CPC A61B 6/542 (2013.01) [A61B 6/027 (2013.01); A61B 6/032 (2013.01); A61B 6/5217 (2013.01); G06T 7/0012 (2013.01); G06T 11/006 (2013.01); G06T 2207/10081 (2013.01); G06T 2207/20084 (2013.01); G06T 2207/30061 (2013.01); G06T 2211/441 (2023.08)] | 17 Claims |
1. A method comprising using at least one hardware processor to, during helical computed tomography (CT) scanning of a target object, after acquiring a set of projections from a sector in a full mode which subjects the target object to a first radiation dose:
identify a slice of the target object that is influenced by the sector;
reconstruct a CT image of the identified slice using projections that have been previously acquired for the slice;
determine whether or not a stopping rule is satisfied based on the reconstructed CT image; and,
when determining that the stopping rule is satisfied,
switch from the full mode to a reduced mode which subjects the target object to a second radiation dose, wherein the second radiation dose is less than the first radiation dose, and
acquire a set of projections from at least one subsequent sector in the reduced mode.
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