diffusion weighted imaging physical basis and types of acquisition
Tài liệu Role of diffusion-weighted imaging in the diagnosis of gynecological diseases pdf
... body MR imaging: fast MR imaging and diffusionweighted imaging Int J Clin Oncol 11:278–285 26 Thoeny HC, De Keyzer F (2007) Extracranial applications of diffusionweighted magnetic resonance imaging ... and bandwidth 3,018 Hz/pixel) with a chemical shift selective (CHESS) fat suppression and parallel imaging technique (SENSE factor of 2) Imaging time of DWI was 90 s for 20 slices Detection of ... BJ (1999) Diagnosis and staging of ovarian cancer: comparative values of Doppler and conventional US, CT, and MR imaging correlated with surgery and histopathologic: report of the Radiology Diagnostic...
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Discussion paper: Key concepts of the Alternative Investment Fund Managers Directive and types of AIFM pptx
... development of regulatory technical standards by ESMA to determine types of AIFM for the purposes of consistent harmonisation and uniform application of the conditions of the AIFMD Many of the articles ... determine types of AIFM, where relevant in the application of the AIFMD, and to ensure uniform conditions of application of the AIFMD The different types of AIFM will manage a variety of AIF legal ... functions under Annex I) IV Definition of AIF Types of AIF 11 It is not possible to define the types of AIFM without considering the types of AIF for which they act and, in particular, the different...
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báo cáo hóa học: " Physical activity and quality of life in community dwelling older adults" pptx
... important component of the physical activity and QOL relationship Physical Activity, Quality of Life, and Demographics As noted earlier, relationships among physical activity and quality of life have ... determinant of QOL We used the 6-item physical self-worth scale of Fox and Corbin's Physical Self-Perception Profile [33] A sample item from this scale is "I am extremely proud of who I am and what ... contributions to conception and design, acquisition of data, analysis and interpretation of data, have been involved in drafting and revising the manuscripts, and given final approval of the version to...
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Báo cáo hóa học: " Research Article Imaging Arterial Fibres Using Diffusion Tensor Imaging—Feasibility Study and Preliminary Results" potx
... cells and collagen and lower levels of elastin [7, 27] The quantity and distribution of fibres within the arterial wall and their quality is therefore a direct measure of the mechanical strength and ... Diffusion Tensor Imaging (DTI) [16] DTI is capable of describing the degree of anisotropy of a tissue by analysing the diffusion of water molecules This motion, which is normally random and hence the ... the analysis of the tensor and one for the analysis of the orientation of fibres; see Figure The tensor analysis consisted of the extrapolation of the first eigenvector from the tensor, and EURASIP...
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Báo cáo lâm nghiệp: "Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in different gradation conditions" ppsx
... pathogens, lightning and wind-felling, and in the merocoenosis of snags and fragments (tree parts), in spruce stands of different age and in different situations with regard to the occurrence and population ... highest frequency of occurrence of P pityogra- Table The frequency of occurrence and stem cover of some cambioxylophagous insects (%) in standing spruce trees non-infested and infested by fungal ... cambioxylophagous insects typical of branches of the lower part of the crown Also, the effect of physiological stress on the process of branch dying is highly likely and cannot be overlooked Of cambioxylophagous...
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Báo cáo y học: "Physical Exercise and Quality of Life in Breast Cancer Survivors" potx
... growing, also on the basis of observational studies based on self-reported measures of leisure-time physical activity Literature offers preliminary evidence of the positive effects of exercise on QOL ... assessment of physical activity Indeed, the LSI is an established validated instrument for general and clinical setting, and ensures accurate assessment of physical activity on a quantitative basis ... still a lack of knowledge about the optimal types, duration, frequency, and timing of exercise [15-16] The aerobic component has been emphasised in physical exercise programmes and health promotion...
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Synthesis, physical properties and applications of bisanthene based near infrared dyes and semiconductors
... VIII LIST OF TABLES Table 2.1 Summary of photophysical and electrochemical properties of compounds 24, 2-5 and 2-6…………………… ………………………………………………….35 Table 3.1 Summary of photophysical and electrochemical ... decrease of the optical intensity at the major absorption band (550-800 nm) and appearance of new absorption band in the shorter wavelength (Figure 2.4) The half-times (t1/2) of around 618, 674 and ... spectra of 2-4 (a), 2-5 (c) and 2X (e) in toluene recorded during the irradiation The arrows indicate the change of spectral Right: the change of optical density of 2-4 (b), 2-5 (d) and 2-6 (f)...
