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Role of contrast-enhanced ultrasound in follow-up assessment after ablation for hepatocellular carcinoma

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World Journal of Gastroenterology 2013年第6期19卷 855-865页

作者： Shu-Guang Zheng Hui-Xiong xu Ming-De Lu Xiao-Yan Xie zuo-Feng xu Guang-Jian Liu Lin-Na Liu Department of Medical Ultrasound Tenth People's Hospital of Tongji University Department of Medical Ultrasonics the First Affiliated HospitalSun Yat-Sen University

AIM:To assess the usefulness of contrast-enhanced ultrasound (CEUS) during follow-up after percutaneous ablation therapy for hepatocellular carcinoma (HCC).METHODS:A total of 141 patients with HCCs who received percutaneous ablation therapy were assessed by paired follow-up CEUS and contrast-enhanced computed tomography (CECT).The follow-up scheme was designed prospectively and the intervals between CEUS and CECT examinations were less than 14 *** im-ages of follow-up CEUS and CECT were reviewed by *** ablated lesions were evaluated and classified as local tumor progression (LTP) and *** was defined as regrowth of tumor inside or adjacent to the successfully treated *** detected new intrahepatic recurrences were also evaluated and defined as presence of intrahepatic new *** CEUS and CECT,LTP and new intrahepatic recurrence both were displayed as typical enhancement pattern of HCC (i.e.,hyper-enhancing during the arterial phase and washout in the late phase).With CECT as the reference standard,the ability of CEUS in detecting LTP or new intrahepatic recurrence during follow-up was ***:During a follow-up period of 1-31 mo (median,4 mo),169 paired CEUS and CECT examinations were carried out for the 141 *** a total of 221 ablated lesions,266 comparisons between CEUS and CECT findings were ***-three LTPs were detected on CEUS whereas 40 LTPs were detected on CECT,there was significant difference (P < 0.001).In comparison with CECT,the numbers of false positive and false negative LTPs detected on CEUS were 6 and 13,respectively;the sensitivity,specificity,positive predictive value (PPV),negative predictive value (NPV) and overall accuracy of CEUS in detecting LTPs were 67.5%,97.4%,81.8%,94.4% and 92.3%,***,131 new intrahepatic recurrent foci were detected on CEUS whereas 183 were detected on CECT,there was also significant difference (P < 0.05).In comparison with CECT,the numbers of

关键词： Contrast-enhanced ultrasound Contrastenhanced computed tomography Hepatocellular carcinoma Radiofrequency ablation Microwave ablation

Isomerization and Antiacidolysis Properties of Molybdic Heteropoly Blues with Keggin Structure

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Chemical Research in Chinese Universities 1995年第2期11卷 98-104页

作者： WANG zuo-ping,xu Lin,SHEN En-hong and WANG En-bo (Department of Chemistry,Northeast Normal University,Changchun,130024) NE NORMAL UNIV DEPT CHEMCHANGCHUN 130024PEOPLES R CHINA

For eight kinds of acidic potassium salts of hetcropoly blues which have not been reported in literature,the isomeri/.ation reaction in solution for these two-and four-electron hcteropoly blue solids were investigated by means of polarograms,cyclic voltammetry,31P NMR and X-ray diffraction *** heteropolynier of PMo12 and AsMo12 converte to their β-isomers during isomerization reaction which were found to have antiacidolysis property.

关键词： Heteropoly blue Keggin structure Isomenzation

Parameter estimation for SAR moving target in complex image domain

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Science China(Information Sciences) 2010年第4期53卷 854-866页

作者： zuo Yu, xu Jia*, PENG YingNing & XIA XiangGen Department of Electronic Engineering, Tsinghua University, Beijing 100084, China Department of Electronic Engineering Tsinghua University Beijing China

Based on the proposed parametric model of SAR ground moving target in the complex image domain, this paper derives the Cramer-Rao bounds (CRB) for the unknown model parameters estimation and obtains the inherent limitations for the moving target motion estimation in the SAR complex image domain. Firstly, the relationships are analyzed among the estimation performance and the target’s scattering intensity, Doppler parameters, motion parameters, as well as the power spectra of the target and the clutter. Furthermore, the parameter estimation performance is compared in the signal domain and the complex image domain (CID) to draw some useful conclusions. Besides, the reduction resolution processing is proposed to improve the parameter estimation, and its performance improvement is also presented with analytic expressions. For the homogeneous background, it is shown that the accurate parameter estimation and azimuth location may be realized for SAR ground moving target in the complex image domain. Finally, some numerical experiments are provided to demonstrate the effectiveness of the proposed methods.

