2high resolution structural brain imaging
Tài liệu Independent Component Analysis - Chapter 22: Brain Imaging Applications docx
... 408 BRAIN IMAGING APPLICATIONS Well-known functional brain mapping methods include positron emission tomography (PET) and functional ... time resolution of PET and fMRI is limited, due to the slowness of the metabolic response in the brain, which is in the range of a few seconds Here we concentrate on another type of functional brain ... another type of functional brain imaging methods that are characterized by a high time resolution This is possible by measuring the electrical activity within the brain Electrical activity is the...
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Cognitive and Physiologic Correlates of Subclinical Structural Brain Disease in Elderly Healthy Control Subjects docx
... Figure Examples of the types of subclinical structural brain disease are shown with representative magnetic resonance images Arrows indicate the areas of each structural change: A, cortical atrophy ... mechanism that integrates structural and functional connectivity data to explain the cognitive consequences of subtle structural damage in normal aging The relationship between structural damage and ... REFERENCES Ketonen LM Neuroimaging of the aging brain Neurol Clin 1998;16:581598 Leuchter AF, Newton TF, Cook IA, Walter DO, Rosenberg-Thompson S, Lachenbruch PA Changes in brain functional connectivity...
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advances in brain imaging
... describe fascinating developments in cognitive xvi ADVANCES IN BRAIN IMAGING neuroscience that are important to the field of brain imaging Neuroimaging researchers have been able to build upon the basic ... for our patients xviii ADVANCES IN BRAIN IMAGING Chapter Functional Brain Imaging in Psychiatry The Next Wave Joseph H Callicott, M.D Early failure to identify brain lesions in psychiatric disorders ... slabs of brain with a nominal resolution at 1.5 T of approximately 7.5 mm x 7.5 mm x 15 mm Like structural imaging, 1H-MRS relies on regional differences in proton (1 H) concentration Whereas structural...
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Design of a near infrared spectrophotometry brain imaging system
... activity Keywords: near-infrared spectroscopy, brain activity, functional monitoring and imaging, imaging, optical imaging ii Acknowledgements The author would like to thank Dr Doyle, this project’s ... Near-infrared spectrophotometry (NIRS) is a non-invasive imaging technique that can be used to measure brain function It provides a higher spatial resolution than EEG or MEG without subjecting the patient ... interests; imaging, optics, and the brain Additionally, the project could be done fairly cost effectively, costing roughly $200300 1.2 Definition The main scope of this project is to measure brain activity...
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ADVANCES IN BRAIN IMAGING doc
... (PET), functional magnetic resonance imaging (fMRI), as well as structural imaging techniques, including newer structural imaging methods such as diffusion tensor imaging (DTI) or magnetization transfer ... neuroimaging of dissociative amnesia and fugue Dissociative amnesia and fugue conditions typically occur in the absence of significant brain damage as detected by conventional structural brain imaging ... trauma and stress in a variety of cultures The advent of functional brain imaging techniques and newer sophisticated structural brain imaging methods has considerably improved and will continue to...
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INVESTIGATION ON CLINICAL FEATURES, BRAIN IMAGING, a NUMBER OF RIKS FACTORS AND THE VALUE OF d DIMER IN DIAGNOSIS OF CEREBRAL VENOUS THROMBOSIS
... LABORATORYL 1.3.2 Magnetic resonance imaging 1.3.2.1 Magnetic resonance imaging (MRI) Magnetic resonance imaging in combination with magnetic resonance venography (MRV) imaging provide a best non-invasive ... thrombosis Advantages of magnetic resonance imaging are it can survey the blood flow and allow us to see the direct imaging of the venous sinous thrombosis and brain parenchymal injuries 1.3.4 D-dimer ... Found images of CVT by using routine magnetic resonance imaging in combination with magnetic resonance imaging of vein and/or routine magnetic imaging in combination with computerized tomography...
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subhasis chaudhuri - super - resolution imaging
... term resolution unequivocally refers to the spatial resolution, and the process of obtaining a high resolution image from a set of low resolution observations is called super -resolution imaging ... The block diagram of constructing a high resolution frame from multiple low resolution frames is shown in Figure 1.3 Here, the SUPER -RESOLUTION IMAGING low resolution frames are input to the motion ... SUPER -RESOLUTION IMAGING In almost every application, it is desirable to generate an image that has a very high resolution Thus, a high resolution image could contribute...
