Low-cost digital pet design
AssigneeKoninklijke Philips N.V.
InventorsShekhar DWIVEDI, Venudhar Rao HAJARI
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Abstract
A diagnostic imaging system utilizing a reduced crystal design pattern is utilized to image a subject and collect event data. The reduced crystal design pattern includes filled crystal locations and empty crystal locations. A processor accounts for empty crystal locations by selecting windows that include nearest neighbor filled crystal locations. The nearest neighbor filled crystal locations include event data which is averaged by the processor and assigned to the empty crystal location. A weighted average based on distance or event strength is incorporated.
Claims20
A nuclear imaging system comprising:
- a radiation detector having a regular array of detector pixel locations and including:
- radiation detector elements occupying some of the detector pixel locations of the regular array and
- unoccupied detector pixel locations of the regular array that are not occupied by radiation detector elements.
An imaging method comprising:
- acquiring radiation event data of a subject in an imaging region using at least one crystal module arranged around the imaging region, the module having scintillator crystals defining a regular array of detector pixels with some missing detector pixels;
- estimating radiation event data for the missing detector pixels;
- and
- reconstructing the combination of the acquired radiation event data and the estimated radiation event data to generate a reconstructed image of the subject.
An imaging system, comprising:
- a radioemission imaging scanner including a scintillator-based radiation detector with some missing scintillator crystals;
- and
- a processor programmed to reconstruct acquired radioemission data acquired by the radioemission imaging scanner by operations including:
- estimating radioemission data for the missing scintillator crystals based on the acquired radioemission data, and
- reconstructing the combination of the acquired radioemission data and the estimated radioemission data for the missing scintillator crystals to generate a reconstructed image.
Dependencies are inferred from the claim text.