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Research on Using IMRT Plan for Preoperative Rectal Cancer Patients

International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2020年第4期9卷 165-177页

作者： Quang Bui vinh Soai Dang Quoc Cuong Bui Xuan Toan Hoang Van Truong Vu Radiotherapy Department Hanoi Oncology Hospital Hanoi Vietnam Medicinal Supplies-Medical Physics Division Hanoi Oncology Hospital Hanoi Vietnam

Aims: Research the possibility of using IMRT for rectal cancer patients in preoperative radiotherapy. Methods and Material: The research object is the preoperative radiotherapy plan for rectal cancer patients. The research group made two plans (IMRT, 3DCRT) for each image series of 34 rectal cancer patients who have received preoperative radiotherapy in Hanoi Oncology Hospital;and then compared the dose distribution on PTV, bladder, intestine, femoral bones, the average MU, and QA results of two types of plan. Results: The 95% isodose line and 50% isodose of IMRT plan are closer than those of 3DCRT plan. The average dose of PTV in IMRT plan and 3DCRT plan are 5006 ± 23 cGy and 5036 ± 42 cGy, respectively. The HTCI and HI values of IMRT and 3D plan are 0.97 ± 0.026 and 5.37 ± 1.32;1.00 ± 0.003 and 7.08 ± 0.88. About the dose of organ at risk: The maximum dose, average dose on the right, left femoral head in the IMRT plan are less than those values in the 3DCRT plan (6.2 Gy, 6 Gy, 7.4 Gy, 9 Gy, respectively). The maximum dose and average dose on the bladder of the IMRT plan are smaller than those values of the 3DCRT plan (5.3 Gy, 1.5 times, respectively). The maximum dose and average dose of intestine in the IMRT plan was less than those values in the 3DCRT plan (4.3 Gy, 1.54 times, respectively). The MU number of IMRT plan is 1.5 times bigger than that of 3DCRT plan. Gamma index of IMRT plan is better than that of 3DCRT plan (99% compared with 97%). Conclusions: Using IMRT plan in preoperative radiotherapy for rectal cancer patients can still ensure covered PTV as well as the 3D PLAN. Furthermore, the dose of PTV in the IMRT plan is more uniform than those in the 3D plan, and the dose effect on the OAR surrounding PTV is much lower than when using the 3D plan. When IMRT plan were used to treat the preoperative rectal cancer patients, the LINAC took more time than when using 3DCRT plan.

关键词： Rectal Cancer Preoperative Radiotherapy IMRT HI HTCI Gamma Index

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Environmental and External Costs of Yali Hydropower Plant and Policy Recommendations in Vietnam

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Journal of Environmental Protection 2020年第4期11卷 344-358页

作者： Nguyen Van Song Vu Ngoc Huyen Nguyen Van Hanh Nguyen Xuan Diep Nguyen Xuan Huu Pham Thanh Lan Ho Ngoc Cuong Do thi Diep Tran thi Thu Trang Nguyen thi Minh Phuong Faculty of Economics and Rural Development (FERD) Vietnam National University of Agriculture (VNUA) Trauquy Gialam Hanoi Vietnam Viet Nam Institute of Energy (IEN) Hanoi Vietnam Thainguyen University of Economics & Business Administration (TNUEBA) Thainguyen Vietnam Vietnamese Academy of Forest Sciences (VAFS) Hanoi Vietnam vinh University Vinh Vietnam

The purpose of this study is to estimate the monetary value of the main environmental and external costs of Yali Hydropower Plant (YHPP) and to incorporate them into the financial viability indices of the plant, namely its net present value and electricity price. The results were found that if the electricity price is kept at its original level of 5.2 US cents/kWh to cover direct costs only, the net present value of the plant would be reduced to about 27% by incorporating environmental and external costs. Alternatively, the electricity price would have to be increased to 5.68 US cents/kWh in order to cover the full costs of YHPP and to maintain the original net present value. The main policy recommendations are: Government regulations should require that the financial analysis and appraisal of all future electricity sources include the full cost of these schemes, including not only direct costs but also environmental and external costs related to preventing or mitigating the environmental impact caused by them. An appropriate financial mechanism should be established to allocate the revenue from full cost electricity pricing to a fund to cover the environmental protection and compensation costs.

