检索结果-内蒙古大学图书馆

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

作者： Sheau-Ling Hsieh Yung-Ching Weng Chi-Huang Chen Kai-Ping Hsu Jeng-Wei Lin Feipei Lai EECS International Graduate Program Institute IT Center National Chiao Tung University Hsinchu Taiwan Taiwan University Taipei Taiwan Department of Electrical Engineering National Taiwan University Taipei Taiwan Computer and Information Networking Center National Taiwan University Taipei Taiwan Department of Information Management Tunghai University Taichung Taiwan Graduate Institute of Biomedical Electronics and Bioinformatics National Taiwan University Taipei Taiwan

The paper addresses Medical Hand Drawing Management System architecture and implementation. In the system, we developed four modules: hand drawing management module; patient medical records query module; hand drawing editing and upload module; hand drawing query module. The system adapts windows-based applications and encompasses web pages by *** hosting mechanism under web services platforms. The hand drawings implemented as files are stored in a FTP server. The file names with associated data, e.g. patient identification, drawing physician, access rights, etc. are reposited in a database. The modules can be conveniently embedded, integrated into any system. Therefore, the system possesses the hand drawing features to support daily medical operations, effectively improve healthcare qualities as well. Moreover, the system includes the printing capability to achieve a complete, computerized medical document process. In summary, the system allows web-based applications to facilitate the graphic processes for healthcare operations.

关键词： Medical services biomedical imaging Printing Conferences Web services Graphics Databases

来源：评论

学校读者我要写书评

暂无评论

Sci—Fri AM: Imaging — 07: Semi-Automated Segmentation of Carotid Artery Lumen and Wall from Three-Dimensional Ultrasound Images Using Level Sets

引用

Medical Physics 2010年第7PART3期37卷 3903-3903页

作者： E Ukwatta J Awad AD Ward A Krasinski A Fenster Imaging Research Laboratories Robarts Research Institute Biomedical Engineering Graduate Program The University of Western Ontario London ON. The Department of Medical Biophysics

Three-dimensional (3D) carotid ultrasound (US) phenotypes are increasingly being investigated for quantifying carotid arthrosclerosis for monitoring and assessment of patients who are at a greater risk of stroke. Vessel wall volume (VWV), which is the 3D measurement of vessel wall thickness plus plaque within the carotid artery, provides a high measurement sensitivity and reproducibility for carotid arthrosclerosis. VWV computation requires lumen and media-adventitia boundaries of the carotid arteries to be outlined. Its use in current clinical practice is limited by the requirement for manual segmentation which is extremely time consuming and operator-dependent. Therefore the objective of this study is to develop and validate a semiautomatic segmentation algorithm for delineating the media-adventitia and lumen boundaries of carotid arteries for patients with asymptomatic carotid stenosis . Due to the presence of plaque, poor definition of the vessel boundaries, intensity heterogeneity, image speckle, and shadowing, the carotid arteries are extremely challenging to segment using image information alone. Therefore, we combine various image cues with domain knowledge of the vessel geometry and some user interaction into the segmentation framework. We adopted an energy minimization approach based on the level sets formulation to segment the vessel wall and lumen using edge-based and region-based objective functions respectively. The proposed segmentation method was evaluated with respect to manually outlined boundaries using several similarity measures on 60 2D US slices from ten patients. The realization of semi-automated methods will accelerate the translation of 3DUS to real-time clinical research and clinical care.

关键词： Ultrasonography Medical imaging Vascular system Medical image segmentation Stroke Speckle

来源：评论

学校读者我要写书评

暂无评论

The nuts and bolts of EMBS student chapters

The nuts and bolts of EMBS student chapters

引用

作者： Linte, Cristian Biomedical Engineering Graduate Program Laboratory for Image-Guided Surgery and Therapy Robarts Research Institute London Canada

The engineering in Medicine and Biology Society (EMBS) student chapters and clubs enable students world wide to engage with the global biomedical community, build relationships that extend beyond college, and better understand societal benefits that result from biomedical pursuits. This article addresses lessons learned from the formation of an IEEE EMBS student chapter at Kansas State University (KSU) and highlights some of the activities supported by this group, which include research to aid persons with disabilities and hands-on efforts to interest young women in science and engineering.

关键词： Students

来源：评论

学校读者我要写书评

暂无评论

Erratum to: Rho Kinase Regulation of Fibroblast Migratory Mechanics in Fibrillar Collagen Matrices

引用

Cellular and Molecular Bioengineering 2010年第2期3卷 195-195页

作者： Zhou, Chengxin Petroll, W. Matthew Biomedical Engineering Graduate Program University of Texas Southwestern Medical Center Dallas USA Department of Ophthalmology University of Texas Southwestern Medical Center Dallas USA

来源：评论

学校读者我要写书评

暂无评论

Reconstruction algorithms for interior and exterior spherical radon transform-based ultrasound imaging

Reconstruction algorithms for interior and exterior spherica...

