Information processing apparatus, information processing method, and information processing program involving performing radiography on a subject after swallowing a sample

An information processing method comprising:

• acquiring at least one optical image obtained by optically imaging a subject from a first direction;
• estimating a position of at least one first region of interest based on the optical image;
• acquiring a plurality of radiation images obtained by continuously performing radiography of a state in which the subject swallows a sample from the first direction;
• specifying a second region of interest corresponding to the position of the first region of interest in the radiation image;
• monitoring a position of the sample based on the plurality of radiation images;
• changing an imaging condition for the radiography based on a positional relationship between the second region of interest and the sample;
• determining whether the subject is in a forward leaning posture, an upright posture, or a backward leaning posture, based on the optical image;
• and
• storing the radiation image and a determination result of the posture of the subject in a storage unit in association with each other.

A non-transitory computer-readable storage medium storing an information processing program for causing a computer to execute a process comprising:

• acquiring at least one optical image obtained by optically imaging a subject from a first direction;
• estimating a position of at least one first region of interest based on the optical image;
• acquiring a plurality of radiation images obtained by continuously performing radiography of a state in which the subject swallows a sample from the first direction;
• specifying a second region of interest corresponding to the position of the first region of interest in the radiation image;
• monitoring a position of the sample based on the plurality of radiation images;
• changing an imaging condition for the radiography based on a positional relationship between the second region of interest and the sample;
• determining whether the subject is in a forward leaning posture, an upright posture, or a backward leaning posture, based on the optical image;
• and
• storing the radiation image and a determination result of the posture of the subject in a storage unit in association with each other.