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báo cáo hóa học: " Differential aquaporin 4 expression during edema build-up and resolution phases of brain inflammation" doc
... expressed as μg Evans blue per g brain tissue Prior to brain homogenization, representative qualitative images of Evans blue extravasation from PBS perfused brains were taken using a digital ... transport in glial cells: high -resolution immunogold cytochemistry of aquaporin-4 in rat brain J Neurosci 1997, 17:171-180 Saadoun S, Papadopoulos MC: Aquaporin-4 in brain and spinal cord oedema ... questioned whether AQP4 was differentially modulated during edema formation and resolution We chose an inflammatory model because brain inflammation can be considered as a common determinant of vasogenic...
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Báo cáo hóa học: " Resolution-enhanced radar/SAR imaging: an experiment design framework combined with neural network-adapted variational analysis regularization" doc
... amplitude phase estimation (APES) technique for array sensor/SAR imaging The unified DEDR-VA framework for highresolution radar/SAR imaging in uncertain scenarios is conceptualized in Section 4, ... with noise; hence, the imaging problem at hand must be qualified and treated as a statistical nonlinear uncertain inverse problem [1,7,9] The enhanced high -resolution imaging implies solution ... the most prominent existing competing high -resolution RS imaging techniques [1-7] (both without fusion and in the fused version) in the attainable resolution enhancement as well as in the convergence...
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báo cáo hóa học: " Evaluation of 18F-nifene binding to a4b2 nicotinic receptors in the rat brain using microPET imaging" ppt
... standard and the brain extract Ex vivo microPET In order to ascertain the brain uptake of 18F-nifene, after completion of the in vivo microPET scans, the rats were sacrificed and the brain was extracted ... running brain extracts and were compared to the peak to the parent compound providing evidence that the primary species within the brain of the rat was 18F-nifene After sacrificing the rat, the brain ... the plasma (C) Ex vivo rat brain was dissected into two hemispheres–the left hemisphere was cut into 40-μm thick sagittal brain sections and were scanned to reveal brain areas (D) Binding of...
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Báo cáo hóa học: " Research Article The High-Resolution Rate-Distortion Function under the Structural Similarity Index" potx
... finally obtain a closed form expression for the high -resolution SSIM-RDF We end the paper by showing how to numerically approximate the high -resolution SSIM-RDF of real images where R(D) is the ... use Theorem to obtain the highresolution RDF for the SSIM index Theorem d(x, y), as defined in (3), is locally quadratic Proof See the appendix Theorem The high -resolution RDF R(D) for the source ... results to the information theoretic estimated high -resolution SSIM RDF obtained as described in the previous section We are interested in the high -resolution region, which corresponds to small d(x,...
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Báo cáo hóa học: " Research Article Design of Large Field-of-View High-Resolution Miniaturized Imaging System" potx
... of the LR frames (3) The same effective resolution should be obtained throughout the FOV Effective resolution refers to the resolution obtainable after superresolution This requires the density of ... frames, then the resolution of that region can be improved by a factor of N by digital superresolution provided each LR frame is undersampled by a factor of N However, in practice, the resolution enhancement ... to simultaneous realization of superresolution and large FOV for computational imaging systems are nonexistent FACTORS INFLUENCING DESIGN 2.1 Miniaturized imaging systems Figure shows three possible...
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Báo cáo hóa học: " Editorial Super-Resolution Imaging: Analysis, Algorithms, and Applications" pptx
... interests include mathematical image processing and computer vision, VLSI physical design, and human brain mapping He is an active Member of many scientific societies, including SIAM, AMS, and IEEE ... Milestone Series Volume (CCD and CMOS imagers), the Guest Editor of the IEEE SPM Special Issue on Superresolution Image Reconstruction (May, 2003), the Editor of EURASIP Journal on Applied Signal Processing,...
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Báo cáo sinh học: "High-resolution quantitative imaging of mammalian and bacterial cells using stable isotope mass spectrometry" docx
... labels, gives high lateral resolutions, provides exceptional depth resolution and would be harmless for clinical use MIMS can also be used for high -resolution quantitative imaging of radioisotopes ... possible to obtain with other methods Results Imaging of unlabeled cells and tissue sections One qualitative application of MIMS is high -resolution imaging Detailed anatomical images can be obtained ... formed using only a few atomic layers of the sample, the depth resolution (z resolution) can be smaller than nm, much better than the resolution that would be provided by an exceptionally thin electron-microscopy...
