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Contrast-enhanced 3D ultrasound in the radiofrequency ablation of liver tumors

World Journal of Gastroenterology 2009年第3期15卷 289-299页

作者： Edward Leen Senthil Kumar Shahid A Khan Gavin Low keh oon ong Paul Tait Mike Averkiou Imaging Science Department Imperial College LondonLondon W12 0NNUnited Kingdom Department of Hepatology and Gastroenterology Imperial College LondonLondon W12 0NNUnited Kingdom Department of Mechanical Engineering University of CyprusLondon W12 0NNUnited Kingdom

Liver metastases and hepatocellular carcinomas are two of the most common causes of cancer deaths in the *** ablation(RFA) is a well recognized,effective and minimally invasive means of treating malignant hepatic *** article describes the use of contrast-enhanced 3D ultrasound(CE-3DUS) in the staging,targeting and follow-up of patients with liver tumors undergoing *** particular,its value in the management of large hepatic lesions will be *** limitations of CE-3DUS and future developments in the technique will also be *** summary,CE-3DUS is useful in the RFA of liver tumors with improved detection and display of occult lesions and recurrence,in the assessment of lesional geometry and orientation for a more accurate planning and guidance of multiple RFA needle electrodes in large tumors and in the evaluation of residual or recurrent disease within the immediate and/or subsequent follow-up periods.

关键词：肝肿瘤射频消融三维超声检查肝细胞癌

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Sustainable green technology on wastewater treatment:The evaluation of enhanced single chambered up-flow membrane-less microbial fuel cell

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Journal of Environmental Sciences 2018年第4期30卷 295-300页

作者： Wei-Eng Thung Soon-An ong Li-Ngee Ho Yee-Shian Wong Fahmi Ridwan Yoong-Ling oon Yoong-Sin oon Harvinder Kaur Lehl Water Research Group (WAREG) School of Environmental Engineering Universiti Malaysia Perlis School of Materials Engineering Universiti Malaysia Perlis

This study demonstrated the potential of single chamber up-flow membrane-less microbial fuel cell（UFML-MFC） in wastewater treatment and power generation. The purpose of this study was to evaluate and enhance the performance under different operational conditions which affect the chemical oxygen demand（COD） reduction and power generation,including the increase of KCl concentration（MFC1） and COD concentration（MFC2）. The results showed that the increase of KCl concentration is an important factor in up-flow membrane-less MFC to enhance the ease of electron transfer from anode to cathode. The increase of COD concentration in MFC2 could led to the drop of voltage output due to the prompt of biofilm growth in MFC2 cathode which could increase the internal resistance. It also showed that the COD concentration is a vital issue in up-flow membrane-less *** the COD reduction was up to 96%, the power output remained constrained.

关键词： MFC Up-flow Membrane-less KCl concentration COD Ionic strength Biocathode Biofilm

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Predictive Value of Resting Pd/Pa for Fractional Flow Reserve Assessed with Monorail Pressure Microcatheter in Real-World Practice

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Cardiovascular Innovations and Applications 2019年第B7期4卷 113-120页

作者： Keng Tat Koh Asri Said Khaw Chee Sin oon Yen Yee Erwin Mulia Tan Chen Ting Francis Shu Eng Pbeng Ho Kian Hui Voon Chi Yen Cham Yee Ling Khiew Ning Zan Nor Hanim Mohd Amin Alan Fong Yean Yip ong Tiong Kiam Department of Cardiology Sarawak Heart Centre3rd RoundaboutSamarahan Expressway94300 Kota SamarahanSarawakMalaysia Faculty of Medicine and Health Sciences University Malaysia Sarawak94300 Kota SamarahanSarawakMalaysia Clinical Research Centre Sarawak General HospitalJalan Hospital 93586 KuchingSarawakMalaysia

Background and Objectives:The aims of this study were(1)to examine the diagnostic accuracy of resting timeaveraged distal coronary pressure(Pd)to mean aortic pressure(Pa)ratio to predict hyperemic fractional flow reserve(FFR)and(2)to identify a resting Pd/Pa value that can preclude the need for hyperemic FFR assessed with use of a monorail pressure ***:A total of 191 stenoses were *** exclusions,157 FFR data sets from 103 patients were ***:Resting Pd/Pa showed poor agreement with hyperemic FFR(r=0.619,P<0.001).The receiver operating characteristic curve for resting Pd/Pa with reference to hyperemic FFR of 0.80 or less showed an area under the curve of 0.800(95%confi dence interval 0.732– 0.868,P<0.001),with the greatest diagnostic accuracy of 74.5%for resting Pd/Pa of less than *** Pd/Pa of 0.96 or greater had a sensitivity of 100%and a negative predictive value of 100%,and resting Pd/Pa of 0.82 or less had a specifi city of 98.9%and a positive predictive value of 94.1%to predict abnormal FFR of 0.80 or *** results were consistent regardless of the vessels studied,the location of lesions,and the severity of ***:Resting Pd/Pa showed poor agreement with hyperemic FFR assessed with use of a monorail pressure ***,resting Pd/Pa of 0.96 or greater had excellent sensitivity and negative predictive value to predict normal hyperemic FFR,and resting Pd/Pa of 0.82 or less had excellent specifi city and positive predictive value to predict abnormal hyperemic FFR.

关键词： fractional fl ow reserve monorail pressure catheter resting time-averaged distal coronary pressure to mean aortic pressure ratio

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