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Contrast-enhanced 3D ultrasound in the radiofrequency ablation of liver tumors 被引量:19
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作者 Edward Leen senthil kumar +4 位作者 Shahid A Khan Gavin Low Keh Oon Ong Paul Tait Mike Averkiou 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第3期289-299,共11页
Liver metastases and hepatocellular carcinomas are two of the most common causes of cancer deaths in the world.Radiofrequency ablation(RFA) is a well recognized,effective and minimally invasive means of treating malig... Liver metastases and hepatocellular carcinomas are two of the most common causes of cancer deaths in the world.Radiofrequency ablation(RFA) is a well recognized,effective and minimally invasive means of treating malignant hepatic tumors.This article describes the use of contrast-enhanced 3D ultrasound(CE-3DUS) in the staging,targeting and follow-up of patients with liver tumors undergoing RFA.In particular,its value in the management of large hepatic lesions will be illustrated.Current limitations of CE-3DUS and future developments in the technique will also be discussed.In 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. 展开更多
关键词 Liver tumors Radiofrequency ablation Contrast enhanced 3D ultrasound
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水泥基材料产生的粉末废弃物的潜在应用与挑战 被引量:2
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作者 于皓 林忠财 +1 位作者 李永学 senthil kumar 《混凝土》 CAS 北大核心 2018年第8期100-103,共4页
目前,如何有效地回收和再利用那些建造与拆卸废料,对于减少建筑垃圾造成的环境问题十分重要。研究数据表明,在建筑废料回收的过程中,将产生大量的粉末废料,其数量占总混凝土废弃物的20%~50%。在已有的研究成果中,粉末废料可用作混凝土... 目前,如何有效地回收和再利用那些建造与拆卸废料,对于减少建筑垃圾造成的环境问题十分重要。研究数据表明,在建筑废料回收的过程中,将产生大量的粉末废料,其数量占总混凝土废弃物的20%~50%。在已有的研究成果中,粉末废料可用作混凝土生产中水泥的替代物和熟料生产中原材料的替代物。同时,由于具有丰富的钙含量,它也可作为一种吸收CO2的潜在材料。综合已有的大量文献,概述了从建筑废料中提取的水泥基粉末废弃物在不同应用中的挑战和潜力。总的来讲,粉末废料具有很大的实际应用潜力,可用作建筑业中原材料的替代物,也是减少CO_2排放的重要途径之一,这些将切实有助于自然资源的保护和环境的可持续发展。 展开更多
关键词 水泥基材料 建筑及拆卸废料 粉末废弃物 碳化 二氧化碳捕获
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Commissioning of TrueBeamTM Medical Linear Accelerator: Quantitative and Qualitative Dosimetric Analysis and Comparison of Flattening Filter (FF) and Flattening Filter Free (FFF) Beam 被引量:4
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作者 Ravindra Shende Gourav Gupta +1 位作者 Ganesh Patel senthil kumar 《International Journal of Medical Physics, Clinical Engineering and Radiation Oncology》 2016年第1期51-69,共19页
Motive of the study is to present quantitative and qualitative analysis and comparison of beam data measurement with FF (flattening filter) and FFF (flattening filter free) beam in a Varian TrueBeam<sup>TM</s... Motive of the study is to present quantitative and qualitative analysis and comparison of beam data measurement with FF (flattening filter) and FFF (flattening filter free) beam in a Varian TrueBeam<sup>TM</sup> Medical Linear Accelerator. Critique of beam characterization and evolution of dosimetric properties for 6 MV, 10 MV, 15 MV FF beam and 6 MVFFF, 10 MVFFF FFF beam has been carried out. We performed the comparison of photon beam data for two standard FF photon energy 6 MV, 10 MV verses 6 MVFFF, and 10 MVFFF FFF beam. Determination and comparison of parameter involved PDD (Percentage depth dose), Depth dose profile, Symmetry, Flatness, Quality index, Relative output factor, Penumbra, Transmission factor, DLG (Dosimetric leaf gap), in addition to degree of Un-flatness and off-axis ratio of FFF beam. Outcomes of presenting study had shown that change of various parameters such as Percentage depth dose curves, Shape of the depth dose profile, Transmission, Value of quality index and significant rise in surface dose for FFF in comparison with FF beam. Differences in the output factor at lower and higher field sizes for FFF beam compared to that of FF beam were found. The maximum output factor deviation between 6 MV and 6 MVFFF was found to be 4.55%, whereas in 10 MV and 10 MVFFF was 5.71%. Beam quality TPR20/10 for FFF beam was found to be lesser in magnitude, 5.42% for 6 MVFFF whereas 4.50% for 10 MVFFF compared to 6 MV and 10 MV FF beam respectively. Jaw transmission and interleaf leakage for FFF beam were found to be lesser than FF beam. Also DLG for FFF beam was found to be lesser in magnitude comparable to that of flattened beam. This study is mainly inclined towards evaluation and comparison of the FF and FFF beam. It has been observed that, the outcome of a commissioning beam data generation fully complies with vendor specification and published literature. 展开更多
关键词 True Beam Medical Linear Accelerator Commissioning Photon Beam Data Flattening Filter Flattening Filter Free
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Multicentered prospective investigator initiated study to evaluate the clinical outcomes with extracorporeal cytokine adsorption device (CytoSorb®) in patients with sepsis and septic shock 被引量:5
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作者 Rajib Paul Prachee Sathe +3 位作者 senthil kumar Shiva Prasad Ma Aleem Prashant Sakhalvalkar 《World Journal of Critical Care Medicine》 2021年第1期22-34,共13页
