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APPAREIL ET PROCÉDÉ PERMETTANT D'INFLUENCER ET/OU DE DÉTECTER DES PARTICULES MAGNÉTIQUES DANS UN CHAMP D'OBSERVATION
专利权人:
Koninklijke Philips Electronics N.V.;Philips Intellectual Property & Standards GmbH
发明人:
申请号:
EP10752424.1
公开号:
EP2475297A1
申请日:
2010.08.16
申请国别(地区):
EP
年份:
2012
代理人:
摘要:
The present invention relates to an apparatus (100) for influencing and/or detecting magnetic particles in a field of view (28), wherein the field of view (28) comprises at least one sub field of interest covering at least a portion of an object of interest containing 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 the field of view (28), a control unit (150) for controlling a signal receiving unit (140) comprised in the receiving means for acquiring a set of high resolution detection signals and a set of low resolution detection signals, wherein the set of high resolution detection signals depends on the magnetization of at least one subfield of interest and the set of low resolution detection signals depends on the magnetization of at least one adjacent subfield being arranged adjacent to the at least one subfield of interest, and a reconstruction unit (152) for reconstructing a particle distribution quantity depending on the set of high resolution detection signals and the set of low resolution detection signals. The present invention further relates to a corresponding method as well as to a computer program.Cette invention concerne un appareil (100) permettant d'influencer et/ou de détecter des particules magnétiques dans un champ d'observation (28), ledit champ d'observation (28) comprenant au moins un champ d'intérêt intermédiaire couvrant au moins une partie d'un objet d'intérêt contenant des particules magnétiques. L'appareil (100) applique le principe connu d'imagerie des particules magnétiques (MPI) et comprend un système de sélection qui génère un champ de séle
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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