Dynamic analysis system, correction apparatus, storage medium, and dynamic imaging apparatus
AssigneeKonica Minolta, Inc.
InventorsSumiya Nagatsuka, Yuki Kawana
Life of this patent
Estimating the term…
Abstract
A dynamic analysis system processes a dynamic image obtained by irradiation of a subject from a radiation irradiation apparatus and by dynamic imaging on dynamics of the subject detected by a detector. The dynamic analysis system includes a hardware processor that performs position correction of the dynamic image by eliminating an effect of displacement of the subject in a direction perpendicular to a detector plane.
Claims11
A dynamic analysis system that processes a dynamic image obtained by irradiation of a subject from a radiation irradiation apparatus and by dynamic imaging on dynamics of the subject detected by a detector, comprising:
- a hardware processor that
- recognizes a specific region in which the subject is captured in each of the frames constituting the dynamic image,
- measures a size of the specific region that has been recognized in the each of the frames, and
- performs position correction on at least one frame of the dynamic image to ensure that a size of the specific region of the subject in the at least one frame and a size of the specific region of the subject in a reference frame of the dynamic image are within a predetermined range, thereby eliminating an effect of displacement of the subject in a direction perpendicular to a detector plane.
A non-transitory computer-readable storage medium storing a program causing a hardware processor of a correction apparatus that processes a dynamic image obtained by irradiation of a subject from a radiation irradiation apparatus and by dynamic imaging on dynamics of the subject detected by a detector, to:
- recognize a specific region in which the subject is captured in each of the frames constituting the dynamic image,
- measure a size of the specific region that has been recognized in the each of the frames, and
- perform position correction on at least one frame of the dynamic image to ensure that a size of the specific region of the subject in the at least one frame and a size of the specific region of the subject in a reference frame of the dynamic image are within a predetermined range, thereby eliminating an effect of displacement of the subject in a direction perpendicular to a detector plane.
A dynamic analysis system that processes a dynamic image obtained by irradiation of a subject from a radiation irradiation apparatus and by dynamic imaging on dynamics of the subject detected by a detector, comprising:
- a hardware processor that performs position correction of the dynamic image by eliminating an effect of displacement of the subject in a direction perpendicular to a detector plane,
- wherein the radiation irradiation apparatus has a radiation source that moves in a direction perpendicular to the detector plane, and
- wherein the hardware processor
- moves the radiation source, while the subject is imaged, to a first position that is separated from the detector plane by a first distance in a direction perpendicular to the detector plane and to a second position that is separated from the detector plane by a second distance in a direction perpendicular to the detector plane, the second distance being longer than the first distance,
- recognizes a specific region in which the subject is captured in respective frames constituting the dynamic image,
- generates an interpolation frame by determining an outline of the specific region for a source-to-image distance set to infinity, based on the specific region in a frame generated when the radiation source is in the first position and the specific region in a frame generated when the radiation source is in the second position, and
- replaces a frame of the dynamic image that is generated when the radiation source is at the second position with the interpolation frame.
Dependencies are inferred from the claim text.