检索结果-内蒙古大学图书馆

International Symposium on Soft Computing and Intelligent Systems (SCIS)

作者： Piyamas Suapang Vissuta Puttanakit Surapun Yimman Biomedical Engineering Program Rangsit University Bangkok Thailand Department of Industrial Physics and Medical Instrumentation King Mongkut's University of Technology North Bangkok Bangkok Thailand

The purpose of this study is to develop mammographic density classification, which consists of three major steps. Firstly, the digitization of mammographic images module for images and data archiving. Secondly, a morphological segmentation algorithm is proposed to detect the segment of mammographic masses with salt-and-pepper noise. Thirdly, the percentage of fibroglandular tissue in the total of breast tissue area is calculated and classified with BI-RADS criteria. The experimental results show that the proposed algorithm is more efficient for medical image denoising and segmentation than the usually used template-based segmentation algorithms. The overall accuracy of computerized method classification is 75%. The Kappa coefficient (0.67) indicates the good relationship and Chi-square value (7.69, p=0.053) shows no statistically significant difference. In conclusion, the computerized method based on the morphological segmentation is useful as the radiologist assistant for classifying mammographic density and is suitable for mammographic density classification.

关键词： Image segmentation Image edge detection Noise Breast tissue Breast cancer biomedical imaging

来源：评论

学校读者我要写书评

暂无评论

A Mammography Database and Viewer System

A Mammography Database and Viewer System

引用

biomedical engineering International Conference (BMEiCON)

作者： Piyamas Suapang Methinee Thongyoun Rodjarin Boontawan Sorawat Chivaprecha Biomedical Instrumentation Program Department of Physics Faculty of Sciences Rangsit University Pathumthani Thailand Department of Telecommunications Engineering Engineering Faculty King Mongkut's Institute of Technology Ladkrabang Bangkok Thailand

ISBN: (纸本)9781467348904

A Mammography Database and Viewer System have collected and stored mammography images of Thai women, treated at the Radiology Department of Hospital in Rangsit, Pathumtani, Thailand, constructed a database using the digitized mammography images, and developed an image viewing system to display these digital mammograms. The images are stored with the high resolution Matrox Morphis (MOR/2VD/84*) frame grabber board. The digital mammography database is powered by MySQL and PHP. It also has a web-based search engine (with secure access) so that the information can be made accessible to all medical team members. The image viewing software, DICOM Viewer, is coded in Borland C++ Builder and is intended to help medical professionals view and retrieve large data sets in near real time. This have already digitized 200 cases (one case per patient, twenty to forty images per case). The system also have developed a MySQL-based image database, and a PHP-based web-search engine to retrieve cases that have masses (benign or malignant) or calcifications (benign or malignant). This database has been evaluated by medical professionals and the experimental results obtained so far are very promising (high image qualities, fast access time). The system are currently developing an image content-based retrieval function for the database system in order to provide improved search capability for the medical professionals.

关键词： Databases DICOM Software Breast cancer Educational institutions

来源：评论

学校读者我要写书评

暂无评论

Mammography Archiving and Web Viewer

Mammography Archiving and Web Viewer

引用

SICE Annual Conference

ISBN: (纸本)9781479914951

Mammography Archiving and Web Viewer have collected and stored mammography images of Thai women, treated at the Radiology Department of Hospital in Rangsit, Pathumtani, Thailand, constructed a database using the digitized mammography images, and developed an image viewing system to display these digital mammograms. The images are stored with the high resolution Matrox Morphis (MOR/2VD/84*) frame grabber board. The digital mammography database is powered by MySQL and PHP. It also has a web-based search engine (with secure access) so that the information can be made accessible to all medical team members. The image viewing software, DICOM Viewer, is coded in Borland C++ Builder and is intended to help medical professionals view and retrieve large data sets in near real time. This have already digitized 200 cases (one case per patient, twenty to forty images per case). The system also have developed a MySQL-based image database, and a PHP-based web-search engine to retrieve cases that have masses (benign or malignant) or calcifications (benign or malignant). This database has been evaluated by medical professionals and the experimental results obtained so far are very promising (high image qualities, fast access time). The system are currently developing an image content-based retrieval function for the database system in order to provide improved search capability for the medical professionals.

