (4.30±2.14) and (4.10±2.07)mm in control group before and after treatment,and treatment group respectively was (4.17±2.15),(4.16±2.11)mm. Medicine had no obviously role on joint space (F = 0.50,P > 0.05),Time and both of time and medicine had obvious role on joint space(F= 67.66,46.74,all P< 0.05). Joint space of treat group was thinner than control group(P < 0.05) before treatment,but thicker after treatment(P < 0.05). To compare with the width of before treatment,joint space width of control group became obviously narrow(P < 0.05). Conclusions Experimental group taking chondroitin sulfate and glucosamine sulfate alleviated knee joint space narrowing process of adults KBD patients compared with control group. It plays a protection role in articular cartilage and provides evidences for choosing drug and evaluating effect in the treatment of adults KBD.

OBJECTIVEQuantitative determination was made of ethyl-p-hydroxybenzoate in Dracaena cochinchinensis extracted with two technologies.

METHODThe sample was resolved with methanol and isolated by TLC, purged with methanol. Tge sample solution was chroma to graphed on a C18 column with acetonitrile-1% acetic acid (31:69) as mobile phase, detecting at 257 nm and content was calculated with external standard method.

RESULTThe standard curves of ethyl-p-hydroxybenzoate were linear in the range of 0.206-4.12 ng, r = 0.9998. The average recovery was 97.2% and RSD was 1.4%.

CONCLUSIONThe content of ethyl-p-hydroxybenzoate in D. cochinchinensis extracted with heating-tree technongy is higher than that with traditional technology.