Radiography system, method for operating radiography system, and operation program for radiography system
A radiography system includes a radiation source that irradiates a subject with radiation, a camera, and a console. The camera is provided in the radiation source. The camera images the subject irradiated with illumination light that is, light having uniform brightness, to output an optical image. A CPU of the console has a first acquisition unit and a derivation unit. The first acquisition unit acquires the optical image from the camera. The derivation unit derives spinal column shape information representing a shape of a spinal column of the subject based on the optical image.
1. A radiography system comprising:
a radiation source that irradiates a subject with radiation;
a camera that is provided in the radiation source and images visible light reflected from the subject irradiated with light having uniform brightness to output an optical image; and
a processor,
wherein the processor is configured to:
acquire the optical image,
derive spinal column shape information representing a shape of a spinal column of the subject based on the optical image,
extract a feature point of the subject from the optical image,
extract derivation reference information for deriving the spinal column shape information from the feature point,
derive a polynomial representing the shape of the spinal column as the spinal column shape information based on the derivation reference information,
display, on a display, a spinal column shape derivation button that is selected to derive the spinal column shape information, and
prior to the derivation of the spinal column shape information based on the optical image:
acquire information regarding a body height of the subject,
extract right and left shoulder joint points and right and left hip joint points of the subject, as the feature point,
determine whether or not the derivation of the spinal column shape information based on the optical image is needed, based on the body height of the subject and a length of a line that connects a middle point of a line connecting the right and left shoulder joint points and a middle point of a line connecting the right and left hip joint points, and
disable the displayed spinal column shape derivation button upon determining that the derivation of the spinal column shape information is not needed.
2. The radiography system according to claim 1 ,
wherein the processor is configured to calculate a Cobb angle indicating a degree of curvature of the spinal column from the polynomial.
3. The radiography system according to claim 2 ,
wherein the processor is configured to perform control for displaying the Cobb angle on a display.
4. The radiography system according to claim 2 ,
wherein the processor is configured to
determine whether or not a secondary medical examination of scoliosis by radiography is needed for the subject, based on the Cobb angle, and
perform control for displaying a determination result on a display.
5. The radiography system according to claim 1 ,
wherein the processor is configured to
extract right and left shoulder joint points, right and left hip joint points, points indicating a maximum width of right and left armpits of an upper body, and points indicating a minimum width of the right and left armpits of the upper body of the subject, as the feature point, and
extract position coordinates of a middle point of a line connecting the right and left shoulder joint points, position coordinates of a middle point of a line connecting the right and left hip joint points, position coordinates of a middle point of a line connecting the points indicating the maximum width, and position coordinates of a middle point of a line connecting the points indicating the minimum width, as the derivation reference information.
6. The radiography system according to claim 1 ,
wherein the processor is configured to
extract right and left shoulder joint points and right and left hip joint points of the subject, as the feature point, and extract position coordinates of a middle point of a line connecting the right and left shoulder joint points, position coordinates of a middle point of a line connecting the right and left hip joint points, an inclination of the line connecting the right and left shoulder joint points, and an inclination of the line connecting the right and left hip joint points, as the derivation reference information.
7. The radiography system according to claim 1 ,
wherein the processor is configured to perform control for displaying a past optical image acquired in a past on a display to be superimposed on a current optical image at the time of imaging preparation before the derivation of the spinal column shape information in a case of performing again the derivation of the spinal column shape information on the subject subjected to the derivation of the spinal column shape information based on the optical image in the past.
8. The radiography system according to claim 1 ,
wherein the radiation source is a ceiling suspension type.
9. A method for operating a radiography system including a radiation source that irradiates a subject with radiation, the method comprising:
acquiring an optical image output from a camera that is provided in the radiation source and images the subject irradiated with light having uniform brightness;
deriving spinal column shape information representing a shape of a spinal column of the subject based on the optical image;
extracting a feature point of the subject from the optical image;
extracting derivation reference information for deriving the spinal column shape information from the feature point;
deriving a polynomial representing the shape of the spinal column as the spinal column shape information based on the derivation reference information;
displaying, on a display, a spinal column shape derivation button that is selected to derive the spinal column shape information; and
prior to the derivation of the spinal column shape information based on the optical image:
acquiring information regarding a body height of the subject,
extracting right and left shoulder joint points and right and left hip joint points of the subject, as the feature point,
determining whether or not the derivation of the spinal column shape information based on the optical image is needed, based on the body height of the subject and a length of a line that connects a middle point of a line connecting the right and left shoulder joint points and a middle point of a line connecting the right and left hip joint points, and
disabling the displayed spinal column shape derivation button upon determining that the derivation of the spinal column shape information is not needed.
10. A non-transitory computer-readable storage medium storing an operation program for a radiography system including a radiation source that irradiates a subject with radiation, the operation program causing a computer to execute a process, the process comprising:
acquiring an optical image output from a camera that is provided in the radiation source and images the subject irradiated with light having uniform brightness;
deriving spinal column shape information representing a shape of a spinal column of the subject based on the optical image;
extracting a feature point of the subject from the optical image;
extracting derivation reference information for deriving the spinal column shape information from the feature point;
deriving a polynomial representing the shape of the spinal column as the spinal column shape information based on the derivation reference information;
displaying, on a display, a spinal column shape derivation button that is selected to derive the spinal column shape information; and
prior to the derivation of the spinal column shape information based on the optical image:
acquiring information regarding a body height of the subject,
extracting right and left shoulder joint points and right and left hip joint points of the subject, as the feature point,
determining whether or not the derivation of the spinal column shape information based on the optical image is needed, based on the body height of the subject and a length of a line that connects a middle point of a line connecting the right and left shoulder joint points and a middle point of a line connecting the right and left hip joint points, and
disabling the displayed spinal column shape derivation button upon determining that the derivation of the spinal column shape information is not needed.