关键词： Environmental and External Costs Hydro-Electricity Electricity Price Yali Hydropower

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游走东西两岸制作甜品——从西雅图到纽约,再回到西雅图,这位越南裔美籍糕点师成为冉冉升起的新星

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空中英语教室（高级版．彭蒙惠英语） 2021年第10期 14-15,40,41页

作者： Tan vinh 马励(译) 不详

08即使2020年春天的新冠病毒的蔓延让糕点师劳伦·陈(译音)失去了在纽约著名Gramercy酒馆的工作,她的糕点仍备受关注。她的越南法式甜点曾被纽约各家媒体报道过。颇负盛名的大餐馆都希望她能短期进驻,贩售其甜点。就在前景一片光明的时... 详细信息

08即使2020年春天的新冠病毒的蔓延让糕点师劳伦·陈(译音)失去了在纽约著名Gramercy酒馆的工作,她的糕点仍备受关注。她的越南法式甜点曾被纽约各家媒体报道过。颇负盛名的大餐馆都希望她能短期进驻,贩售其甜点。就在前景一片光明的时候,她却收到华盛顿州费德勒尔韦市家中传来的消息,父亲因胸痛而必须紧急就医。

关键词：华盛顿州费德勒甜品糕点媒体报道颇负盛名甜点西雅图

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Analyzing Planning Techniques for Whole Brain Radiotherapy

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International Journal of Medical Physics, Clinical Engineering and Radiation Oncology 2020年第1期9卷 1-13页

作者： Soai Dang Quoc Quang Bui vinh Cuong Bui Xuan Toan Hoang Van Truong Vu Medicinal Supplies Medical Physics Division Hanoi Oncology Hospital Hanoi Vietnam Radiotherapy Department Hanoi Oncology Hospital Hanoi Vietnam

Aims: this study compares data between the Field in Field planning and Wedge planning techniques to figure out which technique has better dose coverage and distribution for PTV, and, if using FiF technique for whole brain treatment, how many beams will have better plan. Methods: 56 patients, who need to radiate whole brain with 30 Gy/10 fractions, have been selected for this study. Four plans have been made for each patient (FiF1—one subfield per field plan, FiF2—two subfields per field plan, FiF3—three subfields per field plan, and a Wedge plan). Results: The results of Field in Field plans including Compare dose distribution on the transverse CT slice, plan evaluation using DVH, number MU of plan, Dmax, HI, HTCI, DmaxPTV, DmeanPTV. Volume of PTV with the dose over 105% prescribed dose, dose of organ at risk, and Quality Assurance (QA) plan, are better than those of Wedge plan. Conclusions: Plans using Field in Field technique has better coverage, is more homogeneous in dose distribution than plan using Wedge technique. When using Field in Field technique for whole brain radiotherapy, using three subfields per field has better result than two subfields per field and one subfield per field.

关键词： Field in Field Whole Brain Radiotherapy HI HTCI Gamma Index

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Enhanced Electrochemical and Physical Properties of Ag/AgCl Planar Reference Electrodesin Potentiometric Sensors by Graphite Oxide Layer

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材料科学与工程（中英文A版） 2019年第2期9卷 83-90页

作者： Tung Son vinh Nguyen Tien Minh Huynh Tin Chanh Duc Doan Chien Mau Dang Community 6 Linh Trung Ward Thu Duc District Ho Chi Minh City 800010 Vietnam

The most common reference electrode (RE) which is used in electrochemical measurements is the Ag/AgCl electrode. In this study, we present a novel solid-state Ag/AgCl planar electrode that was coated with a thin layer of Graphite Oxide (GO) as a protective layer. The Ag/AgCl planar electrode was fabricated by using the photolithography and lift-off method combined with the Ag[NH3]2Cl complex. The GO was produced by Hummer’s method and was deposited on top of the Ag/AgCl layer by drop-casting method. The layers of the fabricated reference electrode were characterized by micro Raman spectroscopy, Scanning Electron Microscopy (SEM) and Energy-dispersive X-ray spectroscopy (EDX). The responding time of the planar electrode was short and the signal was more stable in comparison to the plainAg/AgCl electrode. The Open Circuit Potential (OCP) measurement with the fabricated electrode as the RE and the platinum electrode as the working electrode in electrolyte solutions which had various pH values was performed with a linear response in pH ranges from pH 5 to pH 8 and the linear correlation coefficient (R^2 = 0.9899). Moreover, the coating of the GO layers also enhanced the durability of the modified electrode. The results showed that the modified Ag/AgCl electrode with a thin layer GO as the protective layer could be used as plana REs for the potentiometric sensors.

