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

104 篇 会议
4 篇 期刊文献

馆藏范围

108 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

80 篇 理学
- 75 篇 物理学
- 14 篇 生物学
- 5 篇 数学
- 3 篇 化学
- 3 篇 统计学（可授理学、...
64 篇 工学
- 40 篇 生物医学工程（可授...
- 18 篇 计算机科学与技术...
- 16 篇 光学工程
- 9 篇 软件工程
- 9 篇 生物工程
- 8 篇 材料科学与工程（可...
- 7 篇 电气工程
- 3 篇 仪器科学与技术
- 2 篇 电子科学与技术（可...
- 2 篇 安全科学与工程
- 1 篇 信息与通信工程
- 1 篇 控制科学与工程
- 1 篇 化学工程与技术
51 篇 医学
- 41 篇 特种医学
- 16 篇 临床医学
- 5 篇 基础医学(可授医学...
- 4 篇 药学(可授医学、理...

主题

24 篇 molecular imagin...
6 篇 fluorescence mol...
5 篇 magnetic resonan...
5 篇 nanoparticles
4 篇 fluorescence
3 篇 diffusion tensor...
3 篇 image segmentati...
3 篇 iron
3 篇 breast cancer
3 篇 mri
3 篇 biomedical imagi...
3 篇 inverse problem
3 篇 image registrati...
2 篇 structural equat...
2 篇 imaging
2 篇 reconstruction
2 篇 fluorescence mol...
2 篇 self-assembly
2 篇 sensitivity
2 篇 oxides

机构

4 篇 univ chinese aca...
2 篇 dartmouth coll t...
2 篇 cyberdyne inc ro...
2 篇 capital med univ...
2 篇 penn state univ ...
2 篇 chinese acad sci...
2 篇 chinese acad sci...
2 篇 chinese acad sci...
2 篇 univ michigan de...
2 篇 univ zurich inst...
2 篇 capital med univ...
1 篇 florida state un...
1 篇 ucl ctr med imag...
1 篇 department of bi...
1 篇 chinese acad sci...
1 篇 departments of b...
1 篇 photon science d...
1 篇 computer algorit...
1 篇 chinese peoples ...
1 篇 chinese acad sci...

作者

8 篇 tian jie
3 篇 he huiguang
3 篇 qin chenghu
3 篇 xue zhenwen
3 篇 weaver john b.
3 篇 paulsen keith d.
3 篇 gimi barjor
2 篇 golnabi amir h.
2 篇 tahmassebi amirh...
2 篇 pogue brian w.
2 篇 molthen robert c...
2 篇 liu yue
2 篇 meaney paul m.
2 篇 agrawal sumit
2 篇 rudin markus
2 篇 huang jiwei
2 篇 yang xinyi
2 篇 peng yun
2 篇 du yang
2 篇 ren wuwei

语言

107 篇 英文
1 篇 其他

检索条件"任意字段=SPIE Biomedical Applications in Molecular, Structural and Functional Imaging Conference"

共 108 条记录，以下是11-20 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：

FEM-based simulation of a fluorescence tomography experiment using anatomical MR images

FEM-based simulation of a fluorescence tomography experiment...

引用

spie biomedical applications in molecular, structural and functional imaging conference

作者： Ren, Wuwei Elmer, Andreas Augath, Mark-Aurel Rudin, Markus Univ Zurich Inst Biomed Engn Zurich Switzerland ETH Zurich Switzerland

ISBN: (纸本)9781510600232

A hybrid system combining fluorescence molecular tomography (FMT) and magnetic resonance imaging (MRI) is attractive for preclinical imaging as it allows fusion of molecular infounation derived from FMT and anatomical reference data derived from MRI. We have previously developed such a system and demonstrated its perfounance in biological applications. For reconstruction slab geometry with homogeneous optical parameters was assumed, which led to undesirable artifacts. In order to exploit the power of the hybrid system, the use of MRI derived anatomical infounation, as a constraint for FMT reconstruction, appears logical. Heterogeneity of tissues and irregular surface derived from MRI can be accounted for by generating a mesh using the finite element method (FEM), and attributing optical parameters to individual mesh points. We have established a forward simulation tool based on TOAST++ to mimic an FMT experiment. MRI images were recorded on a 9.4T MR scanner using a T1-weighted pulse sequence. The voxelized dataset was processed by iso2mesh to yield a 3D-mesh. Four steps of FMT simulation were included: 1) Assignment of optical properties, 2) Specification of boundary conditions and generation of 3) excitation and 4) emission maps. FEM-derived results were compared with those obtained using the analytical solution of Green's function and with experimental data with a single fluorescent inclusion in a silicon phantom. Once, the forward modeling method is properly validated it will be used as a central element of a reconstruction algorithm for analyzing data derived from a hybrid FMT/MRI setup.