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Elements of fiction and types of conflict ppt
... following information about the types of conflict that form the basis of plot There are three types of external conflict: character vs character; character vs society; and character vs nature The ... Fiction Hand, please follow these guidelines Trace your hand or use a graphic on a blank piece of paper Be sure to label each digit with one of the elements of fiction Where needed, provide names of ... provide any plot developments and apply to many types of stories in almost any genre When doing an elements of fiction hand, state the theme in five words or less Often it can be stated in one...
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Báo cáo y học: "Conventional and diffusion-weighted magnetic resonance imaging findings of benign fibromatous paratesticular tumor: a case report" pptx
... heterogeneous on T2 -weighted and apparent diffusion coefficient (ADC) maps, with areas of high T2 signal and ADC value of 1.56 × 10-3mm2/s, and others of very low T2 signal and ADC value of 0.86 × 10-3 ... sagittal and coronal T 2weighted sequences and spin-echo axial T1 -weighted sequences Diffusion imaging was performed in the axial plane, using a single shot, multi-slice spin-echo planar diffusion ... component of an adenomatoid tumor of the tunica albuginea The presence of abundant collagenproducing fibroblastic cells and a dense network of collagen fibres cause restriction in the diffusion of the...
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Báo cáo khoa học: "Value of diffusion weighted MR imaging as an early surrogate parameter for evaluation of tumor response to high-dose-rate brachytherapy of colorectal liver metastase" docx
... Boxplot depicting changes of mean ADC of nontreated and treated tumors at early and follow-up MRI compared to baseline MRI Boxplot illustrates changes of mean ADC of non-treated and treated colorectal ... DM: Diffusion- weighted MR imaging of the liver Radiology 2010, 254:47-66 16 Cui Y, Zhang XP, Sun YS, Tang L, Shen L: Apparent diffusion coefficient: potential imaging biomarker for prediction and ... 3Department of Radiotherapy, Otto-von-Guericke University Magdeburg, Germany Authors’ contributions CW participated in the design and coordination of the study, data acquisition and analysis and drafted...
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báo cáo khoa học: " Diagnosis of pericardial cysts using diffusion weighted magnetic resonance imaging: A case series" pot
... Caucasian woman with past history of hypertension and diabetes mellitus presented with a long-standing history of chest pain and shortness of breath Physical examination and a twelve-lead electrocardiogram ... Stecco A, Lombardi M, Casadio C, Carriero A: Role of diffusion- weighted imaging in the differential diagnosis of benign and malignant lesions of the chest-mediastinum Radiol Med 2011, 116:720-733 ... http://www.jmedicalcasereports.com/content/5/1/479 Page of 14 Avcu S, Koseoglu MN, Ceylan K, Dbulutand M, Unal O: The value of diffusion- weighted MRI in the diagnosis of malignant and benign urinary bladder lesions...
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Báo cáo y học: "Diffusion-weighted magnetic resonance imaging for predicting the clinical outcome of comatose survivors after cardiac arrest: a cohort study" pptx
... duration and time between MRI and ROSC in both groups were compared by t-test and severe disability) were grouped as unfavourable outcomes; and the GOS scores of and (moderate disability and good ... sequences, and it can be easy to mark the area with the minimum ADC on the ADC maps based on the T2 -weighted image (T2WI) and diffusion- weighted imaging (DWI) The circular region -of- interest ... three months after out -of- hospital cardiac arrest • The relationship between the GOS and the regional ADC values of the cortex and deep grey nuclei was observed, and cutoffs of ADC values discriminated...
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Registration, atlas generation, and statistical analysis of high angular resolution diffusion imaging based on riemannian structure of orientation distribution functions 1
... chosen direction and the projections of estimated regression geodesics on the chosen direction respectively 110 xviii List of Symbols DWI Diffusion- Weighted Imaging DTI Diffusion Tensor Imaging HARDI ... denotes the ODF values in the diffusion direction of CC and red denotes the ODF values in the diffusion direction of CST For both diffusion directions, the crosses (or dots) and lines represent the ... Hosseinbor, Moo K Chung, Andrew L Alexander, Anqi Qiu, Diffeomorphic Metric Mapping of Hybrid Diffusion Imaging based on BFOR iii Signal Basis, Information Processing in Medical Imaging (IPMI), 2013...
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Registration, atlas generation, and statistical analysis of high angular resolution diffusion imaging based on riemannian structure of orientation distribution functions 2
... initial momentum m0 and the evolving diffeomorphism φt We see that by making a change of variables and obtain the following expression relating mt to the initial momentum m0 and the geodesic φt ... connecting Itemp and Itarg , mt = |Dφ−1 |(Dφ−1 ) m0 ◦ φ−1 t t t 20 (2.10) 2.2 Large Deformation Diffeomorphic Metric Mapping where stands for the transpose of matrix As a direct consequence of this property, ... product The group of diffeomorphisms G(V ) are the solutions of Eq (2.6) with the vector fields satisfying vt V dt < ∞ We define a metric distance between a target shape Itarg and a template shape...
