Magnetic resonance magnification imaging
AssigneeThe United States of America, as represented by the Secretary, Department of Health and Human Services
InventorJun Shen
Life of this patent
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Abstract
One aspect of the present disclosure provides an imaging method including: specifying an imaging focus region on a subject to be imaged, applying radiofrequency pulses to the subject to interact with a magnetic field gradient, wherein the radiofrequency pulses successively bend magnetization phases of respective electromagnetic signals from the specified imaging focus region, resulting in magnified pixel data, and generating a magnified image of the imaging focus region based on the magnified pixel data.
Claims16
An imaging method comprising:
- specifying an imaging focus region on a subject to be imaged;
- applying radiofrequency pulses to a region of interest of the subject to interact with a magnetic field gradient, wherein the radiofrequency pulses successively bend magnetization phases of respective electromagnetic signals from the specified imaging focus region, resulting in magnified pixel data, the radiofrequency pulses being determined by inverting a mathematical transform that relates transverse magnetization to the radiofrequency pulses as a function of the magnetic field gradient over space;
- and
- generating a magnified image of the imaging focus region based on the magnified pixel data.
A non-transitory computer readable medium containing program instructions executable by a processor, the computer readable medium comprising:
- program instructions that specify an imaging focus region on a subject to be imaged;
- program instructions that determine radiofrequency pulses by inverting a mathematical transform that relates transverse magnetization to the radiofrequency pulses as a function of a magnetic field gradient over space;
- program instructions that control application of the radiofrequency pulses to a region of interest of the subject to interact with the magnetic field gradient, wherein the radiofrequency pulses successively bend magnetization phases of respective electromagnetic signals from the specified imaging focus region, resulting in magnified pixel data;
- and
- program instructions that generate a magnified image of the imaging focus region based on the magnified pixel data.
A magnetic resonance imaging device comprising:
- a magnetic field gradient controller programmed to control operation of a magnetic field gradient amplifier to alter a spinning frequency of atomic nuclei within a subject;
- a radio frequency pulse controller programmed to control operation of a radiofrequency transmitter to apply radiofrequency pulses to a region of interest within the subject;
- an analog/digital signal converter programmed to convert analog signals received by a radiofrequency receiver coil;
- and
- an imaging sequence controller programmed to:
- specify an imaging focus region on the subject;
- determine radiofrequency pulses by inverting a mathematical transform that relates transverse magnetization to the radiofrequency pulses as a function of a magnetic field gradient over space;
- control application of the radiofrequency pulses to the region of interest of the subject to interact with a magnetic field gradient, wherein the radiofrequency pulses successively bend magnetization phases of respective electromagnetic signals from the specified imaging focus region, resulting in magnified pixel data;
- and
- generate a magnified image of the imaging focus region based on the magnified pixel data.
Dependencies are inferred from the claim text.