hydrogen density

hydrogen density

An MRI term for the concentration of hydrogen atoms in water or in certain fat molecules within tissue. Initial MR signal amplitudes are directly related to the H+ density in the imaged tissue.
References in periodicals archive ?
The telescope called the Canadian Hydrogen Intensity Mapping Experiment, or CHIME, uses the digitized signals it collects to create a three dimensional map of hydrogen density to measure the expansion of the universe, (https://chime-experiment.
Beginning with the hydrogen density at the initial temperature and pressure, the tank is sized and the wall and dome thicknesses are calculated to estimate the composite tank mass and volume.
This is particularly due to the gravimetric and volumetric hydrogen density requirements in order to achieve a 300 mile cruising range.
01 % from 220 K to 1000 K with pressures up to 70 MPa, and from 255 K to 1000 K with pressures up to 120 MPa, although the estimated uncertainty of the resulting hydrogen density is 0.
As a simple hydrocarbon void of sulfur, methanol has a good hydrogen density.
The cleanliness, ease of storage, availability and hydrogen density of ammonia make it an ideal fuel, and HEC has filed 5 patents on its ammonia engines.
Information from the MRILab tool is further used to provide important fluid parameters such as Hydrogen density, fluid viscosity and gas/oil ratio (GOR) as well as enhance the formation evaluation provided by the MRIL-Prime(TM) logging tool.