关键词： synthetic aperture radar (SAR) moving target complex image domain parameter estimation Cramer-Rao bound (CRB) reduce resolution processing (RRP)

Clinical Features and Prognosis in 21 Patients with Extrinsic Allergic Alveolitis

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Chinese Medical Sciences Journal 2009年第4期24卷 202-207页

作者： Ping Wang zuo-jun xu Wen-bing xu Ju-hong Shi Xin-lun Tian Rui-e Feng Yuan-jue Zhu Department of Respiratory Medicine Department of Pathology Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 China

Objective To assess the spectrum of causes, clinical features, differences between disease phases, and prognosis of extrinsic allergic alveolitis （EAA）. Methods Patients with EAA diagnosed at Peking Union Medical College Hospital from August 1983 to May 2007 were analyzed retrospectively. Their medical records were examined to gather clinical, laboratorial, radiological, and histopathological data. Patients were divided to three phases （acute, subacute, and chronic） according to clinical presentations. Follow-up data regarding treatment response, subsequent radio- logical and pulmonary function studies, and clinical outcomes were collected. Results A total of 21 cases were enrolled. Among them, 11 were subacute, 10 were chronic. The most common exposure was pet birds （6 cases, 28.6%）. The primary abnormality of pulmonary function was restriction and/or reduction in diffusing capacity （12 cases, 63.2%）. The most common findings on high-resolution computed tomography （HRCT） were ground-glass opacities （13 cases, 68.4%） and centri- lobular nodules （8 cases, 42.1%）. Airway obstruction in pulmonary function test, emphysema, hmg cysts, and fibrosis on HRCT were more frequently seen in chronic than in subacute patients, though the differences were not statistically significant. Bronchoalveolar lavage fluid （BALF） showed lymphocytosis. The total＇cell count and the percentage of neutrophils were significantly higher in subacute than in chronic patients （P〈0.05）. Nonnecrotizing granulomas were seen in 8 （47.1%） cases. Improvement or normalization in symptoms, radiography, and pulmonary function test after treatment were seen in all 18 patients with avail- able follow-up data. Five patients recurred. Conclusions The characteristic abnormalities of pulmonary function, findings on HRCT, and pa- thology are essential for all phases of EAA, and the atypical manifestations such as obstruction and fibrosis can also be present frequently, particularly in chronic cases. Differentia

关键词： extrinsic allergic alveolitis bronchoalveolar lavage fluid radiography histopathology prognosis

Feasibility of Transabdominal Real-time CDFI and HDFI Techniques for Fetal Pulmonary Vein Display in the First Trimester

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Current Medical Science 2022年第3期42卷 635-641页

作者： Dong-mei LIN Yun-xiao ZHU Ying TAN Yu-jun HUANG Kun YUAN Wen-fen LIU zuo-feng xu Department of Medical Ultrasonics the Seventh Affiliated Hospital of Sun Yat-sen UniversityShenzhen 518107China Department of Medical Ultrasonics South China Hospital of Shenzhen UniversityShenzhen 518000China

Objective This study aimed to assess the feasibility and usefulness of transabdominal color Doppler flow imaging(CDFI)technology and the high-definition flow imaging(HDFI)technique in detecting fetal pulmonary veins(PVs)in the first trimester(11–13^(+6)weeks).Methods From December 2018 to October 2019,328 pregnant women with 328 normal singleton fetuses(crown-rump length:45–84 mm)who had undergone CDFI and HDFI scans for fetal heart and vessel examination were enrolled in this *** cases were divided into three groups according to the gestational age:group A,11^(+0)−11^(+6)weeks;group B,12^(+0)−12^(+6)weeks;and group C,13^(+0)−13^(+6)*** sonograms and CDFI and HDFI images were analyzed by two senior radiologists independently and *** abilities of CDFI and HDFI to display PVs were *** Successful PV display rates via CDFI and HDFI were 2.3%and 68.2%(P<0.01),22.4%and 82.4%(P<0.01),41.5%and 91.2%(P<0.01)for group A,group B,and group C,*** total successful display rates for the two methods were 28.9%(CDFI)and 84.8%(HDFI)(P<0.01).Conclusions The HDFI technique is more valuable than CDFI for detecting PVs in early pregnancy(11–13^(+6)weeks).HDFI can detect at least one PV in all cases and may be used to detect pulmonary venous anomalies early.

