VIRTUAL FRAMES FOR DISTRIBUTED LIST-MODE TIME-OF-FLIGHT RECONSTRUCTION WITH CONTINUOUS BED MOVEMENT

摘要

A positron emission tomography (PET) system includes a memory (18), a subject support (3), a categorizing unit (20), and a reconstruction unit (22). The memory (18) continuously records detected coincident event pairs detected by PET detectors (4). The subject support (3) supports a subject and moves in a continuous movement through a field of view (10) of the PET detectors (4). The categorizing unit (20) categorizes the recorded coincident pairs into each of a plurality of spatially defined virtual frame (14). The reconstruction unit (22) reconstructs the categorized coincident pairs of each virtual frame into a frame image and combines the frame images into a common elongated image.

主权项

1. A positron emission tomography (PET) system, comprising:
a memory configured to continuously record detected coincident event pairs detected by PET detectors; a subject support configured to support a subject and move in a continuous movement through a field of view of the PET detectors; a categorizing unit configured to categorize the recorded coincident pairs into each of a plurality of spatially defined virtual frames based on time-of-flight information; and a reconstruction unit configured to reconstruct the categorized coincident pairs of each virtual frame into a frame image and combine the frame images into a common elongated image.