关键词： Graphite oxide potentiometric sensor Ag/AgCl reference electrode

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农田生态沟渠效能研究

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黑龙江生态工程职业学院学报 2017年第5期30卷 5-7,68页

作者： Tang Van Tai Tran Ngoc Binh Tang thi Thanh Sang le Hong Hanh 东南大学土木工程学院江苏南京210096 vinh Medical University vinh University

传统混凝土沟渠主要使用浆砌石、钢筋混凝土等材料建造成排水沟渠,难以有效去除农田污水中的富营养化,引起河道污染~[1]。本实验在调查太湖运河沿岸农田的污染情况的基础上,设计并建造复合生态沟渠示范工程,然后根据季节差异种植复合的... 详细信息

传统混凝土沟渠主要使用浆砌石、钢筋混凝土等材料建造成排水沟渠,难以有效去除农田污水中的富营养化,引起河道污染~[1]。本实验在调查太湖运河沿岸农田的污染情况的基础上,设计并建造复合生态沟渠示范工程,然后根据季节差异种植复合的植物。通过观察植物生长情况研究生态沟渠的植生价值,检测生态沟渠的水质变化情况以检验农田污水富营养化的去除效能。

关键词：生态沟渠农田污水太滆运河

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Analyze the Dose Results Calculated with AAA Algorithm in Eclipse Software of New Treatment Planning System

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Journal of Pharmacy and Pharmacology 2019年第6期7卷 309-315页

作者： Soai DANG QUOC Quang BUI vinh Cuong BUI XUAN Toan HOANG VAN Truong VU Medicinal Supplies Medical Physics DivisionHanoi Oncology Hospital42A Thanh Nhan StreetHai Ba Trung DistrictHanoi 100000Vietnam Department of Radiotherapy Hanoi Oncology Hospital42A Thanh Nhan StreetHai Ba Trung DistrictHanoi 100000Vietnam

In this paper,the authors investigate the differences between the dose results calculated with AAA(Anisotropic Analytical Algorithm)algorithm in Eclipse 13.0 treatment planning system,which has just commissioned,with the measured *** AAA algorithm in the Eclipse software is used to calculate the absolute dose,relative dose in profile line,and percent depth dose of some specific field size in Blue *** calculated dose results were compared with measured dose based on Technical Reports Series No.430 of International Atomic Energy Agency(IAEA No.430).The authors have used CC13 ion chamber,Famer Chamber,water phantom,and Omnipro software to measure relative,absolute doses of these fields *** AAA algorithm was also used to calculate the doses in IMRT(Intensity Modulated Radiotherapy)plan of fifty head and neck cancer *** IMRT plans were controlled quality in some points with plastic phantom,and famer chamber *** differences between calculated dose,and measured doses are in the limit of IAEA 430 *** results of the QA IMRT plan processing are fitting with ESTRO(European Society Therapeutic Radiation Oncology)Booklet No.9.

关键词： Analytical anisotropic algorithm dosimetry relative dose absolute dose

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Factors Affecting Community-Based Tourism Development and Environmental Protection: Practical Study in Vietnam

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Journal of Environmental Protection 2020年第2期11卷 124-151页

作者： Nguyen thi Minh Phuong Nguyen Van Song Tran Xuan Quang vinh University (VU) Vinh Vietnam Vietnam National University of Agriculture (VNUA) Hanoi Vietnam Academy of Social Sciences Vietnam Academy of Social Sciences Hanoi Vietnam

Community-based tourism (CBT) is considered as one of the typical types of tourism towards sustainable development with three important goals such as bringing back economic benefits, protecting natural environment and preserving indigenous cultural values. Therefore, this paper analyzes the factors that affect community ecotourism development associated with environmental protection in emerging economies, including Vietnam, by the method of key and community tourism potential value assessment with 721 sample surveys. In this paper, we have applied to assess the key factors of tourism in Vietnam and other key points to have more comprehensive solutions to promote the development of community-based tourism with environmental protection. The article has used guest-based approach and method of assessing the key success factors. The results of researching factors to develop community tourist (impacting tourist community needs of tourists) by running Logit function have shown the great influence of factors such as: environmental protection (influence factor +3.585780, with a statistical significance of 99%), security and safety (+3.024816—statistical significance 99%) followed by infrastructure conditions & facilities for the community based tourism, the level of information etc… for your community based tourism needs. From the research results, we propose the following policy groups: 1) Developing guidelines for CBT, the first step as a basis for the development of community based tourism laws later;2) Policies related to the implementation of planning, development of key community tourist areas and destinations;3) Policies related to the development of community-based tourism associated with the protection of natural and cultural environments;4) Policies related to tourism management;coordinating monitoring of community tourism resource points;policies related to the local community in community tourism development;5) Policies related to human resource development;promo