引用

Medical Imaging 2009: Ultrasonic Imaging and Signal Processing

作者： Vaidyanathan, Ravi Shankar Lewis, Matthew A. Ambartsoumian, Gaik Aktosun, Tuncay Graduate Program in Biomedical Engineering UTSouthwestern Medical Center United States Dept. of Mathematics UT Arlington United States

ISBN: (纸本)9780819475169

This work is concerned with the numerical implementation of a reconstruction algorithm developed to recover a function from its spherical means over spheres centered on a circle. The algorithm is experimentally verified by simulations using numerical phantoms. In the scheme of tomography, acoustic waves are generated by illuminating an object with a short burst of radio-frequency waves. In applications, like breast cancer imaging, which use modalities like photo-acoustic tomography (PAT) that model the acoustic pressures as spherical means, data are measured on the detectors located in a circle surrounding the object. This is then used to reconstruct the absorption density inside the object. In contrast, applications like bore hole tomography and improved Intravascular Ultra Sound (IVUS) imaging for prostate cancer, which use modalities like Radial Reflection Diffraction Tomography (RRDT), a ring of detectors placed exterior to the object, collect the acoustic waves as back-scattered field. This work uses a single algorithm to reconstruct functions from data collected using these two different techniques ? one, by placing the object inside the ring of detectors, and the other, by placing the object exterior to the ring of detectors. The algorithm then draws a comparison between the two reconstructions. The case of bistatic ultrasound imaging, where the elliptical Radon transform is appropriate, is also discussed. © 2009 SPIE.

关键词： Radon

来源：评论

学校读者我要写书评

暂无评论

Sci—Thur PM: YIS — 02: Intraoperative Guidance for Minimally Invasive Abdominal Surgery Using Fused Video and Ultrasound Images: A Phantom Study

引用

Medical Physics 2010年第7PART1期37卷 3884-3884页

作者： CL Cheung C Wedlake J Moore SE Pautler TM Peters Imaging Research Laboratories Robarts Research Institute Biomedical Engineering Graduate Program The University of Western Ontario Division of Urology Department of Surgery and Division of Surgical Oncology Department of Oncology The University of Western Ontario London ON

Many abdominal surgery procedures are now performed minimally invasively. We consider tumour resection, where surgeons use a laparoscopic camera to view the organ surface and a laparoscopic ultrasound (US) probe to visualize the tumour to plan and perform the excision. Conventionally, images are displayed separately and are typically presented in 2D. Therefore, the surgeon has to look back and forth between the images and mentally map the US onto the video to determine the tumour location relative to the surface. Furthermore, the 2D nature of the images decreases depth perception. To address these limitations, we developed an augmented reality visualization that fuses images in a common 3D environment. Instruments were tracked using sensors spatially identified with a magnetic field generator. Through calibration, their image locations were determined in real time. The accuracy of the camera and US calibrations was determined both relative to the tracking system and to each other using target localization. We evaluated the efficacy of the fusion with a phantom experiment. A surgeon performed tumour resections on polyvinyl alcohol-cryogel phantoms under the guidance of the conventional visualization and the fusion system presented in 2D and in 3D. The target localization error was 1.20±0.08mm for the camera, 1.85±0.14mm for the US, and 2.38±0.11mm between the camera and the US. Early results demonstrate a faster resection planning time using fusion compared to the conventional setup while maintaining similar margin accuracy. This study supports the implementation of fusion for guidance of time-sensitive resection tasks performed under conditions of warm ischemia.

关键词： Ultrasonography Cancer Cameras Magnetic field sensors Calibration Anatomy Image sensors Image perception Magnetic fields Fuses

来源：评论

学校读者我要写书评

暂无评论

Progress in BazookaSPECT

Progress in BazookaSPECT

引用

Penetrating Radiation Systems and Applications X

作者： Miller, Brian W. Barber, H. Bradford Furenlid, Lars R. Moore, Stephen K. Barrett, Harrison H. College of Optical Sciences United States Department of Radiology Graduate Interdisciplinary Program In Biomedical Engineering University of Arizona Tucson AZ 85721 United States

ISBN: (纸本)9780819477408

Recent progress on a high-resolution, photon-counting gamma-ray and x-ray imager called BazookaSPECT is presented. BazookaSPECT is an example of a new class of scintillation detectors based on integrating detectors such as CCD(charge-coupled device) or CMOS(complementary metal-oxide semiconductor) sensors. BazookaSPECT is unique in that it makes use of a scintillator in close proximity to a microchannel plate-based image intensifier for up-front optical amplification of scintillation light. We discuss progress made in bringing about compact BazookaSPECT modules and in real-time processing of event data using graphics processing units (GPUs). These advances are being implemented in the design of a high-resolution rodent brain imager called FastSPECT III. A key benefit of up-front optical gain is that any CCD/CMOS sensor can now be utilized for photon counting. We discuss the benefits and feasibility of using CMOS sensors as photon-counting detectors for digital radiography, with application in mammography and computed tomography (CT). We present as an appendix a formal method for comparing various photon-counting integrating detectors using objective statistical criteria. © 2009 SPIE.

