Assessment of Glycosaminoglycan Content of Lumbar …
CEST and WASSR images were motion-corrected using a diffeomorphic image registration approach incorporated in the prototype software fMRLung (Siemens Healthcare Erlangen Germany) The following data analysis was performed using in-house developed MATLAB software (The Mathworks Inc Natick MA Rb) A reduction of image …
Quantitative magnetic susceptibility mapping without phase …
Feb · WASSR uses direct saturation of water protons as a function of frequency irradiation offset to generate frequency maps without phase wraps which can be combined with any image or spectroscopy acquisition By utilizing a series of fast short-echo-time direct saturation images with multiple radiofrequency offsets a frequency correction for
(PDF) SEGUE a Speedy rEgion-Growing algorithm for
Jun · PDF On Jun A Karsa and others published SEGUE a Speedy rEgion-Growing algorithm for Unwrapping Estimated phase Find read and cite all the research you need on ResearchGate
A comparison of static and dynamic ∆B mapping methods for correction
Mar · In WASSR a matching CEST pulse sequence is acquired as a prescan but with low saturation power and targeting only a narrow range of offsets around ppm with high spectral resolution Alternatively a prescanned ∆B map can be obtained from the phase difference of at least two gradient-echo images acquired at different echo times …
A comparison of static and dynamic ∆B mapping methods for - PubMed
Purpose To assess the performance in the presence of scanner instabilities of three dynamic correction methods which integrate ∆B mapping into the chemical exchange saturation transfer (CEST) measurement and three established static ∆B -correction approaches Methods A homogeneous phantom and five healthy volunteers were …
Nanophosphors synthesized by the water-assisted solid …
Nov · We have recently developed a novel soft chemical synthesis method named water-assisted solid-state reaction (WASSR) method which can be synthesized at low temperatures below °C We further demonstrated the effect and availability of this method on the synthesis process for ceramic oxide materials In this paper we review …
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Synthesis and optical properties of CsPbBr - RSC …
Green-emitting Cs PbBr nanocrystals were synthesized by the water-assisted solid-state reaction method for the first time Although CsPbBr phases were observed in the X-ray diffraction (XRD) patterns of the perovskite nanocrystal samples as impurities the XRD patterns of the samples could be well indexed to the trigonal Cs PbBr structure The …
Exploring a New Approach for Measuring Water Vapor on …
Jul · The WASSR team is building the first active terahertz radar sensor that uses its own GHz signal source to measure water vapor in a planetary environment such as Mars Some technological advances of WASSR s design newly developed in the last year include a transmitter capable of providing more than mW of continuous power a …
Keyhole chemical exchange saturation transfer - Wiley …
Jan · The B shift calculated by WASSR over all the phantoms ranged from − to Hz Therefore WASSR data acquired at full resolution ( × ) was also applied for correction of the reconstructed data The mean and standard deviation in CEST contrast (WASSR corrected) from the full resolution dataset are used as a "gold standard "
Longitudinal GluCEST MRI Changes and Cerebral Blood Flow in - Hindawi
Nov · Many of the focal neurological symptoms associated with Alzheimer x s disease (AD) are due to synaptic loss Glutamate chemical exchange saturation transfer (GluCEST) magnetic resonance imaging (MRI) is a candidate method to assess synaptic dysfunction We assessed chronological changes in GluCEST in a …
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In vivo imaging of phosphocreatine with artificial neural …
Feb · The B map was obtained via the WASSR method in which offsets from − to ppm were collected with acquisition parameters and geometry identical to other CEST experiments The
Water saturation shift referencing (WASSR) for chemical …
Apr · WASSR shift maps and quantification of glycoCEST MTR asym as a function of number of WASSR points for the glycogen phantom WASSR data initially acquired with points within ppm (± ppm) were rearranged with three sets of WASSR data as follows four points within ppm eight points within ppm and points within …
Keyhole Chemical Exchange Saturation Transfer - PMC
Jan · Regarding your first question Poses are currently expected to be in base You can transform a pose from ee link to base using ROS tf system and then send that to the controller However I think that this should be handled by the controller please see my corresponding issue Regarding your second question Keep in mind that base and …
Water saturation shift referencing (WASSR) for chemical …
Jun · WASSR shift maps and quantification of glycoCEST MTR asym as a function of number of WASSR points for the glycogen phantom WASSR data initially acquired with thirty-three points within ppm (± ppm) were rearranged with three sets of WASSR data as following four points within ppm eight points within ppm and sixteen points
Water Assisted Solid State Reaction
WASSR - Water Assisted Solid State Reaction Looking for abbreviations of WASSR It is Water Assisted Solid State Reaction Water Assisted Solid State Reaction listed as WASSR Water Assisted Solid State Reaction - How is Water …
WAter Saturation Shift Referencing (WASSR) for chemical …
Chemical exchange saturation transfer (CEST) is a contrast mechanism exploiting exchange-based magnetization transfer (MT) between solute and water protons CEST effects compete with direct water saturation and conventional MT processes and generally
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An overview of CEST MRI for non-MR physicists - EJNMMI …
Aug · The search for novel image contrasts has been a major driving force in the magnetic resonance (MR) research community in order to gain further information on the body s physiological and pathological conditions Chemical exchange saturation transfer (CEST) is a novel MR technique that enables imaging certain compounds at …
Improvement of water saturation shift referencing by …
Purpose To optimize B-field inhomogeneity correction for chemical exchange saturation transfer (CEST) imaging by investigating different water saturation shift referencing (WASSR) Z-spectrum shapes and different frequency correction techniques Methods WASSR Z-spectra were simulated for different B-fields and pulse durations (PD)
US Patent Application for MRI METHOD FOR - Justia …
Jan · A WASSR data acquisition method may be used with a minimal set of sample points e g to to measure the field map frequency at a voxel for which it is known based on the reference scan that it must be close to zero The offset that needs to be added to the field map may be calculated from the reference scan using the WASSR measurement
Improvement of water saturation shift referencing by
Jul · The first volunteer underwent an MRI examination of the brain Signal reception was performed with a -channel birdcage head coil The MR protocol (protocol ) included a localizer a CEST sequence for APT-CEST imaging two WASSR data acquisitions with different B -amplitudes of the Gaussian-shaped presaturation pulse and to differentiate …
Water saturation shift referencing (WASSR) for chemical …
Jun · Europe PMC is an archive of life sciences journal literature
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SUBMILLIMETER WAVE DIFFERENTIAL ABSORPTION …
Nov · Many of the focal neurological symptoms associated with Alzheimer x s disease (AD) are due to synaptic loss Glutamate chemical exchange saturation transfer (GluCEST) magnetic resonance imaging (MRI) is a candidate method to assess synaptic dysfunction We assessed chronological changes in GluCEST in a …