发明名称 |
System and method for controlling calibration and delay phases of parallel, contrast-enhanced magnetic resonance imaging |
摘要 |
A system and method for performing parallel magnetic resonance angiography includes controlling operation of a magnetic gradient system and an RF system to perform a calibration data pulse sequence to begin acquiring calibration data for use in a parallel imaging reconstruction process after receiving an indication that the subject has received a dose of a contrast agent. The acquisition of the calibration data is discontinued before the contrast agent reaches a peak concentration within a region of interest (ROI) of the subject and operation of the magnetic gradient system and RF system is controlled to perform an imaging pulse sequence in accordance with a parallel imaging acquisition to begin acquiring image data from the ROI. The image data is reconstructed into an image of the ROI using the calibration data. |
申请公布号 |
US9594143(B2) |
申请公布日期 |
2017.03.14 |
申请号 |
US201213601417 |
申请日期 |
2012.08.31 |
申请人 |
Mayo Foundation for Medical Education and Research |
发明人 |
Riederer Stephen J. |
分类号 |
A61B5/00;G01R33/563;A61B5/05;G01R33/561 |
主分类号 |
A61B5/00 |
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 calibration data pulse sequence to begin acquiring calibration data for use in a parallel imaging reconstruction process after receiving an indication that the subject has received a dose of a contrast agent;discontinue acquisition of the calibration data before the contrast agent reaches a peak concentration within a region of interest (ROI) of the subject;control operation of the magnetic gradient system and RF system to perform an imaging pulse sequence in accordance with a parallel imaging acquisition to begin acquiring image data from the ROI; andreconstruct the image data into an image of the ROI using the calibration data. |
地址 |
Rochester MN US |