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Registration, atlas generation, and statistical analysis of high angular resolution diffusion imaging based on riemannian structure of orientation distribution functions 3
... Computational complexity of LDDMM-FA, LDDMM-ODF and LDDMM-Raffelt The computational complexity for the calculation of the trajectory and the regulation term of LDDMM-ODF and LDDMM-Raffelt is of the same order ... is the ith column of (Dx φ1 )−1 Thus, the trace of Dx h(Dx φ1 )−1 39 DIFFEOMORPHIC METRIC MAPPING OF HIGH ANGULAR RESOLUTION DIFFUSION IMAGING BASED ON RIEMANNIAN STRUCTURE OF ORIENTATION DISTRIBUTION ... be the sum of Dirac measures such that mt = 41 N i=1 αi (t) ⊗ δφt (xi ) and DIFFEOMORPHIC METRIC MAPPING OF HIGH ANGULAR RESOLUTION DIFFUSION IMAGING BASED ON RIEMANNIAN STRUCTURE OF ORIENTATION...
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Registration, atlas generation, and statistical analysis of high angular resolution diffusion imaging based on riemannian structure of orientation distribution functions 4
... ESTIMATION OF WHITE MATTER ATLAS FROM HIGH ANGULAR RESOLUTION DIFFUSION IMAGING a shape prior of the white matter anatomy and the likelihood of individual observed HARDI datasets First of all, we ... 69 BAYESIAN ESTIMATION OF WHITE MATTER ATLAS FROM HIGH ANGULAR RESOLUTION DIFFUSION IMAGING 4.4.1 Derivation of Update Equations of σ and m0 in EM We now derive Eqs (4.12) and (4.13) from Q-function ... Diffeomorphisms Figure 4.2: Illustration of the general framework of the Bayesian HARDI atlas estimation 4.2 The Shape Prior of the Atlas and the Distribution of Random Diffeomorphisms Adopting previous...
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Registration, atlas generation, and statistical analysis of high angular resolution diffusion imaging based on riemannian structure of orientation distribution functions 5
... T1 image of the selected slice and ROIs Panel (b) illustrates the ODFs in the selected ROI and the peaks of each ODF, where blue and red lines indicate the diffusion directions of CC and CST based ... denotes the ODF values in the diffusion direction of CC and red denotes the ODF values in the diffusion direction of CST For both diffusion directions, the crosses (or dots) and lines represent the ... where blue and red lines indicate the diffusion directions of CC and CST based on their ODF values After determining the directions, Figure 5.11 shows the ODF values of observations and regression...
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Registration, atlas generation, and statistical analysis of high angular resolution diffusion imaging based on riemannian structure of orientation distribution functions 6
... accurately reconstruct the diffusion signal and EAP, a thorough 113 CONCLUSION AND FUTURE WORK exploration of q-space is needed, which requires multiple b-value diffusion weighted imaging (mDWI) MDWI ... techniques like diffusion tensor imaging (DTI) or high angular resolution diffusion imaging (HARDI) Hybrid diffusion imaging (HYDI) [117] is a mDWI technique that samples the diffusion signal ... 858–865, 2008 ¨ [44] E O ZARSLAN AND T.H M ARECI Generalized DTI and Analytical Relationships Between Diffusion Tensor Imaging and High Angular Resolution Diffusion Imaging Magnetic Resonance in...
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Search for new types of deoxyribozymes and development of human topoisomerases inhibitors on the basis of oligonucleotides
... versatilities of RNA in forming intricate and functional structures are due to the combined use of standard Watson-Crick base pairing, non-standard base pairing, and a variety of non-covalent ... categories of introns and splicing mechanisms These consist of nuclear tRNA introns [66], archaeal introns [67], nuclear mRNA introns [68], and the group I and group II introns [69, 70] Of these ... effects of its typical duplex structure simply by abandoning its complementary strand, since single stranded DNA can form a great diversity of structures by utilizing more exotic secondary and tertiary...
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An investigation into some types of verbal responses to questions in English and Vietnamese conversation
... on the basis of evidence he has In (27), there is a clash of non-observance of the maxim of Quantity and Quality A great number of similar cases are available in Vietnamese These patterns of responses ... always consists of a first part and a second part The utterance of a first part immediately creates an expectation of the utterance of a second part of the same pair There is a class of first pair ... Australia, America, and England; another group consist of Vietnamese people All of them are working in RMIT University and American International College (AIC), World Bank Office of Road Project...
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