关键词： Manuals DICOM Electronic mail Breast Cancer Software Manganese

来源：评论

学校读者我要写书评

暂无评论

Low-dose intrapulmonary drug delivery device for studies on next-generation therapeutics in mice

引用

Journal of Controlled Release 2023年第1期359卷 287-301页

作者： Gracioso Martins, Ana Maria Snider, Douglas B. Popowski, Kristen D. Schuchard, Karl G. Tenorio, Matias Akunuri, Sandip Wee, Junghyun Peters, Kara J. Jansson, Anton Shirwaiker, Rohan Cheng, Ke Freytes, Donald O. Cruse, Glenn P. Department of Molecular Biomedical Sciences College of Veterinary Medicine North Carolina State University RaleighNC United States Comparative Medicine and Translational Research Training Program North Carolina State University RaleighNC United States Comparative Medicine Institute North Carolina State University RaleighNC United States Joint Department of Biomedical Engineering College of Engineering North Carolina State University & University of North Carolina-Chapel Hill NC United States Edward P. Fitts Department of Industrial and Systems Engineering North Carolina State University RaleighNC United States Department of Mechanical and Aerospace Engineering North Carolina State University RaleighNC United States Analytical Instrumentation Facility Monteith Research Center North Carolina State University RaleighNC United States

Although nebulizers have been developed for delivery of small molecules in human patients, no tunable device has been purpose-built for targeted delivery of modern large molecule and temperature-sensitive therapeutics to mice. Mice are used most of all species in biomedical research and have the highest number of induced models for human-relevant diseases and transgene models. Regulatory approval of large molecule therapeutics, including antibody therapies and modified RNA highlight the need for quantifiable dose delivery in mice to model human delivery, proof-of-concept studies, efficacy, and dose-response. To this end, we developed and characterized a tunable nebulization system composed of an ultrasonic transducer equipped with a mesh nebulizer fitted with a silicone restrictor plate modification to control the nebulization rate. We have identified the elements of design that influence the most critical factors to targeted delivery to the deep lungs of BALB/c mice. By comparing an in silico model of the mouse lung with experimental data, we were able to optimize and confirm the targeted delivery of over 99% of the initial volume to the deep portions of the mouse lung. The resulting nebulizer system provides targeted lung delivery efficiency far exceeding conventional nebulizers preventing waste of expensive biologics and large molecules during proof-of-concept and pre-clinical experiments involving mice. (Word Count =207). © 2023 Elsevier B.V.

关键词： Molecules

来源：评论

学校读者我要写书评

暂无评论

A multiresolution image registration procedure using spline pyramids

A multiresolution image registration procedure using spline ...

引用

Mathematical Imaging: Wavelet Applications in Signal and Image Processing 1993

作者： Unser, Michael Aldroubi, Akram Gerfen, Charles R. Biomedical Engineering and Instrumentation Program Bldg 13 Room 3W13 National Center for Research Resources National Institutes of Health BethesdaMD20892 United States Laboratory of Cell Biology Bldg 36 Room 2D-10 National Institute of Mental Health National Institutes of Health BethesdaMD20892 United States

We present an iterative multiresolution algorithm for the translational and rotational alignment of digital images. An image is represented by an interpolating spline. Coarser versions of this continuous image model are obtained by using spline approximations at various scales (polynomial spline pyramid). We use a coarse-to-fine updating strategy to compute the alignment parameters iteratively, using a variation of the Levenberg-Marquardt non-linear least-squares optimization method. This approach yields very precise image registration with subpixel accuracy. It is also much faster and more robust than a comparable single-scale implementation, because the resolution of the underlying image model is adapted to the step size of the algorithm. © 1993 SPIE. All rights reserved.

