发明名称 |
APPARATUS AND METHOD FOR DETERMINING AT LEAST ONE ELECTROMAGNETIC QUANTITY |
摘要 |
The present invention relates to an apparatus (100) for determining at least one electromagnetic quantity characterizing an electromagnetic property of an object, in particular a human body, wherein said object contains magnetic particles. The apparatus (100) applying the known principle of Magnetic Particle Imaging (MPI) comprises selection means for generating a magnetic selection field (50) having the known field pattern showing a field free point (FFP), drive means for changing the position in space of the FFP by means of a magnetic drive field, receiving means for acquiring detection signals depending on the magnetization of the magnetic particles within a field of view (28) and a reconstruction unit (152) for reconstructing a particle distribution quantity depending on the detection signals. The apparatus (100) further comprises a control unit (150) for controlling the receiving means for acquiring a first set of detection signals corresponding to a first drive field frequency and a second set of detection signals corresponding to a second drive field frequency, with both drive field frequencies differing from each other. The control unit (15) further controls the reconstruction unit (152) for reconstructing a first particle distribution quantity depending on the first set of detection signals and a second particle distribution quantity depending on the second set of detection signals. The apparatus (100) further comprises a determination unit (160) for determining the electromagnetic quantity depending on the first and second particle distribution quantity. The present invention further relates to a corresponding method as well as to a computer program. |
申请公布号 |
EP2461743(A1) |
申请公布日期 |
2012.06.13 |
申请号 |
EP20100747288 |
申请日期 |
2010.08.02 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH |
发明人 |
VERNICKEL, PETER;KATSCHER, ULRICH;GLEICH, BERNHARD;RAHMER, JUERGEN, ERWIN |
分类号 |
A61B5/00;A61B5/05 |
主分类号 |
A61B5/00 |
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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