关键词： fluorescence molecular tomography magnetic resonance imaging hybrid system finite element method forward modeling

来源：评论

学校读者我要写书评

暂无评论

Low-intensity calibration source for optical imaging systems

Low-intensity calibration source for optical imaging systems

引用

spie biomedical applications in molecular, structural, and functional imaging conference

作者： Holdsworth, David W. Univ Western Ontario Robarts Res Inst Bone & Joint Inst Schulich Sch Med & DentDept Med Biophys London ON N6A 5K8 Canada Univ Western Ontario Robarts Res Inst Bone & Joint Inst Schulich Sch Med & DentDept Surg London ON N6A 5K8 Canada

ISBN: (纸本)9781510607194;9781510607200

Laboratory optical imaging systems for fluorescence and bioluminescence imaging have become widely available for research applications. These systems use an ultra-sensitive CCD camera to produce quantitative measurements of very low light intensity, detecting signals from small-animal models labeled with optical fluorophores or luminescent emitters. Commercially available systems typically provide quantitative measurements of light output, in units of radiance (photons s(-1) cm(-2) SR-1) or intensity (photons s(-1) cm(-2)). One limitation to current systems is that there is often no provision for routine quality assurance and performance evaluation. We describe such a quality assurance system, based on an LED-illuminated thin-film transistor (TFT)liquid-crystal display module. The light intensity is controlled by pulse-width modulation of the backlight, producing radiance values ranging from 1.8 x 10(6) photons s(-1) cm(-2) SR-1 to 4.2 x 10(13) photons s(-1) cm(-2) SR-1. The lowest light intensity values are produced by very short backlight pulses (i.e. approximately 10 mu s), repeated every 300 s. This very low duty cycle is appropriate for laboratory optical imaging systems, which typically operate with long-duration exposures (up to 5 minutes). The low-intensity light source provides a stable, traceable radiance standard that can be used for routine quality assurance of laboratory optical imaging systems.

关键词： molecular imaging whole-body optical imaging optical calibration quality assurance

来源：评论

学校读者我要写书评

暂无评论

A novel method for eliminating autofluorescence of small animals in fluorescence molecular imaging

A novel method for eliminating autofluorescence of small ani...

引用

conference on Medical imaging 2011 - biomedical applications in molecular, structural, and functional imaging

作者： Xue, Zhenwen Tian, Jie Han, Dong Ma, Xibo Chinese Acad Sci Inst Automat Key Lab Complex Syst & Intelligence Sci Med Image Proc Grp Beijing 100190 Peoples R China

ISBN: (纸本)9780819485076

As a newly emerged optical imaging method, fluorescence molecular imaging technique has been receiving increasing attention for its ability of non-invasive visualization of the cellular and molecular activities. However, as a kind of background noise, autofluorescence is a major disturbing factor in fluorescence molecular imaging. In this paper, we proposed a novel method to eliminate autofluorescence of small animals. The method is based on the fact that most autofluorescent signal has a broad excitation and emission spectrum, whereas specific fluorescent probe has a narrow one. First, two fluorescent images are obtained at two different excitation wavelengths. Then we divide the two obtained fluorescent images into blocks with the size of 8x8 pixel. The two blocks from the same position of the two different images respectively constitute a block pair. The ratio of one block's summation of total pixel value to that of ther other block belonging to the same block pair is calculated. After that, we classify all block pairs into fluorescent and non-fluorescent ones by ratio. The former are considered to be actual fluorescent regions. In next step, we adopt an adaptive cluster analysis method to classify all fluorescent block pairs into multiple interest regions. A general centroid algorithm is then applied to locate the center of each interest regions. We recover the fluorescent interest regions using flood filling algorithm. Finally, we choose a GFP-transfected tumor mouse model and a GFP-transplanted mouse skin model to validate our algorithm.

