Combined PET/MRT unit and method for simultaneously...

Details Combined PET/MRT unit and method for simultaneously... Combined PET/MRT unit and method for simultaneously...

2006-08-23

2011-12-06

Chen, Tse (Department: 3777)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C600S407000

Reexamination Certificate

active

08073525

ABSTRACT:
A combined PET/MRT unit is disclosed that includes a PET detector which is reduced by comparison with the prior art, and that consists, for example, of a PET detector with a polygonal arrangement of the detector elements or with a PET detector ring. The PET detector is reduced in an axial direction by comparison with the detectors of the prior art, as a result of which the costs for producing the expensive PET detectors are lowered. The reduction of the PET detector is possible because the MR measurement usually lasts longer than the PET measurement, and so a reduced PET detector can be used for the temporally sequential recording of a number of PET tomograms by mechanical displacement of the PET detector. Since the MR measurement lasts substantially longer, this mechanical displacement does not lead to a lengthening of the measuring time. The invention also relates to methods for simultaneously recording MR and PET tomograms in which the PET/MRT units according to the invention are used.

REFERENCES:
patent: 4939464 (1990-07-01), Hammer
patent: 7835782 (2010-11-01), Cherry et al.
patent: 2003/0090267 (2003-05-01), Rubashov
patent: 2006/0250133 (2006-11-01), Krieg et al.
patent: 10 2005 015 071 (2006-10-01), None
patent: WO 03/003038 (2003-01-01), None
German Office Action dated Jun. 27, 2006 for counterpart German Patent Application No. 10 2005 040 107.4-35.
PET camera CTI-951R-31 (ECAT 951).

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