Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1986-12-05
1989-04-04
Levy, Stewart J.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
324307, 378207, G01R 3320
Patent
active
048189430
ABSTRACT:
A phantom for evaluating and calibrating a nuclear magnetic resonance imaging system. The phantom includes a cylindrical housing having a central axis and defining a hollow region therein. The phantom also includes a first conical wall member and a second conical wall member which are congruous to each other and secured to one another at their respective bases. The conical wall members are disposed within and separate the hollow region into a first region outside of the conical wall members and a second region within the conical wall members. The first region is filled with a first predetermined fluid and the second region is filled with a second predetermined fluid. Preferably each conical wall member is symmetrical about central axis and has its apex disposed along the central axis.
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Levy Stewart J.
New York University
O'Shea Kevin D.
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