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interventional digital subtraction angiography for small bowel gastrointestinal stromal tumors with bleeding

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World Journal of Gastroenterology 2014年第47期20卷 17955-17961页

作者： Yao-Ting Chen Hong-Liang Sun Jiang-Hong Luo Jia-Yan Ni Dong Chen Xiong-Ying Jiang Jing-Xing Zhou Lin-Feng Xu Department of interventional Radiology Sun Yat-sen Memorial HospitalSun Yat-sen University

AIM: To retrospectively evaluate the diagnostic efficacy of interventional digital subtraction angiography (DSA) for bleeding small bowel gastrointestinal stromal tumors (GISTs).

关键词： Gastrointestinal stromal tumors Small bowel Digital subtraction angiography interventional Embolization Bleeding

Evaluation of CdZnTe spectrometer performance in measuring energy spectra during interventional radiology procedure

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Nuclear Science and Techniques 2019年第9期30卷 55-60页

作者： Lin Chai Lian Chen Cui-Ping Yang Dong-Dong Zhou Meng-Meng Yang Wei-Wei Qu Gao-Long Zhang Da-Qian Hei Shou-Ping Xu Xin-Jian Chen State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and Protection Soochow University Suzhou 215123 China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Hefei 230026 China Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions Suzhou 215123 China School of Physics and Nuclear Energy Engineering Beihang University Beijing 100191 China Beijing Advanced Innovation Center for Big Data-Based Precision Medicine Beihang University Beijing 100083 China College of Materials Science and Engineering Nanjing University of Aeronautics and Astronautics Nanjing 211106 China Department of Radiation Oncology PLA General Hospital Beijing 100853 China

interventional radiology has been beneficial for patients for over 30 years of age with the combination of diagnostic and therapeutic methods. The radiation affecting occupationally exposed workers should be evaluated by means of the energy spectra and flux of X-rays in the treatment room. The present study aims to obtain the energy spectra of interventional procedures and study the capability of some detectors to evaluate the dose in interventional procedures. These measurements were taken by silicon-drift, CdTe, and CdZnTe detectors. The energy spectra were corrected by the energy-response curve of each detector. The energy-response curves of silicon-drift and CdTe detectors provided by the manufacturers specification were used. The energy response of the CdZnTe detector was measured by 133Ba and 152Eu γ sources. The experimental data were compared with the simulation results, and their perfect agreement provides a way to correct the energy or dose response, which can be used for the personal dosimeter developed by our group. Moreover, the measured energy spectra can be used in individual radiation protection. The present study shows that the CdZnTe detector is a good candidate detector in interventional procedures.

关键词： interventional radiology procedures Energyresponse curve Energy spectrum Radiation protection

interventional OR SEMI-interventional TREATMENT FOR BUDD-CHIARI SYNDROME

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Chinese Medical Sciences Journal 2003年第2期18卷 111-115页

作者：张小明汪忠镐 Dept.of Vascular Surgery People Hospital of Beijing UniversityBeijing 100044 Dept.of Vascular Surgery the First Affiliated Hospital of Zhejiang UniversityHangzhou 310003

Objective. Report the results of interventional or semi-interventional techniques for 173 patients with Budd-Chiari syndrome.Method. This group included 120 males and 53 females. The pathologic lesions composed of localized complete occlusion of inferior vena cava (IVC) (78), IVC stenosis (49), IVC membrane with a hole (37), membrane of hepatic vein (HV) (3), IVC thrombosis (4), IVC membrane with thrombosis (2) and IVC lesion with occlusion of HV (32). Treatment methods included that I: Percutaneous transinferior vena cava angioplasty (PTA) (76); II: IVC PTA with stent (59); III: Percutaneous transhepatic vein recanalization (3); IV: IVC thrombolysis through a catheter (4); V; Combined transcardiac and trans-femoral venous membranotomy and balloon dilation (22); VI: V and stent (17); VII; Stenting during radical surgery (3); VIII: Additional operation after intervention (23).Results. The immediate technique success rate for intervention was 90.1%, for the semi-intervention was 100%. The IVC pressure was reduced from 3 to 29 cmH20. Complications occurred in 8 cases. The death rate was 2.9%. A follow-up study showed the recurrence rates were 14.5% in IVC PTA group, 1.7% in IVC PTA with stent, 18.2% in combined technique without stent and no recurrence was found in other groups.Conclusion. The PTA is the first choice for localized lesions. When elastic recoil occurs, immediate stenting is suggested. The semi-interventional approach is advised for PTA failure and more complicated cases. For those with both IVC lesion and occlusion of HV, the additional operation is needed after IVC intervention.

