检索结果-南通市图书馆

Attention Based Multi-Patched 3D-CNNs with Hybrid Fusion Architecture for Reducing False Positives during Lung Nodule Detection

引用

Journal of Computer and Communications 2021年第4期9卷 1-26页

作者： vamsi krishna vipparla Premith Kumar Chilukuri Giri Babu Kande Emerging Technologies Department Mahindra & Mahindra IT Mumbai Maharashtra India Computer Vision Division Supervue AI Visakhapatnam Andhra Pradesh India Department of Electronics & Communication Engineering Vasireddy Venkatadri Institute of Technology Nambur Andhra Pradesh India

In lung nodules there is a huge variation in structural properties like Shape, Surface Texture. Even the spatial properties vary, where they can be found attached to lung walls, blood vessels in complex non-homogenous lung structures. Moreover, the nodules are of small size at their early stage of development. This poses a serious challenge to develop a Computer aided diagnosis (CAD) system with better false positive reduction. Hence, to reduce the false positives per scan and to deal with the challenges mentioned, this paper proposes a set of three diverse 3D Attention based CNN architectures (3D ACNN) whose predictions on given low dose Volumetric Computed Tomography (CT) scans are fused to achieve more effective and reliable results. Attention mechanism is employed to selectively concentrate/weigh more on nodule specific features and less weight age over other irrelevant features. By using this attention based mechanism in CNN unlike traditional methods there was a significant gain in the classification performance. Contextual dependencies are also taken into account by giving three patches of different sizes surrounding the nodule as input to the ACNN architectures. The system is trained and validated using a publicly available LUNA16 dataset in a 10 fold cross validation approach where a competition performance metric (CPM) score of 0.931 is achieved. The experimental results demonstrate that either a single patch or a single architecture in a one-to-one fashion that is adopted in earlier methods cannot achieve a better performance and signifies the necessity of fusing different multi patched architectures. Though the proposed system is mainly designed for pulmonary nodule detection it can be easily extended to classification tasks of any other 3D medical diagnostic computed tomography images where there is a huge variation and uncertainty in classification.

关键词： 3D-CNN Attention Gated Networks Lung Nodules Medical Imaging X-Ray Computed Tomography

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

Hyperkalemia:Major but still understudied complication among heart transplant recipients

引用

World Journal of Transplantation 2021年第6期11卷 203-211页

作者： Jagmeet Singh Asim Kichloo Navya vipparla Michael Aljadah Michael Albosta Shakeel Jamal Sindhura Ananthaneni Sandesh Parajuli Department of Nephrology Guthrie Robert Packer HospitalSayrePA 18840United States Department of Internal Medicine Central Michigan University College of MedicineSaginawMI 48602United States Department of Internal Medicine Medical College of WisconsinMilwaukeeWI 53226United States Department of Nephrology University of Wisconsin School of Medicine and Public HealthMadisonWI 53706United States

Hyperkalemia is a recognized and potentially life-threatening complication ofheart transplantation. In the complex biosystem created by transplantation,recipients are susceptible to multiple mechanisms for hyperkalemia which arediscussed in detail in this manuscript. Hyperkalemia in heart transplantationcould occur pre-transplant, during the transplant period, or post-transplant. Pretransplantcauses of hyperkalemia include hypothermia, donor heart preservationsolutions, conventional cardioplegia, normokalemic cardioplegia, continuouswarm reperfusion technique, and ex-vivo heart perfusion. Intra-transplant causesof hyperkalemia include anesthetic medications used during the procedure,heparinization, blood transfusions, and a low output state. Finally, post-transplantcauses of hyperkalemia include hemostasis and drug-induced *** has been studied in kidney and liver transplant recipients, butthere is limited data on the incidence, causes, management, and prevention inheart transplant recipients. Hyperkalemia is associated with an increased risk ofhospital mortality and readmission in these patients. This review describes thecurrent literature pertaining to the causes, pathophysiology, and treatment ofhyperkalemia in patients undergoing heart transplantation and focuses primarilyon post-heart transplantation.

关键词： Transplantation Cardiovascular Hyperkalemia Heart transplant Medication Management

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

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

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：