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Báo cáo sinh học: " Imaging with isotopes: high resolution and quantitation" potx
... MIMS is not just an imaging instrument; for me, it is a measuring instrument - on this account it is unique The imaging tells us where there is something at a subcellular resolution But its real ... and other similar atomic clusters Slodzian’s instruments enabled both high spatial resolution and the high mass resolution necessary for separating isobars at high secondary-ion transmissions Once ... paper in the development of a really important imaging method.” “The most significant feature of this technique is that it opens up a whole new world of imaging; we haven’t yet imagined all that we...
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Báo cáo y học: "Voxel-based structural magnetic resonance imaging (MRI) study of patients with early onset schizophrenia" potx
... Global brain volumes Global brain volumes Control groupa (n = 18) EOS groupa (n = 18) Group difference (%) t p Value Whole brain (ml) Grey matter (ml) White matter (ml) CSF (ml) Grey matter/whole brain ... reports on AOS patients Brain development in early life is thought to be dynamic, with the patterns of growth being diverse across different brain regions [26] In particular, brain regions that are ... period of brain development (that is, the period before adolescence) [27,28] In the present study, we conducted voxel-based structural MRI analyses to explore any pattern of regional brain tissue...
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Báo cáo y học: "High-resolution optical coherence tomographic imaging of osteoarthritic cartilage during open knee surgery" ppsx
... attractive imaging alternative for OA because it permits imaging in near-real time with unprecedented high resolution (4–15 µm), 10 to 100 times as fine as that of current clinical imaging modalities ... Imaging catheters can be constructed with diameters less than 0.006 inches (Lightlab Imaging Inc, Westford, MA, USA; http:// www.lightlabimaging.com) Recently, OCT has been adapted for high -resolution ... osteoarthritic structural changes in cartilage can be visualized with OCT in vivo using a handheld probe Structural changes including cartilage thinning and fibrillations were observed at a resolution...
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Báo cáo khoa học: "Use of kilovoltage X-ray volume imaging in patient dose calculation for head-and-neck and partial brain radiation therapy" pptx
... accelerator equipped with an integrated kV X-ray volumetric imaging system (Elekta, Synergy S, XVI, Crawley, UK) For imaging the head-and-neck and brain tumor patients, we used the following parameters: ... planning CT images to correct the patient setup error [8,9] KV-CBCT imaging has shown enough soft tissue contrast and spatial resolution for soft-tissue based setup, but the image quality is affected ... different tumor locations This result suggests that, for head-and-neck and brain patients, variations in the scatter effect in imaging different tumor sites is relatively small from patient to patient,...
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báo cáo khoa học: "Atomic force microscopy: a powerful tool for high-resolution imaging of spermatozoa" ppt
... tool to study various biomolecules [2-4], including sperm cells [5] AFM imaging in air require cells to be fixed to avoid structural changes caused by drying forces on the cell [6] But this fixing ... analyzing their structural and functional aspects at the sub-molecular level This article provides a review on morphological and topological images of sperm cells using AFM Such high -resolution images ... chromatin complexes with protamine are due to the convolutions of the imaging tip and the sample morphology [32] A similar study on structural organisation of chromatin subunits from spermatozoa of...
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Báo cáo y học: "Clinical review: Prognostic value of magnetic resonance imaging in acute brain injury and coma" pot
... magnetic resonance imaging in the assessment of neurological diseases J Neuroimaging 2004, 14:303-313 Horsfield Ma: Magnetization transfer imaging in multiple sclerosis J Neuroimaging 2005, Suppl:58S-67S ... traumatic brain injury Brain 2000, 123:2046-2054 Marino S, Zei E, Battaglini M, Vittori C, Buscalferri A, Bramanti P, Federico A, De Stefano N: Acute metabolic brain changes following traumatic brain ... Late subacute phase (days 14 to 20) Chronic phase (>21 days) Characteristics Brain swelling Brain swelling Absence of brain swelling Diffuse atrophy and dilatation of the ventricles DWI Hypersignals...
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