发明名称 |
Method for self-calibrated parallel magnetic resonance image reconstruction |
摘要 |
A method for producing a time-series of images of a subject with a magnetic resonance imaging (MRI) system is provided. The MRI system is used to acquire a time-series undersampled k-space data set, in which a selected number of k-space data subsets in the time-series data set includes both image data and calibration data. Moreover, the calibration data in each of these selected number of k-space data subsets includes a portion of a desired total amount of calibration data. For example, each of these selected number of k-space data subsets include calibration data that is acquired by sampling a different partition of a calibration data sampling pattern. A time-series of images of the subject is then produced by reconstructing images of the subject from the acquired time-series of undersampled k-space data sets. These images are substantially free of undersampling artifacts. |
申请公布号 |
US9018952(B2) |
申请公布日期 |
2015.04.28 |
申请号 |
US201213478017 |
申请日期 |
2012.05.22 |
申请人 |
Mayo Foundation for Medical Education and Research |
发明人 |
Riederer Stephen J |
分类号 |
G01V3/00;G01R33/561;G01R33/563 |
主分类号 |
G01V3/00 |
代理机构 |
Quarles & Brady, LLP |
代理人 |
Quarles & Brady, LLP |
主权项 |
1. A magnetic resonance imaging (MRI) system, comprising:
a magnet system configured to generate a polarizing magnetic field about at least a portion of a subject arranged in the MRI system; a magnetic gradient system including a plurality of magnetic gradient coils configured to apply at least one magnetic gradient field to the polarizing magnetic field; a radio frequency (RF) system configured to apply an RF field to the subject and to receive magnetic resonance signals therefrom in parallel; a computer system programmed to:
control operation of the magnetic gradient system and RF system to perform a pulse sequence in accordance with a parallel imaging acquisition to acquire a time-series undersampled k-space data set that include both an image data set and a calibration data set; and reconstruct the image data set into a time-series of images of the subject using the calibration data set. |
地址 |
Rochester MN US |