检索结果-内蒙古大学图书馆

您好，读者！请登录

内蒙古大学图书馆

首页
概况
党建
资源
服务
科研支持
- 论文收录引用证明
- 科技查新
知识产权
档案馆
帮助

咨询与建议

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

您的常用邮箱：*

您的手机号码：*

问题描述：

当前已输入0个字，您还可以输入200个字

全部搜索
期刊论文
图书
学位论文
标准
纸本馆藏
外文资源发现
数据库导航
超星发现

高级检索

时间限定

出版年份：

文献类型

图书期刊文献学位论文多媒体

馆藏选择

电子馆藏纸本馆藏

核心期刊

全部期刊 SCI 收录期刊 SSCI 收录期刊 EI 收录期刊 CSCD 收录期刊 CSSCI 收录期刊

语言

中文英文

文献类型

期刊文献图书学位论文标准纸本馆藏

帮助

文字说明：

T=题名（书名、题名），A=作者（责任者），K=主题词，P=出版物名称，PU=出版社名称，O=机构（作者单位、学位授予单位、专利申请人），L=中图分类号，C=学科分类号，U=全部字段，Y=年（出版发行年、学位年度、标准发布年）

检索规则说明：

AND代表“并且”；OR代表“或者”；NOT代表“不包含”；(注意必须大写,运算符两边需空一格)

检索范例：

范例一：(K=图书馆学 OR K=情报学) AND A=范并思 AND Y=1982-2016
范例二：P=计算机应用与软件 AND (U=C++ OR U=Basic) NOT K=Visual AND Y=2011-2016

分类表

所选分类

>> <<

限定检索结果

文献类型

307 篇 会议
24 篇 期刊文献

馆藏范围

331 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

232 篇 工学
- 152 篇 生物医学工程（可授...
- 94 篇 计算机科学与技术...
- 46 篇 电气工程
- 42 篇 软件工程
- 36 篇 电子科学与技术（可...
- 27 篇 仪器科学与技术
- 21 篇 光学工程
- 19 篇 材料科学与工程（可...
- 19 篇 生物工程
- 14 篇 信息与通信工程
- 7 篇 机械工程
- 7 篇 控制科学与工程
- 3 篇 测绘科学与技术
- 2 篇 土木工程
- 2 篇 化学工程与技术
209 篇 理学
- 126 篇 物理学
- 88 篇 生物学
- 46 篇 数学
- 10 篇 统计学（可授理学、...
- 4 篇 化学
- 1 篇 地球物理学
- 1 篇 系统科学
204 篇 医学
- 144 篇 特种医学
- 75 篇 临床医学
- 33 篇 基础医学(可授医学...
- 32 篇 药学(可授医学、理...
- 3 篇 公共卫生与预防医...
3 篇 教育学
- 2 篇 教育学
- 1 篇 体育学
3 篇 管理学
- 2 篇 管理科学与工程(可...
1 篇 艺术学

主题

38 篇 medical imaging
23 篇 image segmentati...
21 篇 magnetic resonan...
18 篇 physiology
16 篇 image processing
13 篇 computed tomogra...
13 篇 image analysis
12 篇 segmentation
12 篇 multidimensional...
12 篇 heart
9 篇 image reconstruc...
8 篇 angiography
8 篇 image registrati...
7 篇 3d image process...
6 篇 brain
6 篇 lung
6 篇 data modeling
6 篇 visualization
6 篇 tomography
6 篇 biomedical imagi...

机构

7 篇 univ tokushima d...
5 篇 univ iowa dept e...
5 篇 univ iowa dept e...
5 篇 univ memphis dep...
3 篇 univ iowa dept r...
3 篇 natl canc ctr ho...
3 篇 univ iowa dept b...
3 篇 natl canc ctr
3 篇 purdue univ sch ...
3 篇 univ iowa dept i...
2 篇 univ of pennsylv...
2 篇 graz univ magnet...
2 篇 univ birmingham ...
2 篇 johns hopkins un...
2 篇 inria sophia-ant...
2 篇 heidelberg univ ...
2 篇 nagoya univ grad...
2 篇 suny upstate med...
2 篇 univ colorado de...
2 篇 univ western ont...

