检索结果-南通市图书馆

Risk of Radiation Induced Carotid Artery Stenosis in Supraclavicular Lymph Node Irradiation in Breast Cancer Patients

引用

Journal of Cancer Therapy 2014年第3期5卷 238-245页

作者： Reham Abdulmoniem Yasser Bayoumi Mushabbab Al Asiri Reem Zatar Abdullah Al amro Majed Mosely mohamed Hamada Eyad Al Saeed Abdulrahman Al Hadab Mutahir A. Tunio King Saud University Riyadh KSA Medical Physics Department Comprehensive Cancer Center King Fahad Medical City Riyadh KSA Radiation Oncology Department Comprehensive Cancer Center King Fahad Medical City Riyadh KSA Radiation Oncology Department National Cancer Institute Cairo University Giza Egypt

Background: The risk of carotid vessel stenosis is high after radiotherapy (RT) to neck;however, carotid vessels are unavoidable during supraclavicular (SC-RT) in adjuvant treatment of breast cancer (BC). However, carotid vessels RT dose is less well-understood. We aimed to determine the carotid vessels doses received by different techniques for SC-RT. Materials and Methods: Thirty consecutive BC patients were planned to receive SC-RT and breast after breast conserving surgery (BCS) after taking 5 mm image slices on computed tomography (CT) simulation. Organs at risk (OAR) including carotid vessels, lungs, spinal cord alongwith clinical target volume (CTV) for primary tumor and lymph nodes were delineated. Comparative analysis was done between two treatment plans;three-field conformal radiation therapy (3F-CRT) and four field conformal RT (4F-CRT) for CTV and carotid vessels doses. Results: The 4F-CRT was found better than 3F-3DCRT regarding coverage and homogeneity of the CTV volume. The 98% of the CTV was covered by 84% dose in 3F-CRT and 95% in 4F-CRT (p 0.001). The carotid vessels maximum dose in the in 3F-CRT was 54.5 ± 1.3 Gy compared to 51.6 ± 1.3 Gy in 4F-CRT (p 0.014), however the mean dose did not differ significantly (p value 0.8). The ipsilateral lung dose did not differ between the two techniques (p Value 0.9). Conclusion: The 4F-CRT plan was found better than 3F-CRT in CTV coverage with minimal dose to the carotid vessel and without significant higher dose to the ipsilateral lung.

关键词： Breast Cancer Supraclavicular Radiotherapy Carotid Vessel Dose

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Diffusion-Weighted MR Imaging of the Benign Hepatic Focal Lesions

引用

Open Journal of Radiology 2014年第1期4卷 136-143页

作者： Adel El-Badrawy Germeen Albair Ashmallah Ahmed mohamed Tawfik Sherif Abdelfattah Manal Salah-Eldin Emad Eldin Azmy amro Awad El-Karef Ghada A. Salem Omar Farouk Clinical Hematology Department Faculty of Medicine Mansoura University Mansoura Egypt Department of Surgical Oncology Faculty of Medicine Mansoura University Mansoura Egypt Medical Oncology Department Faculty of Medicine Mansoura University Mansoura Egypt Pathology Department Faculty of Medicine Mansoura University Mansoura Egypt Radiology Department Faculty of Medicine Mansoura University Mansoura Egypt Tropical Medicine Department Faculty of Medicine Zagazig University Egypt

Purpose: To determine the role of diffusion weighted MR imaging and apparent diffusion coefficient (ADC) in benign hepatic focal lesions. Method and Materials: This study included 47 patients (29 M, 18 F with mean age of 43 years) with benign hepatic focal lesions. They were cyst (n = 8), hemangioma (n = 23), abscess (n = 5), adenoma (n = 5), focal nodular hyperplasia (n = 4) and nodular regenerative hyperplasia (n = 2). They underwent routine MR imaging and diffusion MR weighted imaging using 1.5 tesla MR unit (Symphony-Siemens). Diffusion MR imaging was done using spin echo type of single shot echo planar imaging (EPI) with b value of 0, 500 & 1000 sec/mm2. The apparent diffusion coefficient (ADC) map was reconstructed and ADC value was measured. The mean ADC values correlated with histo-pathological results as well as follow-up imaging results. Results: Adequate ADC maps were obtained in 47 patients. The mean ADC values were 3.4 ± 0.12 × 10-3 mm2/sec in cystic lesion, 2.23 ± 0.08 × 10-3 mm2/sec in hemangioma, 1.94 ± 0.05 × 10-3 mm2/sec in abscess, 1.72 ± 0.07 × 10-3 in focal nodular hyperplasia, 1.65 ± 0.06 × 10-3 mm2/sec in adenoma, 1.62 ± 0.07 × 10-3 mm2/sec in nodular regenerative hyperplasia. The mean ADC values were significantly different within benign hepatic focal lesions (P < 0.001). The differences between the mean ADC values of FNH, adenoma and NRH were not statistically significant (P < 0.23). Conclusion: Diffusion weighted MR imaging is a new imaging modality for diagnosis and characterization of different benign hepatic focal lesions, particularly in patient with renal dysfunction.

关键词： Diffusion MR Imaging Apparent Diffusion Coefficient Benign Hepatic Focal Lesion

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Production and Marketing Problems for Sugar Cane Growers in Qena Governorate

引用

Journal of Life Sciences 2011年第10期5卷 844-849页

作者： Bahgat mohamed Abdel-Maksoud amro Bahaa-Eldin Ahmed El-Shrabassee Department of Rural Sociology and Agricultural Extension Faculty of Agriculture University of Assiut Assiut 71526 Egypt

Sugar cane is a principal agricultural product in Egypt. Over 48% of its area is grown in Qena governorate. The agricultural extension system should identify problems and needs for farmers and provide them with their solutions. The main objective of this paper was to know production and marketing problems for sugar cane growers in Qena governorate, Egypt. Six focus groups were organized for farmers in two villages and a survey was conducted on 224 extension personnel or 93 % of all extension personnel at districts and villages levels in Qena governorate to collect necessary data. The most important perceived production problems were: spread of weeds and insects, weak role of agricultural extension, shortage and high costs of fertilizers and labor, and high costs of production, insecticides and irrigation. The most important perceived marketing problems were: high costs and unsystematic cutting, shortage and high costs of transportation, delay of cutting and delivery of product to the factory, inaccurate weigh and low prices of the product. A great role lies on the agricultural extension system to identify such problems and provide farmers with their solutions in order to increase the agricultural productivity of this crop in Qena governorate.

关键词：农业生产力种植者甘蔗农业技术推广体系营销灌溉成本农产品农民

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：