关键词： Autofluorescence eliminating fluorescence molecular imaging GFP mouse model

来源：评论

学校读者我要写书评

暂无评论

Sensitivity improvement of a molecular imaging technique based on magnetic nanoparticles

Sensitivity improvement of a molecular imaging technique bas...

引用

conference on Medical imaging 2011 - biomedical applications in molecular, structural, and functional imaging

作者： Ishihara, Yasutoshi Kuwabara, Tsuyoshi Wadamori, Naoki Meiji Univ Sch Sci & Technol Tama Ku 1-1-1 Higashimita Kanagawa 2148571 Japan Nagaoka Univ Technol Grad Sch Sci & Technol Niigata 9402188 Japan Nagaoka Univ Technol Dept Elect Engn Niigata 9402188 Japan

ISBN: (纸本)9780819485076

Magnetic particle imaging (MPI) using the nonlinear interaction between internally administered magnetic nanoparticles (MNPs) and electromagnetic waves irradiated from outside of the body has attracted attention for the early diagnosis of diseases such as cancer. In MPI, the local magnetic field distribution is scanned, and the magnetization signal from MNPs inside an object region is detected. However, the signal sensitivity and image resolution are degraded by interference from the magnetization signal generated by MNPs that exist outside of the desired region, owing to nonlinear responses. Earlier, we proposed an image reconstruction method for suppressing the interference component while emphasizing the signal component using the property of the higher harmonic components generated by the MNPs. However, edge areas in the reconstructed image were emphasized excessively owing to the high-pass-filter effect of this method. Here, we propose a new method based on correlation information between the observed signal and a system function. We performed a numerical analysis and found that, although the image was somewhat blurred, the detection sensitivity can clearly be improved without the inverse-matrix operation used in conventional image reconstruction.

关键词： MPI magnetic particle imaging molecular imaging image reconstruction sensitivity image resolution

来源：评论

学校读者我要写书评

暂无评论

Interaction of multiple networks modulated by the working memory training based on real-time fMRI

Interaction of multiple networks modulated by the working me...

引用

conference on Medical imaging - biomedical applications in molecular, structural, and functional imaging

作者： Shen, Jiahui Zhang, Gaoyan Zhu, Chaozhe Yao, Li Zhao, Xiaojie Beijing Normal Univ Coll Informat Sci & Technol Beijing 100875 Peoples R China Beijing Normal Univ State Key Lab Cognit Neurosci & Learning Beijing 100875 Peoples R China

ISBN: (纸本)9781628415070

Neuroimaging studies of working memory training have identified the alteration of brain activity as well as the regional interactions within the functional networks such as central executive network (CEN) and default mode network (DMN). However, how the interaction within and between these multiple networks is modulated by the training remains unclear. In this paper, we examined the interaction of three training-induced brain networks during working memory training based on real-time functional magnetic resonance imaging (rtfMRI). Thirty subjects assigned to the experimental and control group respectively participated in two times training separated by seven days. Three networks including silence network (SN), CEN and DMN were identified by the training data with the calculated function connections within each network. structural equation modeling (SEM) approach was used to construct the directional connectivity patterns. The results showed that the causal influences from the percent signal changes of target ROI to the SN were positively changed in both two groups, as well as the causal influence from the SN to CEN was positively changed in experimental group but negatively changed in control group from the SN to DMN. Further correlation analysis of the changes in each network with the behavioral improvements showed that the changes in SN were stronger positively correlated with the behavioral improvement of letter memory task. These findings indicated that the SN was not only a switch between the target ROI and the other networks in the feedback training but also an essential factor to the behavioral improvement.