作者

10 篇 hoffman ea
8 篇 sonka m
6 篇 ritman erik l.
5 篇 preza chrysanthe
5 篇 kawata y
5 篇 niki n
5 篇 sonka milan
5 篇 mori k
4 篇 mcveigh elliot r...
4 篇 reinhardt jm
4 篇 moriyama noriyuk...
4 篇 udupa jayaram k.
4 篇 eguchi kenji
4 篇 ohmatsu hironobu
4 篇 lei tianhu
4 篇 moriyama n
4 篇 niki noboru
4 篇 kawata yoshiki
3 篇 stantz km
3 篇 moriyama n.

语言

329 篇 英文
1 篇 其他
1 篇 中文

检索条件"任意字段=Conference on Physiology and Function from Multidimensional Images"

共 331 条记录，以下是281-290 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

Simulation and analysis of dynamic brain PET images

Simulation and analysis of dynamic brain PET images

引用

Medical Imaging 1996: physiology and function from multidimensional images

作者： Yap, Jeffrey T. Chen, Chin-Tu Cooper, Malcolm Univ. of Chicago Chicago IL USA

ISBN: (纸本)0819420840

We have developed a software package which combines the simulation and analysis of dynamic brain images acquired by positron emission tomography. In the spatial domain, standard digitized phantoms are used to create spatial maps which represent various structures in the brain. In the temporal domain, kinetic models are used to simulate the dynamics at the pixel level for each time-activity curve. Physical characteristics such as spatial resolution and noise are then modeled on individual image frames. This software has been used in the case of [18F]fluorodeoxyglucose studies to produce realistic simulations which were further analyzed to confirm previous findings based on real clinical data.

关键词： Medical imaging

来源：评论

学校读者我要写书评

暂无评论

Clustering multidimensional MR images to detect metabolic changes in different tissue classes

Clustering multidimensional MR images to detect metabolic ch...

引用

Medical Imaging 1996: physiology and function from multidimensional images

作者： Bernarding, Johannes Braun, Juergen Villringer, Kersten Haarbeck, K. Hoehn-Berlage, Mathias Haupt, G. Wolf, K.J. Tolxdorff, Thomas Freie Univ. Berlin Berlin Ger

ISBN: (纸本)0819420840

A tissue database was established by using multidimensional clusters of exact longitudinal (T 1) and transversal (T2) relaxation times and spin density, allowing the automatic segmentation and characterization of healthy and pathologic tissue. All parameters were simultaneously acquired employing a modified Multi-Echo pulse sequence. Initial clinical results showed a good differentiation between normal brain tissue and pathologic tissue like edema and meningioma. Inhomogeneous tumors such as high-grade glioblastoma were difficult to characterize automatically. The implementation of a diffusion-weighted modified Tanner-Stejskal pulse sequence allows the acquisition of the Apparent Diffusion Constant (ADC), which has been incorporated for the first time into a multidimensional information set as a new tissue-characterizing parameter. This parameter is sensitive to changes in the mobility of water in and between different cell compartments resulting from metabolic cell disorders like ischemic or edematous processes. To reproduce the known results of animal experiments, where as early as 30 min after an ischemic event the measurement of the ADC led to a diagnosis, diffusion-weighted imaging had to be implemented on a standard clinical scanner. The correction of unavoidable motion artifacts, which occur when applying diffusion- weighted spin echo sequences on standard clinical scanners, require the implementation of a special sequence using the navigator echo method followed by a correction algorithm of the raw data in Fourier space. Initial results showed a significant improvement in the differentiation of healthy and pathologic tissue classes.

关键词： Magnetic resonance imaging

来源：评论

学校读者我要写书评

暂无评论

Toward fully automated analysis of tagged and nontagged MR cardiac images

Toward fully automated analysis of tagged and nontagged MR c...

