| CPC G16H 30/20 (2018.01) [A61B 6/032 (2013.01); A61B 6/465 (2013.01); A61B 6/467 (2013.01); A61B 6/488 (2013.01); A61B 6/545 (2013.01); G01T 1/20182 (2020.05)] | 15 Claims |
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1. A device for planning an image acquisition of an object by a computed tomography scanner, the device comprising:
an input for receiving a pre-scan image of the object from the computed tomography scanner;
a processor; and
an output,
wherein the processor is configured to:
obtain a parameter selection for the image acquisition being planned based on the pre-scan image, in which the parameter selection comprises at least a selection of an upper and lower scan range limit in an axial direction of a region of the object to be scanned,
determine a value indicative of at least one image gradient and/or image gradient component in the pre-scan image at the upper and/or lower scan range limit and/or in a predetermined neighborhood of the upper and/or lower scan range limit,
determine whether the value exceeds a threshold, and; if the value exceeds the threshold:
to indicate via the output that the selected upper and/or lower scan range limit does not satisfy a quality criterium for reconstruction, and/or
to determine and provide via the output a new parameter selection to avoid the image gradient(s) exceeding the threshold by repositioning the upper and/or lower scan range limit and/or resizing the scan range and/or changing an orientation of the selected region to be scanned.
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