关键词： working memory training structural equation modeling silence network central executive network default mode network

来源：评论

学校读者我要写书评

暂无评论

Tomosynthesis method for depth resolution of beta emitters

Tomosynthesis method for depth resolution of beta emitters

引用

conference on Medical imaging - biomedical applications in molecular, structural, and functional imaging

作者： Mertzanidou, Thorny Calvert, Nick Tuch, David Stoyanov, Danail Arridge, Simon UCL Ctr Med Image Comp London England UCL Dept Med Phys & Biomed Engn London England Lightpoint Med London England

ISBN: (纸本)9781510625549

The motivation of this study derives from the need for tumour margin estimation after surgical excision. Conventional beta autoradiography of beta emitters can be used to image tissue sections providing high spatial resolution compared to in-vivo molecular imaging. However, it requires sectioning of the specimen and it provides a 2D image of the tissue. imaging of the 3D tissue sample can be achieved either by imaging sequential 2D sections, which is time-consuming and laborious, or by using a specialised detector for imaging that records the particles' direction, in addition to their position, when they hit the detector. In this work we investigate whether a novel beta-tomosynthesis approach can be used for depth resolution of beta emitters. The technique involves acquiring multiple 2D images of the intact tissue sample while the detector rotates around the sample. The images are then combined and used to reconstruct the 3D position of the sources from a limited angle of conventional 2D autoradiography images. We present the results from Geant4 forward simulations and the reconstructed images from a breast tissue sample containing a Fluorine-18 positron emission source. The experiments show that the proposed method can provide depth resolution under certain conditions, indicating that there is potential for its use as a 3D molecular imaging technique of surgical samples in the future.

关键词： molecular imaging autoradiography tomosynthesis Monte Carlo methods

来源：评论

学校读者我要写书评

暂无评论

Bayesian Approach for Network Modeling of Brain structural Features

Bayesian Approach for Network Modeling of Brain Structural F...

引用

conference on Medical imaging 2010 - biomedical applications in molecular, structural, and functional imaging

作者： Joshi, Anand A. Joshi, Shantanu H. Leahy, Richard M. Shattuck, David W. Dinov, Ivo Toga, Arthur W. Univ Calif Los Angeles Lab Neuro Imaging Los Angeles CA 90095 USA Univ So Calif Signal & Image Proc Inst Los Angeles CA 90089 USA

ISBN: (纸本)9780819480279

Brain connectivity patterns are useful in understanding brain function and organization. Anatomical brain connectivity is largely determined using the physical synaptic connections between neurons. In contrast statistical brain connectivity in a given brain population refers to the interaction and interdependencies of statistics of multitudes of brain features including cortical area, volume, thickness etc. Traditionally, this dependence has been studied by statistical correlations of cortical features. In this paper, we propose the use of Bayesian network modeling for inferring statistical brain connectivity patterns that relate to causal (directed) as well as non-causal (undirected) relationships between cortical surface areas. We argue that for multivariate cortical data, the Bayesian model provides for a more accurate representation by removing the effect of confounding correlations that get introduced due to canonical dependence between the data. Results are presented for a population of 466 brains, where a SEM (structural equation modeling) approach is used to generate a Bayesian network model, as well as a dependency graph for the joint distribution of cortical areas.

关键词： Bayesian Networks structural equation modeling structure learning cortical features

来源：评论

学校读者我要写书评

暂无评论

Tomographic Bioluminescence imaging by an Iteratively Re-weighted Minimization

Tomographic Bioluminescence Imaging by an Iteratively Re-wei...

引用

conference on Medical imaging - biomedical applications in molecular, structural and functional imaging

作者： Wu, Ping Liu, Kai Xue, Zhenwen Guo, Wei Qin, Chenghu Tian, Jie Chinese Acad Sci Intelligent Med Res Ctr Inst Automat Beijing 100190 Peoples R China Beijing Univ Technol Coll Elect Informat & Control Engn Beijing 100022 Peoples R China

