US 12,469,117 B2
Dynamic imaging quality control device, storage medium and dynamic imaging quality control method
Sumiya Nagatsuka, Hino (JP); and Koutarou Kanamori, Hachioji (JP)
Assigned to KONICA MINOLTA, INC., Tokyo (JP)
Filed by Konica Minolta, Inc., Tokyo (JP)
Filed on Apr. 26, 2022, as Appl. No. 17/729,527.
Claims priority of application No. 2021-076006 (JP), filed on Apr. 28, 2021; and application No. 2021-099249 (JP), filed on Jun. 15, 2021.
Prior Publication US 2022/0351358 A1, Nov. 3, 2022
Int. Cl. G06T 7/00 (2017.01); A61B 6/00 (2006.01); A61B 6/46 (2024.01); A61B 6/58 (2024.01)
CPC G06T 7/0002 (2013.01) [A61B 6/463 (2013.01); A61B 6/465 (2013.01); A61B 6/5211 (2013.01); A61B 6/583 (2013.01); G06T 2207/30168 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A dynamic imaging quality control device that performs quality control of dynamic imaging in which a dynamic state of a subject is imaged by irradiating the subject with radiation, the dynamic imaging quality control device comprising a hardware processor that
generates quality information regarding a quality of the dynamic imaging by using at least two frame images among multiple frame images constituting a dynamic image obtained by the dynamic imaging and
outputs the quality information;
wherein the quality control is performed at least at one of a time that the dynamic imaging quality control device is delivered or periodically after the dynamic imaging quality control device is delivered;
wherein the quality information includes at least either information indicating linearity of the dynamic image or information indicating evenness of the dynamic image;
wherein the dynamic imaging quality control device calculates average values of pixel values of partial regions among at least the two target frame images; and
wherein at least either:
the dynamic imaging quality control device determines whether the calculated average values indicate sufficient linearity by comparing values indicating linearity between radiation doses that pass through the respective evaluation member, and pixel values of the regions showing the respective evaluation members; or
for different partial regions of the partial regions, the dynamic imaging quality control device determines whether the calculated average values indicate sufficient evenness based on the variations of the average values of pixels.