BACKGROUND Sepsis is a severe clinical syndrome related to the host response to infection.The severity of infections is due to an activation cascade that will lead to an auto amplifying cytokine production:The cytokin... BACKGROUND Sepsis is a severe clinical syndrome related to the host response to infection.The severity of infections is due to an activation cascade that will lead to an auto amplifying cytokine production:The cytokine storm.Hemoadsorption by CytoSorb®therapy is a new technology that helps to address the cytokine storm and to regain control over various inflammatory conditions.AIM To evaluate prospectively CytoSorb®therapy used as an adjunctive therapy along with standard of care in septic patients admitted to intensive care unit(ICU).METHODS This was a prospective,real time,investigator initiated,observational multicenter study conducted in patients admitted to the ICU with sepsis and septic shock.The improvement of mean arterial pressure and reduction of vasopressor needs were evaluated as primary outcome.The change in laboratory parameters,sepsis scores[acute physiology and chronic health evaluation(APACHE II)and sequential organ failure assessment(SOFA)]and vital parameters were considered as secondary outcome.The outcomes were also evaluated in the survivor and nonsurvivor group.Descriptive statistics were used;a P value<0.05 was considered RESULTS Overall,45 patients aged≥18 and≤80 years were included;the majority were men(n=31;69.0%),with mean age 47.16±14.11 years.Post CytoSorb®therapy,26 patients survived and 3 patients were lost to follow-up.In the survivor group,the percentage dose reduction in vasopressor was norepinephrine(51.4%),epinephrine(69.4%)and vasopressin(13.9%).A reduction in interleukin-6 levels(52.3%)was observed in the survivor group.Platelet count improved to 30.1%(P=0.2938),and total lung capacity count significantly reduced by 33%(P<0.0001).Serum creatinine and serum lactate were reduced by 33.3%(P=0.0190)and 39.4%(P=0.0120),respectively.The mean APACHE II score was 25.46±2.91 and SOFA scores was 12.90±4.02 before initiation of CytoSorb®therapy,and they were reduced significantly post therapy(APACHE II 20.1±2.47;P<0.0001 and SOFA 9.04±3.00;P=0.0003)in the survivor group.The predicted mortality in our patient population before CytoSorb®therapy was 56.5%,and it was reduced to 48.8%(actual mortality)after CytoSorb®therapy.We reported 75%survival rate in patients given treatment in<24 h of ICU admission and 68%survival rates in patients given treatment within 24-48 h of ICU admission.In the survivor group,the average number of days spent in the ICU was 4.44±1.66 d;while in the nonsurvivor group,the average number of days spent in ICU was 8.5±15.9 d.CytoSorb®therapy was safe and well tolerated with no adverse events reported.CONCLUSION CytoSorb®might be an effective adjuvant therapy in stabilizing sepsis and septic shock patients.However,it is advisable to start the therapy at an early stage(preferably within 24 h after onset of septic shock). 展开更多
关键词 Acute physiology and chronic health evaluation score HEMADSORPTION SEPSIS Sequential organ failure assessment score VASOPRESSOR
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Factors Associated with Poor Sleep Quality among Type 2 Diabetes Mellitus Patients on Insulin Therapy 被引量:1
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作者 Abilash Sathyanarayanan Elvin Benny +3 位作者 Jenit Osborn senthil kumar Suresh Prabhu Anil C. Mathew 《Journal of Diabetes Mellitus》 2015年第4期206-210,共5页
The aim of this study is to investigate the possible risk factors of poor sleep quality among patients with type 2 diabetes mellitus on insulin therapy. The factors considered were age, sex, body mass index (BMI), gly... The aim of this study is to investigate the possible risk factors of poor sleep quality among patients with type 2 diabetes mellitus on insulin therapy. The factors considered were age, sex, body mass index (BMI), glycosylated haemoglobin (HbA1c), duration of diabetes and depression. A total of 202 diabetic patients aged 20 years or older were included in the study. The results showed that female sex and depression were independent risk factors for poor sleep quality among type 2 diabetics on insulin therapy. Findings may contribute to sleep disorder control in female patients with type 2 diabetes mellitus which has been linked to glycemic control. 展开更多
关键词 DIABETES SLEEP Quality INSULIN ADMINISTRATION DEPRESSION
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Charge Syndrome—A Case Report
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作者 A. Ravindran A. Amirthagani +5 位作者 Prince Peter Dhas S. Nagarajan senthil kumar Satheesh kumar   Venkatesh 《International Journal of Otolaryngology and Head & Neck Surgery》 2015年第2期156-162,共7页
CHARGE syndrome is a rare, recently well recognized entity with non-random pattern of congenital anomalies. The syndrome associations consist of C-coloboma of the eyes, H-heart disease, A-atresia of the choanae, R-ret... CHARGE syndrome is a rare, recently well recognized entity with non-random pattern of congenital anomalies. The syndrome associations consist of C-coloboma of the eyes, H-heart disease, A-atresia of the choanae, R-retarded growth and development, G-genital hypoplasia/genitourinary anomalies and E-ear anomalies and/or hearing loss. All anomalies are not seen in every case and a varied spectrum of associations is seen in most of the cases. The exact incidence is not known. However, the reported prevalence is approximately 1:10,000 births. We report one such case. 展开更多
关键词 CHARGE SYNDROME Choanal ATRESIA COLOBOMA
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