Spectroscopic Imaging
A Compton Camera for Spectroscopic Imaging from 100keV to 1MeV
... This same device was improved in 1993 at the University of Michigan by replacing the Anger camera with 16 NaI(Tl) detectors, each 19.1mm in diameter by 50.8mm in length [19-20]. These detectors were arranged in an ...
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Reproducibility of proton MR spectroscopic imaging findings
... regional contributions to the CV. The most evi- dent result was that NAA/Cr almost always showed the best overall CV of the three ratios (six of eight), and that the CV of Cho/Cr was usually smaller than the one of ...
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Three dimensional Proton MR Spectroscopic Imaging of Premature and Term Neonates
... The SD of the N-acetylaspartate:choline, N-ace- tylaspartate:creatine, and choline:creatine ratios (Fig 6) showed topological and age-dependent var- iations and were highest in the white matter regions of the premature ...
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Compressed sensing to accelerate magnetic resonance spectroscopic imaging: evaluation and application to 23Na imaging of mouse hearts
... Resonance Spectroscopic Imaging (MRSI) al- lows non-invasive investigation of regional metabolic processes in vivo, but suffers from long scan-times due to low metabolite concentrations, slow spatial ...
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Glioma Grading: Sensitivity, Specificity, and Predictive Values of Perfusion MR Imaging and Proton MR Spectroscopic Imaging Compared with Conventional MR Imaging
... Multivoxel 2D proton chemical shift imaging (CSI) or spec- troscopic imaging was performed after administration of gado- pentetate dimeglumine. This is the standard protocol at our institution, as the ...
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Quantitative Proton MR Spectroscopic Imaging in Acute Disseminated Encephalomyelitis
... MR imaging and quantitative proton MR spectroscopic imaging (MRSI) findings of a 4-year-old boy with acute disseminated encephalomyelitis (ADEM) are re- ...MR imaging and MRSI abnormalities ...
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Preliminary Assessment of Turbo Spectroscopic Imaging for Targeting in Brain Biopsy
... this spectroscopic information to help define an op- timal site from which to obtain a biopsy ...shift imaging (CSI) is a technique whereby spectra are spatially ...Turbo spectroscopic imaging ...
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Evaluation of Normal Changes in Pons Metabolites due to Aging Using Turbo Spectroscopic Imaging
... BACKGROUND AND PURPOSE: To date, MRS study of both normal and pathologic brains have focused mainly on the supratentorial regions; few studies have investigated the infratentorial regions. However, the pons, an important ...
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Regional Differences and Metabolic Changes in Normal Aging of the Human Brain: Proton MR Spectroscopic Imaging Study
... contrast, imaging has significant ad- vantages in terms of spatial resolution, efficiency of data acquisition, and mapping the distribution of cerebral metabolite ...
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Fast Detection of Diffuse Axonal Damage in Severe Traumatic Brain Injury: Comparison of Gradient Recalled Echo and Turbo Proton Echo Planar Spectroscopic Imaging MRI Sequences
... Echo-planar imaging (EPI) is an ultrafast MR im- aging technique that uses a train of oscillating fre- quency-encoding gradients to traverse k-space, en- abling the rapid acquisition of ...sion imaging of ...
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Electrorotation: A Spectroscopic Imaging Approach to Study the Alterations of the Cytoplasmic Membrane
... This review article is mainly focused on the great potentials and flexibility of electro rotation. Trypsinization, necessary to detach the cells from the substrate, might actually influence the native membrane ...
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Volumetric Proton Spectroscopic Imaging of Mild Traumatic Brain Injury
... The imaging protocol was approximately 90 ...MR imaging, followed by an axial double spin-echo acquisition (TR/TE ⫽ 5000/20 and 80/1; 47 sections of 3-mm thickness) and a coronal/axial gradient-echo ...
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Investigation of intervertebral disc degeneration using multivariate FTIR spectroscopic imaging
... In spectroscopic data matrices linear or near-linear relationships within a set of variables, also referred to as co-linearity, can affect the deconvolution power and stability of the MCR-ALS ...
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Reproducibility of Proton MR Spectroscopic Imaging (PEPSI): Comparison of Dyslexic and Normal Reading Children and Effects of Treatment on Brain Lactate Levels during Language Tasks
... MR imaging (fMRI) has been established as an ef- fective tool to measure brain activation on the basis of blood oxygenation level dependent (BOLD) contrast mechanisms during language processing and dyslexia ...MR ...
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An alternative means of spectroscopic imaging for superficial wound healing process monitoring
... define a straight line because of the near proximity between these wavelength pairs in the graph of attenuation, A, versus absorption coefficient, µ a , which renders a more precise representation of the Modified Lambert ...
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Electronic structure of the cuprate superconducting and pseudogap phases from spectroscopic imaging STM
... Imaging the differential tunneling conductance d I / d V ( r , E = eV ) ≡ g ( r , E = eV ) with atomic resolution and register, and as a function of both location r and electron energy E, is referred to as SI-STM. ...
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Proton MR Spectroscopic Imaging in Pelizaeus Merzbacher Disease
... MRS imaging appears to be helpful in determining the spatial distribution and severity of PMD-induced metabolic abnormalities, which may be related to the underlying pathophysiology of the ...largest ...
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Analysis of the composition of latent fingermarks by spectroscopic imaging techniques
... Spectrometry Imaging (DESI- MSI) (Ifa e ta l, 2008), Secondary Ion - Mass Spectrometry (SIMS) (Bright e ta l, 2012) and Matrix Assisted Laser Desorption Ionisation - Mass Spectrometry Imaging (MALDI-MSI) ...
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Changes in Fiber Integrity, Diffusivity, and Metabolism of the Pyramidal Tract Adjacent to Gliomas: A Quantitative Diffusion Tensor Fiber Tracking and MR Spectroscopic Imaging Study
... We examined 20 patients (age range, 24 –72 years; mean age ⫾ SD, 40.6 ⫾ 13.9 years) with untreated supratentorial gliomas of WHO grades II, III, or IV before surgery. Nine patients were female, and 8 patients experienced ...
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Simultaneous PET/MRI with 13C magnetic resonance spectroscopic imaging (hyperPET): phantom-based evaluation of PET quantification
... When MRI is not performed, no RF radiation is transmitted and the magnetic field is constant. Conversely, there is no fundamental change of state of the PET detector system between situations where imaging data is ...
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