引用

Medical Imaging 1996: physiology and function from multidimensional images

作者： Kumar, Senthil Cheng, Tai W. Adair, Jonathan Sellhorn, Agusto Goldgof, Dmitry B. Tadikonda, Satish K. Freeman, Dominique Cognex Corp. Tampa FL USA

ISBN: (纸本)0819420840

This paper presents three approaches to the problem of obtaining the left ventricular boundaries from cardiac MR data. The first presents a new model based approach for the detection of the endocardium from 4D MR cardiac images. The method proposed here links shape modeling and edge detection to provide a compact representation of the endocardium. A spatio-temporal edge detector has been designed to incorporate the temporal information available in 4D images. This edge detector has a stronger response to dynamic edges than static edges. Since the ventricle is a dynamic shape, boundaries detected using this edge detector are far better than those detected using a spatial edge detector. The output of our edge detector is iteratively corrected using a spherical harmonic model. This model based approach allows us to overcome the problems of noise and missing boundary information. Our system is fully automated and its output consists of the extracted boundary in each slice and a 3D surface model for each time instant. Quantitative evaluation is done by comparing the results of the algorithm with manually extracted ground truth for 12 data sets. The second approach uses filters applied across the detected tag lines to remove the tags from SPAMM-tagged MR data to allow existing boundary detection algorithms to function with minimal changes. The third approach uses the Fuzzy c-Spherical Shell algorithm directly on tagged (and untagged) data to determine the approximate LV center.

关键词： Magnetic resonance imaging

来源：评论

学校读者我要写书评

暂无评论

Analysis of ultrasound pulse-echo images for characterization of muscle disease

Analysis of ultrasound pulse-echo images for characterizatio...

引用

Medical Imaging 1996: physiology and function from multidimensional images

作者： Leeman, Sidney Heckmatt, John Z. King's Coll. London London UK

ISBN: (纸本)0819420840

This study aims to extract quantifiable indices characterizing ultrasound propagation and scattering in skeletal muscle, from data acquired using a real-time linear array scanner in a paediatric muscle clinic, in order to establish early diagnosis of Duchenne muscular dystrophy in young children, as well as to chart the progressive severity of the disease. Approximately 40 patients with gait disorders, aged between 1 and 11 years, were scanned with a real-time linear array ultrasound scanner, at 5 MHz. A control group consisted of approximately 50 boys, in the same age range, with no evidence or history of muscle disease. Results show that ultrasound quantitative methods can provide a tight clustering of normal data, and also provide a basis for charting the degree of change in diseased muscle. The most significant (quantitative) parameters derive from the frequency of the attenuation and the muscle echogenicity. The approach provides a discrimination method that is more sensitive than visual assessment of the corresponding image by even an experienced observer. There are also indications that the need for traumatic muscle biopsy may be obviated in some cases.

关键词： Ultrasonic applications

来源：评论

学校读者我要写书评

暂无评论

Motion analysis of videostroboscopic images of the larynx

Motion analysis of videostroboscopic images of the larynx

引用

Medical Imaging 1996: physiology and function from multidimensional images

作者： Saadah, A.K. Galatsanos, Nikolas P. Bless, D. Illinois Inst. of Technology Chicago IL USA

ISBN: (纸本)0819420840

Videostroboscopy is an examination method during which a video-recording of the moving vocal folds is obtained. This examination, is very important because it yields a permanent record of the moving vocal folds and it allows the diagnosis of abnormalities which contribute to voice disorders. In this paper we use image processing algorithms in order to find and quantify the motion of the vocal folds during phonation. In order to achieve this, a new approach for tracking of the vocal folds is presented. More specifically, an active contours (snakes) based procedure is developed to automatically, with minimum user intervention, delineate the contour of the vocal folds in each frame of the videostroboscopic image sequence. After this delineation, an elastic registration algorithm is used to find the motion of the vocal folds between adjacent frames of a video sequence. For this purpose, a new simulated annealing based algorithm is used to match elastically the vocal fold contours from frame-to-frame. After the motion of each point of the vocal folds has been estimated, an affine model is used to parameterize the motion from frame-to-frame. Least-squares estimation is used to fit this model. The parameters of such a model (rotation, translation, and deformation along two principle axes) will hopefully help quantify and discriminate videostroboscopic recordings based on the motion present.

