The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2011
Filed:
Feb. 11, 2009
Gordon D. Demeester, Wickliffe, OH (US);
Michael A. Morich, Mentor, OH (US);
Kevin C. Mcmahon, Mentor, OH (US);
Jerome J. Griesmer, Mentor, OH (US);
Gordon D. DeMeester, Wickliffe, OH (US);
Michael A. Morich, Mentor, OH (US);
Kevin C. McMahon, Mentor, OH (US);
Jerome J. Griesmer, Mentor, OH (US);
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A positron emission tomography (PET) detector ring comprising: a radiation detector ring comprising scintillators () viewed by photomultiplier tubes (); and a magnetic field shielding enclosure () surrounding sides and a back side of the annular radiation detector ring so as to shield the photomultiplier tubes of the radiation detector ring. Secondary magnetic field shielding (') may also be provided, comprising a ferromagnetic material having higher magnetic permeability and lower magnetic saturation characteristics as compared with the magnetic field shielding enclosure, the second magnetic field shielding also arranged to shield the photomultiplier tubes of the radiation detector ring. The secondary magnetic field shielding may comprise a mu-metal. The PET detector ring may be part of a hybrid imaging system also including a magnetic resonance (MR) scanner, the PET detector ring being arranged respective to the MR scanner such that a stray magnetic field from the MR scanner impinges on the PET detector ring.