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Non-invasive temperature mapping using temperature …
Mar · Both the T-WASSR spectra and the H NMR spectra show that the lipid PRF is insensitive to temperature changes allowing a determination of absolute temperature using the lipid PRF as an internal reference Similar to water PRF mapping fitting the fat saturation spectral images pixel-by-pixel allows mapping the lipid PRF at high spatial
Field map from B reference scan and WASSR scan - Google …
A medical imaging system ( ) is provided The medical imaging system ( ) includes a processor () Execution of the machine-executable instructions () causes the processor () to receiving magnetic resonance data wherein the magnetic resonance data comprises B field data () for a reference scan of a plurality of voxels and water …
USA - Frequency referencing for chemical …
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Water saturation shift referencing (WASSR) for chemical …
Jun · Europe PMC is an archive of life sciences journal literature
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 …
Entries in Wassr category - すぎゃーんメモ
Jul · びMeCabをってみた。 MacにてText MeCabをう - すぎゃーんメモ をってなnickをってWassrにするまで - すぎゃーんメモ はやのに「ゲレンデがとけるほど」をする。 kohmingサブルーチンにの …
Non-invasive temperature mapping using temperature …
Mar · Europe PMC is an archive of life sciences journal literature https orcid org
Quantitative magnetic susceptibility mapping without phase …
Oct · 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
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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 …
Quantitative magnetic susceptibility mapping without phase …
Oct · Quantitative magnetic susceptibility mapping without phase unwrapping using WASSR
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
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
US Patent for Frequency referencing for chemical exchange …
Sep · A water saturation shift referencing (WASSR) technique performed using a magnetic resonance scanner comprises acquiring a spatial map of Z spectra that encompass the water center frequency using sufficiently low saturation power and sufficiently short duration selected such that symmetry of the Z spectra is not obscured by …
Magnetic Resonance gagCEST Imaging of the Human …
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 …
USA - Google Patents
An embodiment in accordance with the present invention provides a method of non-invasively detecting and imaging temperature or temperature changes by assessing the temperature induced shifts in the saturation spectrum of water using MRI namely saturation shift referencing This procedure includes the MRI procedures to assess water saturation …
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
Improvement of water saturation shift referencing by …
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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 …
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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 https orcid org