Electricity: measuring and testing – Particle precession resonance – Spectrometer components
Patent
1994-05-25
1995-12-05
O'Shea, Sandra L.
Electricity: measuring and testing
Particle precession resonance
Spectrometer components
324322, G01R 3328
Patent
active
054732522
ABSTRACT:
A high-frequency apparatus for nuclear spin tomography includes a high-frequency transmitter for exciting nuclear spin in a body to be imaged and a high-frequency receiver for detecting B-field components resulting from the nuclear spin. The high-frequency receiver includes a galvanically-separated local coil device having two antenna loops between which an amplifier unit is connected. The local coil device radiates new B-field components in response to the original B-field components caused by the nuclear spin excitation, with the new B-field components oriented substantially orthogonal to the original B-field components. The new B-field components are then received by an external receiving antenna for subsequent signal processing, ultimately resulting in an image of the body.
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ntz Archiv, vol. 11, No. 5 (1989), pp. 237-243, Wilhelm Durr et al.: Hochfrequenzsysteme fur die Kernspintomografie (High Frequency System for Nuclear Spin Tomography).
Magnetic Resonance in Medicine, vol. 4 (1987) pp. 179-184, James S. Hyde et al.: Quadrature Detection Surface Coil.
Renz Wolfgang
Vester Markus
Mah Raymond Y.
O'Shea Sandra L.
Siemens Aktiengesellschaft
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