Method and device for obtaining magnetic resonance quantitative information map
An acquisition method, a technology of magnetic resonance, applied in the directions of diagnostic recording/measurement, medical science, diagnosis, etc., which can solve the problems of long data acquisition time, involuntary patient movement, troublesome quantitative analysis and diagnosis, etc.
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[0053] In order to clearly understand the specific implementation manners of the present application, technical terms used in the specific implementation manners of the present application will be described below.
[0054] T 1 Time is T when the magnetization vector on the vertical axis increases from 0 to 63% 1 The relaxation time (also known as the longitudinal magnetization vector).
[0055] T 2 The relaxation time is the time required for the transverse magnetization vector strength to decay from the maximum value to 37%.
[0056] The time is the time required for the magnetization vector intensity to decay from the maximum value to 37% after the faster phase dispersion due to factors such as magnetic field inhomogeneity when the transverse magnetization decays. less than tissue T 2 relaxation time.
[0057] for The reciprocal of , can also be used To measure the attenuation of the transverse magnetization vector strength.
[0058] Gradient echo (GRE, gradie...
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