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|1. (WO2018082026) SPHERICAL K-SPACE COLLECTION METHOD AND APPARATUS FOR THREE-DIMENSIONAL DYNAMIC MAGNETIC RESONANCE IMAGING|
|Applicants:||SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY
|Title:||SPHERICAL K-SPACE COLLECTION METHOD AND APPARATUS FOR THREE-DIMENSIONAL DYNAMIC MAGNETIC RESONANCE IMAGING|
Proposed are a spherical k-space collection method and apparatus for three-dimensional dynamic magnetic resonance imaging. The method comprises: establishing a spherical k-space model and determining a collection track code of an echo signal in the model, wherein the echo signal is: in the sphere, a radial half-echo signal from a spherical centre to a spherical surface, or a diametral full-echo signal through the spherical centre, and an elevation angle θ and an azimuth angle φ of the echo signal are obtained by means of calculation according to the two-dimensional golden section ratio; and inputting the collection track code into a magnetic resonance imaging system, and collecting k-space data for filling the spherical k-space model according to the collection track code. The method can achieve the continuous collection of three-dimensional k-space data, and make the collected k-space data be approximately and uniformly distributed within any time window, thereby being able to achieve continuous three-dimensional dynamic image reconstruction and high-temporal-resolution three-dimensional dynamic magnetic resonance imaging.