关键词： interventional semi-interventional Budd-Chiari syndrome

Design and Study of Virtual interventional Surgical System with Force Feedback

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Transactions of Nanjing University of Aeronautics and Astronautics 2019年第3期36卷 424-431页

作者： ZHANG Chao BAI Dongming CHEN Bai College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and Astronautics

A virtual interventional surgical system with force feedback is designed to provide practice before complicated interventional operation and assistance during *** collision detection,vessel deformation calculating and virtual force computing of the virtual system are implemented by using skeleton spring model as the physical modeling foundation,which is based on the mass spring model and easy to construct with high computing *** order to increase the real time performance,the central plane of the vessel model is extracted and then simplified to complete the skeleton *** initiative bending kinematics of the virtual catheter is analyzed so as to provide the virtual system with higher *** experimental results show that the virtual system can well simulate the vessel deformation and force feedback within an interventional surgery,which gives the virtual system better immersion.

关键词： virtual reality interventional surgery skeleton filling force feedback

Advances in Photoacoustic Imaging for interventional Application

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Transactions of Nanjing University of Aeronautics and Astronautics 2018年第6期35卷 924-941页

作者： Zhang Jianhui Yan Kang Wang Boquan Zhang Buchun Gong Xiaojing School of Mechanical and Electric Engineering Guangzhou University State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics Research Lab for Biomedical Optics and Molecular Imaging Shenzhen Institutes of Advanced TechnologyChinese Academy of Sciences Department of Cardiology The Affiliated Hospital of Xuzhou Medical University

The incidence and mortality of cardiovascular diseases and gastrointestinal cancer have gradually increased in recent years,and these diseases have become major social and public-health *** requirements have been proposed for the clinical diagnosis of these diseases in the hope that,by accessing accurate structural information,to further grasp the functional information which closely related to the development of the *** imaging is a new imaging method in which ultrasonic signals are generated from biological samples by laser-pulse *** has the advantages of high optical contrast,large ultrasound penetration depth,and high ***,it can acquire spectral *** integration of a photoacoustic imaging system into a tiny imaging catheter can realize interventional imaging based on photoacoustic *** combination of structural imaging of cardiovascular and gastrointestinal lesion regions with photoacoustic spectroscopy to identify and quantify tissue components can realize highly sensitive functional *** surveying the recent progress in the development of the photoacoustic imaging method for interventional application,with a particular emphasis on intravascular photoacoustic imaging,photoacoustic endoscopy,and photoacoustic spectroscopy,we summarize and identify future research directions for interventional photoacoustic imaging.

关键词： photoacoustic imaging interventional intravascular photoacoustic imaging photoacoustic endoscopy photoacoustic spectroscopy

interventional therapy of malignant obstructive jaundice

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Hepatobiliary & Pancreatic Diseases International 2003年第2期2卷 616-618页

作者： Guang-Hua Feng Yang Cai Zhong Jia De-Qi Yang Hu Chen Hui-Cheng Jin Qiang-Hong Yu Wei Zhu Chu-Xiong Wang Department of General Surgery First People's Hospital 261 Huansha Road Hangzhou 310006 China. caiyang68@***

OBJECTIVE: To assess the short-term results of interventional therapy for malignant ***: In 82 patients with malignant obstructive jaundice, hepatocellular carcinoma was detected in10 patients, carcinoma of gallbladder in 14, hilar biliary carcinoma in 22, pancreatic carcinoma in 20,and hilar metastatic carcinoma in 16. Percutaneous transhepatic biliary internal and/or external drainage(PTBIED) was performed in 61 patients and percutaneous transhepatic insertion of biliary stent (PTIBS)in ***: The level of total serum bilirubin (TSB) was reduced in 71 patients and less markedly inothers. The level of TSB of the 61 patients was redueed from 450.12±113.51 μmol/L before operation to240.25±107.81 μmol/L and 90.91±101.72 μmol/L1 and 2 weeks after operation respectively. TheTSB level of the 21 patients was reduced from 410.53±98.13 μmol/L to 270.23±115.64 μmol/L and105.43±97.85 μmol/L 1 and 2 weeks after operation, respectively. No significant difference was foundin the effect between PTBIED and PTIBS. Short-term complications developed in 33 patients. Sevenpatients died 30 days after ***: interventional therapy may be simple, safe and effective in the treatment of malignantobstructive jaundice.

