发明名称 |
METHOD FOR DETERMINING PHASE-CORRECTED AMPLITUDES IN NMR RELAXOMETRIC IMAGING |
摘要 |
<p>Accurate determinations of the NMR spin-spin relaxation parameters provided by multiple echoes imaging experiments (MSME) require first of all phase corrected amplitudes to deal with. The invention relates to a simple and robust algorithm for the phase correction procedure, to be applied following FFT reconstruction and prior to any fitting decay method. The algorithm is a pixel-by-pixel algorithm comprising the steps of determining a linear fit from complex amplitude values, defining a rotation angle with respect to the real axis, optimizing the angle, and applying a rotation to the amplitudes of the considered pixel through all echo images. The algorithm provides phase corrected amplitudes for real-phased images, allowing correct image algebra and measurements for T2 constants from any specific ROI on the image.</p> |
申请公布号 |
WO2008116846(A1) |
申请公布日期 |
2008.10.02 |
申请号 |
WO2008EP53434 |
申请日期 |
2008.03.20 |
申请人 |
INSTITUT CURIE;INSERM-INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE;MISPELTER, JOEL;LUPU, MICHAELA |
发明人 |
MISPELTER, JOEL;LUPU, MICHAELA |
分类号 |
G01R33/50 |
主分类号 |
G01R33/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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