发明名称 |
Non-Contrast-Enhanced 4D MRA Using Compressed Sensing Reconstruction |
摘要 |
A reconstructed image is rendered of a patient by a processor from a set of undersampled MRI data by first subtracting two repetitions of the acquired data in k-space to create a third dataset. The processor reconstructs the image by minimizing an objective function under a constraint related to the third dataset, wherein the objective function includes applying a Karhunen-Loeve Transform (KLT) to a temporal dimension of data. The objective function under the constraint is expressed as arg minf{∥︀phi(f)∥︀1 subject to∥︀Af-y∥︀2@epsilon}. The reconstructed image is an angiogram which may be a 4D angiogram. The angiogram is used to diagnose a vascular disease.
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申请公布号 |
US2013121550(A1) |
申请公布日期 |
2013.05.16 |
申请号 |
US201113284143 |
申请日期 |
2011.10.28 |
申请人 |
CHANG TI-CHIUN;NADAR MARIAPPAN S.;GUEHRING JENS;ZENGE MICHAEL;BLOCK KAI TOBIAS;SCHMITT PETER;MUELLER EDGAR;SIEMENS CORPORATION |
发明人 |
CHANG TI-CHIUN;NADAR MARIAPPAN S.;GUEHRING JENS;ZENGE MICHAEL;BLOCK KAI TOBIAS;SCHMITT PETER;MUELLER EDGAR |
分类号 |
G06T11/00;A61B5/055 |
主分类号 |
G06T11/00 |
代理机构 |
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