Magnetic resonance imaging apparatus

摘要

A magnetic resonance imaging configuration to straighten and otherwise homogenize the field lines in the imaging portion, creating improved image quality. Through use of calibrated corrective coils, magnetic field lines can be manipulated to improve uniformity and image quality. Additionally, when the apparatus is composed of non-ferromagnetic materials, field strengths can be increased to overcome limitations of Iron-based systems such as by use of superconductivity. A patient positioning apparatus allows multi-positioning of a patient within the calibrated and more uniform magnetic field lines.

主权项

1. A magnetic resonance imaging correction magnet system comprising:
a plurality of correction magnets, said correction magnets placed within a field of a magnetic resonance imaging system, said field containing inhomogeneities within a patient-receiving portion thereof, and said correction magnets substantially correcting said inhomogeneities and straightening field lines associated with said field within said patient-receiving portion, wherein said correction magnets are coils, and wherein at least one of said correction magnets being flexibly positionable to correct said inhomogeneities within said field.