关键词： interventional radlology biliary obstruction cholestasis

Successful interventional radiological management of postoperative complications of laparoscopic distal pancreatectomy

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World Journal of Gastroenterology 2013年第45期19卷 8453-8458页

作者： Yi-Ping Zhu Jun-Jun Ni Ren-Biao Chen Erik Matro Xiao-Wu Xu Bin Li Hong-Jie Hu Yi-Ping Mou Department of General Surgery Sir Run Run Shaw Hospital Zhejiang University School of Medicine Zhejiang University School of Medicine Department of Radiology Sir Run Run Shaw Hospital Zhejiang University School of Medicine

During the past decade,laparoscopic distal pancreatectomy(LDP)has gained increasing acceptance in the surgical community as a viable treatment option for distal pancreatic ***,the possible complication of post-LDP pancreatic leakage remains a challenge,because it may lead to a series of events resulting in intraperitoneal abscess formation,sepsis,pseudoaneurysm formation,and occasional fatal *** with these complications is extremely difficult and not much experience has been reported to *** report a case involving the aforementioned post-LDP complications successfully managed by interventional radiological techniques while avoiding *** conclude that these management options are attractive,safe and minimally invasive alternatives to standard protocols.

关键词： interventional radiology Pancreatectomy Laparoscopy Postoperative complications

Radiation Exposure for Patients and Staff during Different interventional Procedures Using Anthropomorphic Phantoms:A Complete Evaluation of Different Body Regions

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Biomedical and Environmental Sciences 2023年第12期36卷 1189-1193页

作者： ZHAO Zhi Xin QIAN Pei Yi WANG Hai Hua QIAN Qian YANG Yong JING Li Yan YANG Lu Ting YANG Lei WANG Qiang Hangzhou Hospital for the Prevention and Treatment of Occupational Disease Hangzhou 310014ZhejiangChina School of Public Health Hangzhou Normal UniversityHangzhou 311121ZhejiangChina

interventional radiological procedures performed under the guidance of X-ray imaging tools are widely used to diagnose and treat various ***,radiation exposure can result in many health problems,including cataracts,skin necrosis,radiation burns,hair loss,birth defects,and cancer^([1-2]).Patient exposure during an interventional radiology procedure involves a wide dose range and can reach a level at which deterministic effects may occur^([3]).Although knowledge of radiation safety has greatly improved over the past century,radiation exposure in the healthcare environment remains a risk to both patients and medical ***,given the increasing number of interventions and complexity of cases,there has been growing concern about the radiation exposure of patients and surgical ***,a special evaluation of the exposure of patients and medical staff is necessary to ensure their protection.

关键词： interventional cataract exposure

Influence of lactulose on interventional therapy for HCC patients with hepatocirrhosis and hypersplenism

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Asian Pacific Journal of Tropical Medicine 2016年第2期9卷 191-194页

作者： Deng-Wei Zong Chen-Yang Guo Hong-Tao Cheng Hong-Tao Hu Jin-Cheng Xiao Hai-Liang Li Department of Radiology Intervention Affiliated Cancer Hospital of Zhengzhou University

Objective: To investigate the influence of lactulose on immunity of hepatocellular carcinoma(HCC) patients with hepatocirrhosis and hypersplenism after double-interventional therapies. Methods: A total of 40 HCC patients with hepatocirrhosis and hypersplenism, hospitalized during January 2013 to June 2014, were enrolled and randomized into control group and observation group. Both groups received partial splenic embolization combined with transcatheter arterial chemoembolization. Besides, observation group orally took lactulose 30 m L/d. Four days before interventional therapies and at day 1, 3, 7 and 14 after therapies, fasting venous blood was collected to detect white blood cell count, red blood cell count(RBC), and platelet count(PLT). Four days before therapies and at day 7 and 14 after therapies, the levels of alanine aminotransferase, aspartate transaminase, total bilirubin, malondialdehyde, super-oxide dismutase(SOD), IFN-α, and IL-4 as well as the distribution of T cell subsets in peripheral blood were tested. Complications were observed after interventional therapies. Results: Before interventional therapies the levels of white blood cell count, PLT and RBC in both groups showed no difference, while after interventional therapies the levels of PLT and RBC in both groups showed an increasing tendency(Pinterventional therapies, the level of blood cell as well as that of SOD, IFN-α and IL-4 in serum were significantly higher than that before therapies; meanwhile, the levels of alanine aminotransferase and total bilirubin of observation group after therapies were significantly lower than before and control group(Pinterventional therapies, and improve the antitumor im

关键词： Lactulose interventional therapy Immunity Hepatocellular carcinoma Hepatocirrhosis Hypersplenism