关键词： Graphics processing unit

来源：评论

学校读者我要写书评

暂无评论

Development of a portable A-ABR screener using a microprocessor

Development of a portable A-ABR screener using a microproces...

引用

31st Annual International Conference of the IEEE engineering in Medicine and Biology Society: engineering the Future of Biomedicine, EMBC 2009

作者： Noh, Hyung Wook Lee, Tak Hyung Kim, Jong Wook Yang, Dong In Cha, Eun Jong Kim, Deok Won Graduate Program in Biomedical Engineering Yonsei University Seoul Korea Republic of Dept. of Biomedical Engineering College of Medicine Chungbuk National University Chungbuk Korea Republic of Dept. of Medical Engineering College of Medicine Yonsei University Seoul Korea Republic of

ISBN: (纸本)9781424432967

Hearing loss is one of the most common birth defects among infants. Most hearing-impaired children are not diagnosed until one to three years of age, which is too late to treat for normal speech and language development. If hearing impairment is identified and treated in its early stage, a child's speech and language skills could be comparable to his or her normal-hearing peers. Auditory brain-stem response (ABR) is nowadays one of the most reliable diagnostic tools in the early detection of hearing impairment. In this study, we applied the 'Fsp' method to distinguish between normal and impaired hearing. We have developed a battery-operated portable automated auditory brainstem response (A-ABR) system that automatically detects hearing impairment in neonates or infants. We partially validated the accuracy of this system in twenty normal-hearing adults. ©2009 IEEE.

关键词： Brain

来源：评论

学校读者我要写书评

暂无评论

Novel image analysis for trajectory of microtubules gliding on kinesins with Tip detection

引用

Journal of Biomechanical Science and engineering 2009年第3期4卷 404-414页

作者： Sugita, Shukei Sakamoto, Naoya Ohashi, Toshiro Sato, Masaaki Department of Biomedical Engineering Graduate School of Biomedical Engineering Tohoku University 6-6-01 Aramaki-aza-Aoba Aoba Sendai 980-8579 Japan VCAD System Research Program RIKEN 2-1 Hirosawa Wako 351-0198 Japan Department of Bioengineering and Robotics Graduate School of Engineering Tohoku University 6-6-01 Aramaki-aza-Aoba Aoba Sendai 980-8579 Japan Division of Human Mechanical Systems and Design Graduate School of Engineering Hokkaido University N13 W8 Kita Sapporo 060-8628 Japan

Control of the gliding directions of kinesin-driven microtubules (MTs) in vitro has good feasibility for the development of nano-scale transport systems. A requirement for the control of transporters in these systems includes detecting the positions of gliding MTs;however, no studies have reported on the monitoring of the positions of gliding MTs. Here, we suggest an algorithm to detect tip coordinates of gliding MTs by binarization, skeletonization, and filtration of fluorescent images of MTs. The algorithm was first applied to artificially drawn segments with given lengths (10-80 pixels), widths (1-10 pixels), and curvature radii (20-120 pixels) to verify the effect of the sizes of MTs on accuracy of tip coordinates extracted by the algorithm, and error was estimated by referring to the true coordinates. The estimated errors were as small as 2 pixels in the width and were not affected by the length and the curvature radius, indicating that our algorithm is useful to extract the tips of MTs. The algorithm was subsequently applied to images of gliding MTs. Since distances from the trajectories of the MTs to the centers of gravity of the MTs (3.7 ± 2.1 pixels) were significantly larger than those to the tips (1.9 ± 0.5 pixels), the use of the tips as representative points of gliding MTs was verified. A detection method using tips of MTs, as suggested in this study, may be a useful technique for monitoring each MT in nanoscale transport systems.

关键词： Pixels

来源：评论

学校读者我要写书评

暂无评论

Computational simulation of a mems-based microactuator for tissue engineering applications

Computational simulation of a mems-based microactuator for t...

引用

10th ASME Summer Bioengineering Conference, SBC2008

作者： Keyes, Joseph Junkin, Michael Wong, Pak Kin Vande Geest, Jonathan P. Department of Aerospace and Mechanical Engineering United States Graduate Interdisciplinary Program in Biomedical Engineering United States BIO5 Institute for Biocollaborative Research University of Arizona Tucson AZ 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：