Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system
Reexamination Certificate
2008-05-06
2008-05-06
Shrivastav, Brij (Department: 2859)
Electricity: measuring and testing
Particle precession resonance
Using a nuclear resonance spectrometer system
C324S318000
Reexamination Certificate
active
07368912
ABSTRACT:
An MRI configuration comprising an MRI phantom positioned in a volume under investigation, wherein the MRI phantom has a chamber disposed in a housing and filled with a liquid, in which a gas bubble forms, the liquid nuclei which have an NMR relaxation time T1of between 100 ms and 20 s, is characterized in that the chamber the MRI phantom a main chamber and a partial chamber, the main chamber being delimited from the partial chamber such that the gas bubble can completely enter the partial chamber due to its buoyancy by changing the spatial orientation of the MRI phantom in the gravitation field, and remains in the partial chamber in a measurement orientation of the MRI phantom due to its buoyancy. This eliminates imaging artefacts despite the presence of a gas bubble.
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Bruker BioSpin MRI GmbH
Shrivastav Brij
Vargas Dixomara
Vincent Paul
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