ISBN: (纸本)9780819489661

Tomographic bioluminescence imaging (TBI), with visible light emission in living organisms, is an effective way of molecular imaging, which allows for the study of ongoing tumor biological processes in vivo and non-invasively. This newly developed technology enables three-dimensional accuracy localization and quantitative analysis of the target tumor cells in small animal via reconstructing the images acquired by the high-resolution imaging system. Due to the difficulty of reconstruction, which is often referred to an ill-posed inverse problem, continuous efforts are still made to find more practical and efficient approaches. In this paper, an iteratively re-weighted minimization (IRM) has been applied to reconstruct the entire source distribution, which is known as sparse signals, inside the target tissue with the limited outgoing photon density on its boundary. By introducing a weight function into the objective function, we convert the lp norm problem into a more simple form of l2 norm to reduce the computational complexity. The weight function is updated in each iterative step to compute the final optimal solution more efficiently. This method is proved to be robust to different parameters, and mouse experiments are conducted to validate the feasibility of IRM approach, which is also reliable at whole-body imaging.

关键词： Tomographic bioluminescence imaging molecular imaging inverse problem sparse signals reconstruction

来源：评论

学校读者我要写书评

暂无评论

Segmentation and assessment of structural plasticity of hippocampal dendritic spines from 3D confocal light microscopy

Segmentation and assessment of structural plasticity of hipp...

引用

spie conference on Medical imaging - biomedical applications in molecular, structural, and functional imaging

作者： Basu, Subhadip Saha, Punam Kumar Baczynska, Ewa Roszkowska, Matylda Magnowska, Marta Das, Nirmal Guha, Indranil Wlodarczyk, Jakub Jadavpur Univ Dept Comp Sci & Engn Kolkata 700032 India Univ Iowa Dept Elect & Comp Engn Iowa City IA 52242 USA Univ Iowa Dept Radiol Iowa City IA 52242 USA Polish Acad Sci Nencki Inst Expt Biol Pasteura 3 PL-02093 Warsaw Poland

ISBN: (数字)9781510616462

ISBN: (纸本)9781510616462

We present new methods for segmentation of hippocampal dendritic spines in 3D confocal light microscopy and computation of 3-D morphological attributes characterizing dendritic spine plasticity. The methods are applied on 3D confocal light microscopy images of dendritic spines from dissociated hippocampal cultures. The segmentation method is based on the principle of multi-scale opening which uses a set of user-specified seeds and iteratively segments structures at different scales starting at a large scale and progressing toward finer scales. The accuracy of the segmentation method is evaluated by comparing its results with the gold standard obtained by manual labelling. The reproducibility of the overall method involving segmentation as well as computation of structural measures is assessed by comparing the values of structural measures derived from segmentation results generated using seeds from three mutually-blinded users. Finally, the performance of the overall method is examined in terms of its ability to characterize spine morphological changes after chemically induced long-term potentiation.

关键词： Confocal microscopy Multiscale opening Plasticity Dendritic spines Spine Morphology

来源：评论

学校读者我要写书评

暂无评论

Intraluminal fiber-optic Doppler imaging catheter for structural and functional optical coherence tomography

Intraluminal fiber-optic Doppler imaging catheter for struct...

引用

conference on Coherence Domain Optical Methods in biomedical Science and Clinical applications VI

作者： Li, XD Ko, T Fujimoto, JG MIT Elect Res Lab Dept Elect Engn & Comp Sci Cambridge MA 02139 USA

ISBN: (纸本)0819443581

A miniature fiber Doppler imaging catheter for integrated functional and structural optical coherence tomography (OCT) imaging has been developed. The Doppler catheter can be use to map blood flow profile within a vessel as well as image vessel wall structures. The prototype Doppler catheter was demonstrated in measuring the intraluminal velocity profile in a vessel phantom (conduit). A simple mathematical model can be used to estimate the flow profile outside of normal OCT beam penetration. By extending the spatial range of the flow measurements to approximately two times the normal OCT image penetration depth, the total flow rate can then be calculated from the estimated velocity profiles. The measured total flow rate in the vessel phantom obtained from the Doppler imaging catheter correlates well with the calibrated flow values. The Doppler OCT catheter's ability to simultaneously obtain both structural and functional information makes it a potentially powerful device of cardiovascular imaging.

关键词： Optical coherence tomography Doppler tomography Doppler effect structural imaging Blood circulation Coherence imaging Fiber optics GRIN lenses Metals Prototyping

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11页 << < 1 2 3 4 5 6 7 8 9 10 > >>

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：