Patient alignment system for NMR studies

Details Patient alignment system for NMR studies Patient alignment system for NMR studies

1983-11-10

1986-12-16

Kreitman, Stephen A.

Electricity: measuring and testing

Particle precession resonance

Spectrometer components

324300, G01R 3320

Patent

active

046299890

ABSTRACT:
A patient alignment system utilizes stationary and mobile light fan beams for precisely positioning a patient for performing NMR studies. One assembly of preferably laser light sources is utilized to create a visible reference point for aligning a patient anatomical reference in the staged scan position. The reference position is then used as a reference to locate the scan volume and to automatically translate the patient so that the scan volume is in the optimum homogeneous region of the polarizing magnetic field. Two laser assemblies, each separately operable to provide a vertically movable laser fan beam, are used to locate a vertical reference point. The vertical reference point is used to retrospectively reconstruct images centered in the field of view. The vertical reference point is used to obtain prospectively image data to reconstruct magnified zoom or unmagnified images offset from the isocenter.

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