Perfusion MRI
Lung perfusion: MRI vs. SPECT for screening in suspected chronic thromboembolic pulmonary hypertension.
... DCE perfusion images were analyzed on a slice-by-slice basis by subtraction of the baseline precontrast image; this was performed on a GE Advantage ...DCE perfusion MRI and perfu- sion SPECT, the ...
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Evidence-based guideline: The role of diffusion and perfusion MRI for the diagnosis of acute ischemic strokeReport of the Therapeutics and Technology Assessment Subcommittee of the American Academy of Neurology
... ASC Perfusion MRI and receives royalties from the University of Pennsylvania for its licensure; and has acted as a witness or consultant in legal ...
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Quantitative histopathologic assessment of perfusion MRI as a marker of glioblastoma cell infiltration in and beyond the peritumoral edema region
... local perfusion and tumor burden proposed ...tumor-related perfusion drop was related to infiltration through the biomechanical effect of vascular co-option and/or edema, which are clinically relevant ...
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Estimation of Mean Radius, Length and Density of Microvasculature Using Diffusion and Perfusion MRI
... and perfusion information in MRI maps can be combined to yield morphological information, such as capillary density, volume and possibly capillary plasma ...
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Texture Feature Ratios from Relative CBV Maps of Perfusion MRI Are Associated with Patient Survival in Glioblastoma
... MATERIALS AND METHODS: MR perfusion data of 24 patients with glioblastoma from The Cancer Genome Atlas were analyzed in this study. One- and 2D texture feature ratios and kinetic textural features based on ...
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Discrimination between Glioma Grades II and III Using Dynamic Susceptibility Perfusion MRI: A Meta Analysis
... When evaluating the diagnostic ac- curacy of DSC in this meta-analysis, we used exploratory evaluations of optimal cutoffs for discrimination between gli- oma grades II and III. This lack of eval- uating diagnostic ...
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Introducing a New Definition Towards Clinical Detection of Microvascular Changes Using Diffusion and Perfusion MRI
... Blood perfusion of tissue assures the delivery of oxygen and nutrients to cells. To achieve this goal, fresh, oxygenated \arterial" blood is delivered to the tissue through the capillary network, which is ...
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Added Value of Spectroscopy to Perfusion MRI in the Differential Diagnostic Performance of Common Malignant Brain Tumors
... PWI. Dynamic-susceptibility perfusion contrast-enhanced T2*- weighted gradient-echo echo-planar images (TR/TE ⫽ 1980/30 ms, 4.0-mm thick sections, 0.8-mm gap, FOV ⫽ 220 mm, ma- trix ⫽ 128 ⫻ 128, flip angle ⫽ 90°, ...
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Comparison of methods for quantitative analysis of dynamic susceptibility contrast enhanced brain perfusion MRI
... Quantitative perfusion measurements may be derived by different postpro- cessing methods [18]. Most methods demand for user-selected parameters which may lead to variation in quantitative perfusion values. ...
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Arterial Spin Labeling Perfusion MRI Stratifies Progression Free Survival and Correlates with Epidermal Growth Factor Receptor Status in Glioblastoma
... focal perfusion abnormality (hyper- or hypoperfu- sion) in the tumor ...Two perfusion patterns were character- ized on the basis of qualitative evaluation by the readers: Pattern 1 was characterized by the ...
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Diffusion and Perfusion MRI to Differentiate Treatment Related Changes Including Pseudoprogression from Recurrent Tumors in High Grade Gliomas with Histopathologic Evidence
... consisted of 68 consecutive patients with HGG according to the following inclu- sion criteria: 1) diagnosis of primary gli- oblastoma or anaplastic astrocytoma, 2) treatment with RT and temozolomide (Temodar), 3) new ...
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Contrast Leakage Patterns from Dynamic Susceptibility Contrast Perfusion MRI in the Grading of Primary Pediatric Brain Tumors
... contrast perfusion MR imaging has demonstrated utility in the pretreatment evaluation of adult in- tracranial neoplasms for tumor grading, guiding biopsy, and ...
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Evaluation of Encephaloduroarteriosynangiosis Efficacy Using Probabilistic Independent Component Analysis Applied to Dynamic Susceptibility Contrast Perfusion MRI
... classic perfusion measures—that is, by quantitatively separating the DSC-MR imaging time-series data in each image voxel into independent temporal patterns con- sistent with arterial, capillary, and venous ...
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What Have We Learned from Perfusion MRI in Multiple Sclerosis?
... have not been accounted for in any MS perfusion study. Further- more, although technical factors can alter the comparison among subjects, analysis of lesion perfusion has been performed using NAWM as a ...
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Impact of Software Modeling on the Accuracy of Perfusion MRI in Glioma
... Relative cerebral blood volume values to differentiate high-grade glioma recurrence from posttreatment radiation effect: direct correlation between image-guided tissue histopathology and[r] ...
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Automatic Characterization of Myocardial Perfusion in Contrast Enhanced MRI
... The main limitation of our approach is the 2D nature of the image registration that does not allow correcting the mis- alignment component along the normal to the acquisition plane (i.e., z-axis). The proposed algorithm ...
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The role of perfusion and diffusion MRI in the assessment of patients affected by probable idiopathic normal pressure hydrocephalus. A cohort-prospective preliminary study
... different perfusion patterns between PP and NP, we suggest that perfusion MRI could be use- ful together with invasive tests in selecting patients for surgical ...in perfusion values in PVWM ...
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Comparison of semi quantitative and quantitative dynamic contrast enhanced MRI evaluations of vertebral marrow perfusion in a rat osteoporosis model
... To the best of our knowledge, few longitudinal animal- based studies have compared semi-quantitative with quan- titative DCE-MRI to determine which better reflects the perfusion condition in OP. In our ...
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Preliminary study of CT in combination with MRI perfusion imaging to assess hemodynamic changes during angiogenesis in a rabbit model of lung cancer
... between perfusion parameters and pathological measurements at an early stage, because of differences in the time points when CT and MRI scans were performed and the times when pathology measurements were ...
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Brain perfusion in dementia with Lewy bodies and Alzheimer’s disease: an arterial spin labeling MRI study on prodromal and mild dementia stages
... relative perfusion in prodromal patients are presented in Table 2 and Fig ...relative perfusion in pro ...of perfusion in the right temporal and anterior insula, whereas the left supe- rior frontal ...
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