Reconstruction device, method

Abstract

According to an embodiment, the reconstruction device includes a selection unit, a determination unit, a calculation unit, a combination unit, and a deletion unit. The selection unit selects two scintillators with a predetermined LOR. The determining unit determines intersecting voxels in a reconstruction space intersecting a straight line connecting the two scintillators. The calculation unit calculates adjacent voxels of the intersecting voxels based on the expansion direction and the expansion distance. The merging unit combines intersecting voxels and adjacent voxels to create a merged set of voxels. The deleting unit deletes duplicate voxels in the merged set to generate voxels for which TOR is specified.

Description

technical field

[0001] Embodiments described in this specification relate to reconstruction devices, methods, and programs. Background technique

[0002] In the field of medical imaging, the use of positron emission tomography (PET) is expanding. In PET imaging, radiopharmaceuticals are ingested by infusion, inhalation, or food, and taken into the figure 1 The imaged subject 15 is shown. After the radiopharmaceutical is administered, the drug concentrates at a specific site in the human body (ie, the subject 15 ) due to the physical properties and biomolecular properties of the drug. The actual spatial distribution of the drug, the concentration in the accumulation area of ​​the drug, and the dynamics of the handling from administration to final discharge are important factors with clinical significance. In this treatment, a positron emitter attached to a radiopharmaceutical emits positrons according to physical properties of the isotope such as half-life and branching ra...

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