Radiation imaging apparatus, radiation imaging method, and program

A radiation imaging apparatus which captures a radiation image by detecting radiation transmitted through an object, the apparatus comprising:

• a first radiation generating unit adapted to irradiate the object with first radiation from a first direction;
• a second radiation generating unit adapted to irradiate the object with second radiation from a second direction;
• a first radiation detection unit adapted to detect the first radiation irradiated by said first radiation generating unit and transmitted through the object;
• a second radiation detection unit adapted to detect the second radiation irradiated by said second radiation generating unit and transmitted through the object and the first radiation irradiated by said first radiation generating unit and scattered by the object;
• a readout unit adapted to read out image information indicating a result of imaging of the object from said second radiation detection unit;
• an image analysis unit adapted to analyze the image information read out by said readout unit;
• and
• a radiation control unit adapted to control an irradiation timing of the second radiation by said second radiation generating unit based on an analysis result obtained by said image analysis unit.