| 摘要 |
A radiation imaging apparatus includes an imaging unit to capture a radiation image of an object, a discrimination unit to discriminate whether the current imaging mode is a mode of storing radiation images or a mode of storing no radiation image, a first calculation unit to calculate image size information, a second calculation unit to calculate image display region information indicating the size of an image display region, a first decision unit to decide a rotation condition for the rotation of an displayed image, and a second decision unit to decide an enlargement/reduction condition. If discriminated at the start of radiation irradiation that the current mode is the mode of storing no image, the second decision unit decides an enlargement/reduction condition from image size information and image display region information to maximize the ratio of an overall radiation image rotated under the rotation condition decided.
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