Magnetic resonance signal receiving method and apparatus and magnetic resonance imaging apparatus
AssigneeGE Yokogawa Medical Systems, Limited
InventorTetsuo Ogino
Life of this patent
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Abstract
In order to provide a magnetic resonance signal receiving method and apparatus for performing imaging with good quality and an magnetic resonance imaging apparatus employing such a magnetic resonance signal receiving apparatus, gradient magnetic fields Gs1k and Gs2k for dephasing spins are applied with their strengths varied after each spin echo is received in line scanning.
Claims16
A magnetic resonance signal receiving method for receiving a spin echo resulting from spine that lie in two slices intersecting each other and that are excited by 90° and 180° RF pulses, respective, while translating the intersection in an image space, said method comprising the step art of:
- applying a different killer gradient magnetic field after each said resetting spin echo is received so as to dephased the spin excited by said 90° and 180° pulses, each said different killer gradient magnetic field having a different strength so as to prevent rewinding of a spin excited by a prior 90° RF pulse, whereby artifacs are avoided.
A magnetic resonance signal receiving apparatus for receiving a spin echo resulting from spins that lie in two slices intersecting each other and that are excited by 90° and 180° RF pulses, respectively, while translating the intersection in an image space, said apparatus comprising:
- means for applying a different killer gradient magnetic field after each said resulting spin echo is received so as to dephase the spins excited by said 90° and 180° RF pulses, each said different killer gradient magnetic field having a different strength so as to prevent rewinding of a spin excited by a prior 90° RF pulse, whereby artifacts are avoided.
A magnetic resonance imaging apparatus for periodically receiving a spin echo resulting from spins that lie In two slices intersecting each other and that are excited by 90° and 180° RF pulses, respectively, while translating the intersection in an image space, and producing an image based on said received spin echo, said apparatus comprising:
- means for applying a different killer gradient magnetic field after each said resulting spin echo is received ea as to dephased the spins excited by said 90° and 180° RF pulses, each of said different killer gradient magnetic field having a different strength so as to prevent rewinding of a spin excited by a prior 90° RF pulse, whereby artifacts are avoided.
A magnetic resonance imaging method for periodically receiving a spin echo resulting from spins that lie in two slices intersecting each other and that are excited by 90° and 180° RF pulses, respectively, while translating the intersection in an image space, and producing an image based on said received spin echo, said method comprising the step of:
- applying a different killer gradient magnetic field after each said resulting spin echo is received so as to dephased the spins excited by said 90° and 180° RF pulses, each said different killer gradient magneti field having a different strength so as to prevent rewinding of a spin excited by a prior 90° RF pulse, whereby artifacts are avoided.
Dependencies are inferred from the claim text.