关键词： Medical imaging

来源：评论

学校读者我要写书评

暂无评论

Correction for partial volume effect in PET blood flow images

Correction for partial volume effect in PET blood flow image...

引用

Medical Imaging 1996: physiology and function from multidimensional images

作者： Gage, Howard D. Fahey, Fredrick H. Santago II, Peter Harkness, Beth A. Keyes, J.W. Bowman Gray Sch. of Medicine/Wake Forest Univ. Winston-Salem NC USA

ISBN: (纸本)0819420840

Current positron emission tomography techniques for the measurement of cerebral blood flow assume that voxels represent pure material regions. In this work, a method is presented which utilizes anatomical information from a high resolution modality such as MRI in conjunction with a multicompartment extension of the Kety model to obtain intravoxel, tissue specific blood flow values. In order to evaluate the proposed method, noisy time activity curves (TACs) were simulated representing different combinations of gray matter, white matter and CSF, and ratios of gray to white matter blood flow. In all experiments it was assumed that registered MR data supplied the number of materials and the fraction of each present. For each TAC, three experiments were run. In the first it was assumed that the fraction of each material determined by MRI was correct, and, in the second two, that the value was either too high or too low. Using the tree annealing method, material flows were determined which gave the best fit of the model to the simulated TAC data. The results indicate that the accuracy of the method is approximately linearly related to the error in material fraction estimated for a voxel.

关键词： Positron emission tomography

来源：评论

学校读者我要写书评

暂无评论

Three-dimensional x-ray imaging of the anatomy and function of the lungs and pulmonary arteries in dogs following single lung transplant

Three-dimensional x-ray imaging of the anatomy and function ...

引用

Medical Imaging 1996: physiology and function from multidimensional images

作者： Wu, Qing-Hua M.D. McGregor, Christopher G.M.D. Wu, Xue-Si M.D. Rinaldi, Mauro M.D. Nilsson, Folke N.M.D. Tazelaar, Henry D.M.D. Ritman, Erik L.M.D. Beijing Anzhen Hospital Beijing China

ISBN: (纸本)0819420840

It was the goal of this study to see if relatively noninvasive CT studies could provide a quantitative index of acute lung rejection in single lung transplantation. Using volume scanning fast CT, the change in cross-sectional area of the major pulmonary arteries from systole to diastole, regional lung perfusion and ventilation was measured in 12 dogs with left lung allotransplantation before and during rejection and four dogs with left lung autotransplantation. All dogs were anesthetized and scanned in a fast computed tomography scanner (dynamic spatial reconstructor - DSR) during several ventilatory cycles and again during injection of contrast medium into the right atrium. There was significant reduction of regional air content, ventilation, perfusion and pulmonary artery compliance during rejection of the transplanted lung. The severity of these changes related linearly with the histological indices of rejection. It is concluded that minimally invasive dynamic CT imaging of transplanted lung can be used to detect acute rejection and its severity.

