Radiographic imaging apparatus

A radiographic imaging apparatus comprising:

• a base;
• a radiation irradiation unit;
• a radiation detection unit;
• an arm configured to support the radiation irradiation unit and the radiation detection unit in a state in which the radiation irradiation unit and the radiation detection unit face with each other;
• and
• an arm moving mechanism configured to move the arm,
• wherein the arm moving mechanism includes:
• a first rotatable member mounted on the base, the first rotatable member being rotatable about a first rotation axis perpendicular to the base;
• a second rotatable member mounted on the first rotatable member, the second rotatable member being rotatable about a second rotation axis perpendicular to the base;
• a third rotatable member mounted on the second rotatable member to support the arm, the third rotatable member being rotatable about a third rotation axis perpendicular to the base;
• and
• a rotatable member rotation mechanism configured to rotate the first rotatable member, the second rotatable member, and the third rotatable member, and
• wherein the radiographic imaging apparatus further comprises a rotation controller configured to control the rotatable member rotation mechanism so that the radiation irradiation unit and the radiation detection unit are moved linearly between an imaging position for performing radiographic imaging and a retreat position retreated from the imaging position.