Radiographic imaging method and apparatus

A radiographic imaging apparatus, comprising:

• a radiation source configured to emit radioactive rays to an object under examination;
• a detector configured to receive the radioactive rays penetrating the object under examination;
• and
• a processor configured to:
• obtain a posture image, the posture image being an image of an object under examination located at a shooting position between a radiation source and a detector;
• obtain items concerning posture based on the posture image or based on the posture image and a locatable sensor, the items concerning posture including a region of interest of the object under examination, an imaging plane region of the detector and a radiation field region of the radiation source on the object under examination;
• and
• obtain range information and/or position information about the region of interest, the imaging plane region and the radiation field region based on the items concerning posture, the range information and/or the position information being used for performing posture quality control.