关键词： pulmonary vein first trimester prenatal sonography high-definition flow imaging color Doppler flow imaging

CONSTRUCTING COMPLETE POLE FIGURE FROM AN INCOMPLETE ONE

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Acta Metallurgica Sinica(English Letters) 1989年第12期2卷 441-443页

作者： zuo Liang xu Jiazhen LIANG Zhide Northeast University of Technology,shenyang,China

An analytical procedure for rapidly and quantitatively constructing complete pole figures of cubic materials,based on the fundamental equations of the vector *** been presented. *** incompletely measured pole figure c... 详细信息

关键词： pole figure vector method

The Role of Calcium in Mediating SlIAAs Expression in Tomato Pedicel Explants

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Agricultural Sciences in China 2010年第7期9卷 980-984页

作者： zuo Xian-hong xu Tao QI Ming-fang LU Shuang-shuang LI Jin-hong LI Hong GAO Song LI Tian-lai Key Laboratory of Protected Horticulture of Liaoning Province/College of Horticulture Shenyang Agricultural University Shenyang 110161 P.R. China

In order to illuminate the effect of calcium on the IAA signal transduction,we studied the expression of eight SlIAA genes which were up-regulated by calcium during the abscission after short-term（1 h） and long-term（16 h） treatments with calcium,IAA and calcium *** results indicated that calcium induced SlIAAs expression in 1 h at low concentration,EGTA affected little SlIAAs expression;it also increased IAA-induced transcript level of SlIAAs,TFP（named trifluoperazine） decreased most SlIAAs expression below the level of calcium combined with IAA-induced expression,except for ***-term treatment of calcium or calcium inhibitors suppressed some SlIAAs expression,whereas TFP enhanced all SlIAAs ***,SlIAA29 was induced by most treatments excluding 16 h EGTA.

关键词： tomato calcium IAA calcium inhibitors SIlAA gene

Renal cell carcinoma presents as pleural metastasis without pulmonary involvement

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Chinese Medical Journal 2012年第17期125卷 3193-3194页

作者： SUN xue-feng HUANG Hui xu zuo-jun LI Ji xu Kai Department of Pulmonary Medicine Peking Union Medical College Hospital Beijing 100730 China Department of Pathology Peking Union Medical College Hospital Beijing 100730 China

Although lung metastasis is common in renal cell carcinoma （RCC）, only a few cases of pleural metastasis without lung involvement have been reported. We present here not only a special case of pleural metastases from RCC without lung involvement, but also discussion about the specific metastatic pathway and the treatment of sole pleural metastasis.

关键词： renal cell carcinoma malignant pleural effusion vertebral venous plexus

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结节病临床诊断方法的评价

中华结核和呼吸杂志 2011年第7期34卷 484-485页

作者：徐作军中国医学科学院北京协和医院呼吸内科 100730

结节病是一种原因不明的、以非干酪样坏死性上皮细胞肉芽肿为病理特征的系统性疾病[1].虽然结节病的确诊依赖于病理学检查,但非干酪样坏死性上皮细胞肉芽肿并非结节病特有的病理特征,因此结节病的诊断需要根据临床表现、胸部X线征象、... 详细信息

结节病是一种原因不明的、以非干酪样坏死性上皮细胞肉芽肿为病理特征的系统性疾病[1].虽然结节病的确诊依赖于病理学检查,但非干酪样坏死性上皮细胞肉芽肿并非结节病特有的病理特征,因此结节病的诊断需要根据临床表现、胸部X线征象、血清生化检查、免疫学指标、BALF以及67Ga肺扫描等检查结果进行综合判断.现就结节病常用检查方法的临床价值和意义评价如下.

关键词：临床诊断方法结节病细胞肉芽肿胸部X线征象血清生化检查病理特征病理学检查系统性疾病