关键词： Community Tourism Development of Community-Based Tourism Environment Protection Vietnam

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Predicting 3D Radiotherapy Dose-Volume Based on Deep learning

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Intelligent Automation & Soft Computing 2024年第2期39卷 319-335页

作者： Do Nang Toan Lam Thanh Hien Ha Manh Toan Nguyen Trong vinh Pham Trung Hieu Institute of Information Technology Vietnam Academy of Science and TechnologyHanoi10072Vietnam Faculty of Information Technology Lac Hong UniversityBien HoaDong Nai76120Vietnam

Cancer is one of the most dangerous diseaseswith *** of the principal treatments is radiotherapy by using radiation beams to destroy cancer cells and this workflow requires a lot of experience and skill from doctors and *** our study,we focused on the 3D dose prediction problem in radiotherapy by applying the deeplearning approach to computed tomography(CT)images of cancer *** image data has more complex characteristics than normal image data,and this research aims to explore the effectiveness of data preprocessing and augmentation in the context of the 3D dose prediction *** proposed four strategies to clarify our hypothesis in different aspects of applying data preprocessing and *** strategies,we trained our custom convolutional neural network model which has a structure inspired by the U-net,and residual blocks were also applied to the *** output of the network is added with a rectified linear unit(Re-Lu)function for each pixel to ensure there are no negative values,which are absurd with radiation *** experiments were conducted on the dataset of the Open Knowledge-Based Planning Challenge which was collected from head and neck cancer patients treatedwith radiation *** results of four strategies showthat our hypothesis is rational by evaluating metrics in terms of the Dose-score and the Dose-volume histogram score(DVH-score).In the best training cases,the Dose-score is 3.08 and the DVH-score is *** addition,we also conducted a comparison with the results of another study in the same context of using the loss function.

关键词： CT image 3D dose prediction data preprocessing augmentation

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A case of Sjogren's syndrome evolving into multicentric reticulohistiocytosis

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Rheumatology & Autoimmunity 2023年第3期3卷 179-184页

作者： Daniel Gonzalez vinh Lu Madeline Bonnet Rachelle Gietzen Anthony Linfante Enrique Medina Vijaya Murthy Division of Rheumatology University of Texas Medical BranchGalvestonTexasUSA Department of Internal Medicine University of Texas Medical BranchGalvestonTexasUSA University of Texas Medical Branch(UTMB)John Sealy School of Medicine GalvestonTexasUSA Department of Pathology University of Texas Medical BranchGalvestonTexasUSA Department of Dermatology University of Texas Medical BranchGalvestonTexasUSA

Introduction:Multicentric reticulohistiocytosis(MRH)is a rare disease that is known to affect the skin and joints,*** is considered a rare form of non-Langerhans cell histiocytosis(Group C)that can cause destructive inflammatory arthritis involving both the small and large *** eruptions of periungual,“coral beads”and nodules appearing over the distal fingers are considered pathognomonic clues for identifying this *** evaluation of the cutaneous papules typically shows infiltrative histiocytes and multinucleated giant *** no well-established therapies exist to date,a variety of immunosuppressants have been used with varying degrees of *** Description:A 53-year-old Caucasian female patient with a family history of rheumatoid arthritis and a personal history of Sjogren's syndrome presented to the rheumatology clinic complaining of pain in her bilateral hands and *** were several small,papulo-nodular lesions ranging from 1 to 2mm in size noted at the base of her nails.A 4mm punch biopsy of one of the papules from the neck showed dermal infiltration of eosinophilic mononucleated and multinucleated giant cells with“ground glass”appearing cytoplasm consistent with MRH.X-ray of her hands showed periarticular demineralization and erosions surrounding several bilateral proximal and distal interphalangeal joints,and thus tofacitinib in addition to methotrexate,hydroxychloroquine,and dexamethasone(dosed weekly)was started to help control any further articular ***:Our aim is to further support the relation of MRH with autoimmune diseases,including Sjogren's *** diseases have been reported in association with MRH,although a clear association has yet to be made.

关键词： erosive arthritis multicentric reticulohistiocytosis Sjogren's syndrome

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