Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1129/CHENP/2012 A
(19) INDIA
(22) Date of filing of Application :03/02/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : APPARATUS AND METHOD FOR DETERMINING AT LEAST ONE ELECTROMAGNETIC
QUANTITY
(51) International classification :A61B5/05
(31) Priority Document No :09167496.0
(32) Priority Date :07/08/2009
(33) Name of priority country :EPO
(86) International Application No
Filing Date
(87) International Publication No : NA
(61) Patent of Addition to Application
:NA
Number
:NA
Filing Date
(62) Divisional to Application Number
Filing Date
:PCT/IB2010/053497
:02/08/2010
:NA
:NA
(71)Name of Applicant :
1)KONINKLIJKE PHILIPS ELECTRONICS N.V.
Address of Applicant :GROENEWOUDSEWEG 1
EINDHOVEN 5621 BA NETHERLANDS
(72)Name of Inventor :
1)VERNICKEL Peter
2)KATSCHER Ulrich
3)GLEICH Bernhard
4)RAHMER Jurgen Erwin
(57) Abstract :
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.
No. of Pages : 42 No. of Claims : 15
The Patent Office Journal 21/06/2013 13754