关键词： Medical imaging

来源：评论

学校读者我要写书评

暂无评论

Shape-based image compression

Shape-based image compression

引用

conference on Image Display

作者： Grevera, GJ Udupa, JK UNIV PENN DEPT RADIOLMED IMAGE PROC GRPPHILADELPHIAPA 19104

ISBN: (纸本)0819420824

As medical image data are acquired at higher spatial, gray-scale, and temporal resolution, with increasing image dimensionality and vectorial components per image element, the need to be able to compress them becomes increasingly important, especially for the practical utilization of PACS. Further, a compression method that allows an efficient in-memory representation would be very useful for those processing situations in which the non-compressed data are beyond RAM resources. Consider an n-dimensional (nD) scene intensity function (m- valued) as a digital surface in an (n plus m)D space as described below. The approach leads to a spectrum of lossless and lossy compression methods. For a 2D, scalar valued (m equals 1) scene S, for example, the 3D digital surface representing S is simply the graph of the scene intensity function. The first two coordinates of points on the surface represent the coordinates of a pixel in S and the third coordinate represents the pixel's intensity. In this example, if m equals 2, then the third and the fourth coordinates of the points in the 4D surface represent the two pixel values. The digital surfaces obtained from scenes via this process (referred to as lifting as described below) have certain distinct topological properties not shared by general digital surfaces (for example, they do not enclose holes). These properties allow us to encode them elegantly. For example, the entire surface (for any finite n greater than 0, m greater than 0) can be represented by a Hamiltonian path of surface elements in the graph representing the surface. This path is chain-encoded facilitated by the small number of possible configurations and orientations of adjacent surface elements. Our (very) preliminary results indicate lossless compression ratios of 4.6:1 for CT slices and 1.7:1 for CR scalar-valued scenes (n equals 2, m equals 1) representing 2D scenes. Our preliminary implementation uses simple chain codes that do not exploit the repetitive pa

关键词： data compression shape-based techniques multidimensional images digital surfaces

来源：评论

学校读者我要写书评

暂无评论

A scatter correction based on the deconvolution method in SPECT

A scatter correction based on the deconvolution method in SP...

引用

International conference on Signal Processing Proceedings (ICSP)

作者： J. Yang P. Karjalainen J. Kuikka L. Patomaki Department of Clinical Physiology and Nuclear Medicine Kuopio University Hospital Kuopio Finland Department of Applied Physics University of Kuopio Kuopio Finland

A scatter correction using a two-dimensional (2D) deconvolution method has been developed which compensates for Compton scattering in a triple-head gamma camera images. It assumes that the scatter distribution in any projection can be estimated from sinogram activity distribution using a position-invariant scatter kernel. The scatter distribution function has been derived from the measurements of a point source in a plastic phantom. The scatter correction technique is based on filtering by 2D convolution in the spatial domain. The spatial filter was designed to implement a 2D IIR filter. The quality of the compensation is also evaluated by comparing the ratio of the average counts/pixel with and without scatter correction in clinical brain blood flow studies.

关键词： Scattering Deconvolution IIR filters Cameras Kernel Distribution functions Plastics Imaging phantoms Filtering Convolution

来源：评论

学校读者我要写书评

暂无评论

Medical Imaging 1995: physiology and function from multidimensional images

Medical Imaging 1995: Physiology and Function from Multidime...

引用

Medical Imaging 1995: physiology and function from multidimensional images

The proceedings contain 47 papers. The topics discussed include: estimation of regional pulmonary perfusion parameters from microfocal angiograms;regional pulmonary blood flow measurement in humans with electron-beam computed tomography;perfusion deficit versus anatomic visualization in detection of pulmonary emboli via electron-beam CT: validation in swine;detection of pulmonary perfusion patterns in patients with pulmonary embolism by ultrafast ct;hemodynamic interpretation of pulmonary arterial tree images;quantification of blood flow using phase contrast magnetic resonance imaging;and splanchnic microcirculation-evaluation with whole body computed tomography.

关键词：

来源：评论

学校读者我要写书评

暂无评论

没有更多数据了...

全选清除本页清除全部题录导出标记到“检索档案”

共34页 << < 25 26 27 28 29 30 31 32 33 34 > >>

检索报告对象比较合并检索0

隐藏清空

合并搜索

回到顶部

执行限定条件

内容：

评分：

请选择保存的检索档案：

请选择收藏分类：

订阅名称：

通借通还

温馨提示：

图书名称：

借书校区：

取书校区：

手机号码：

邮箱地址：

一卡通帐号：

电话和邮箱必须正确填写，我们会与您联系确认。

联系人：

所在院系：

联系邮箱：

联系电话：

内蒙古自治区呼和浩特市赛罕区大学西街235号邮编: 010021

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：