发明名称 |
Method for non-contrast enhanced magnetic resonance angiography |
摘要 |
A method for non-contrast enhanced magnetic resonance angiography (MRA) of a three-dimensional (3D) volume of a subject having a vascular structure extending through the 3D volume and having flowing spins passing through vascular structure. The method includes applying at least one radiofrequency (RF) pulse to a first slice to label the flowing spins passing into a second slice located within the 3D volume adjacent to the first slice and acquiring imaging data from the second slice using a two-dimensional (2D) pulse sequence and sampling k-space using a non-Cartesian sampling pattern. The acquisition of the of the imaging data is repeated to acquire a series of second slices located across the 3D volume to acquire respective sets of imaging data spanning the 3D volume. The sets of imaging data is reconstructed into a time-series of image frames depicting the flowing spins passing through the vascular structure. |
申请公布号 |
US8744551(B2) |
申请公布日期 |
2014.06.03 |
申请号 |
US201213547699 |
申请日期 |
2012.07.12 |
申请人 |
Northshore University Healthsystem |
发明人 |
Koktzoglou Ioannis;Edelman Robert R. |
分类号 |
A61B5/05 |
主分类号 |
A61B5/05 |
代理机构 |
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代理人 |
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主权项 |
1. A method for non-contrast enhanced magnetic resonance angiography (MRA) of a three-dimensional (3D) volume of a subject having a vascular structure extending through the 3D volume and having flowing spins passing through vascular structure, the method comprising the steps of:
a) applying, with a magnetic resonance imaging (MRI) system, at least one radiofrequency (RF) pulse to a first slice to label the flowing spins passing into a second slice located within the 3D volume adjacent to the first slice; b) acquiring, with the MRI system, imaging data from the second slice using a two-dimensional (2D) pulse sequence and sampling k-space using a non-Cartesian sampling pattern; c) repeating steps a) and b) to acquire a series of second slices located across the 3D volume to acquire respective sets of imaging data spanning the 3D volume; and d) reconstructing the sets of imaging data into a time-series of image frames depicting the flowing spins passing through the vascular structure.
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地址 |
Evanston IL US |