关键词： Image registration

来源：评论

学校读者我要写书评

暂无评论

EELS Imaging of Biological Materials

引用

MRS Online Proceedings Library 1994年第1期332卷 351-359页

作者： R. D. Leapman S. Sun J. A. Hunt S. B. Andrews Biomedical Engineering and Instrumentation Program National Center for Research Resources National Institutes of Health Bethesda USA Gatan R & D Pleasanton USA Laboratory of Neurobiology National Institute for Neurological Diseases and Stroke National Institutes of Health Bethesda USA

Parallel-detection electron energy loss spectroscopy (EELS) in the scanning transmission electron microscope provides a very sensitive means of detecting specific elements in biological systems. By analyzing EELS spectrum-image data recorded from rapidly-frozen and cryosectioned tissue it is possible to map quantitatively the distribution of the biologically important element, calcium, which is typically present at concentrations of only a few parts per million in cellular structures some tens of nanometers in diameter. A significant improvement (factor of four) in calcium detectability has been demonstrated for EELS compared with energy-dispersive x-ray spectroscopy. The spectrum-imaging technique has also been applied to map water distributions in hydrated biological specimens by utilizing the valence electron excitations.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Pathological Consequences of Altered Hemodynamics During Heart Valve Development

引用

Microscopy and Microanalysis 2016年第S3期22卷 1062-1063页

作者： Vinal Menon Lorain Junor John Eberth Marwa Belhaj Jay Potts Department of Cell Biology and Anatomy School of Medicine University of South Carolina Columbia USA Instrumentation Resource Facility School of Medicine University of South Carolina Columbia USA Biomedical Engineering Program College of Engineering and Computing University of South Carolina Columbia USA

来源：评论

学校读者我要写书评

暂无评论

MR diffusion tensor imaging of ischemic brain in vivo

MR diffusion tensor imaging of ischemic brain in vivo

引用

Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： P.J. Basser J. Mattiello C. Pierpaoli D. LeBihan Biomedical Engineering and Instrumentation Program NCRR Bethesda MD USA Neuroimaging Branch NINDS Bethesda MD USA Diagnostic Radiology Department Warren Grant Magnuson Clinical Center Bethesda MD USA

Diffusion tensor imaging (DTI) provides intravoxel microstructural and microdynamic information about tissues that reflects their physiological state. The authors use DTI to assess changes in water mobility in an in vivo model of cerebral ischemia in cats. They use four estimated scalar quantities: the 3 principal diffusivities (/spl lambda//sub 1/, /spl lambda//sub 2/, and /spl lambda//sub 3/) and the T/sub 2/-weighted NMR signal (A(0)), as features with which to segment both normal and pathological tissues. While the authors can use these parameters to discriminate between normal and ischemic white and gray matter in cats, they are evaluating their use to distinguish between reversibly and irreversibly damaged tissues during stroke and other white matter diseases.< >

关键词： Diffusion tensor imaging In vivo Cats Ischemic pain Nuclear magnetic resonance Pathology Diseases

来源：评论

学校读者我要写书评

暂无评论

Light Monitoring in Photo-Dynamic Therapy

Light Monitoring in Photo-Dynamic Therapy

引用

IEEE Case Studies in Medical Instrument Design

作者： W.S. Friauf P.E. Smith A. Russo T.F. DeLaney H.I. Pass J.W. Cole C.C. Gibson W.F. Sindelar G. Thomas Radiation Oncology Branch National Cancer Institute NIH Biomedical Engineering and Instrumentation Program National Center for Research Resources NIH USA Radiation Oncology Branch National Cancer Institute USA Surgery Branch National Cancer Institute National Institutes of Health USA

来源：评论

学校读者我要写书评

暂无评论

Letter to the editor: Letter to the editor

引用

Cancer Investigation 1992年第2期10卷 187-188页

作者： Miller, Donald L. Lutz, Robert J. Diagnostic Radiology Departmentm Warren Grant Magnuson Clinical Center Bethesda MD 20892 United States Biomedical Engineering and Instrumentation Program National Center for Research Resources National Institutes of Health Bethesda MD 20892 United States

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：