The invention discloses an adjustable posture pad special for cone beam breast CT. The adjustable posture pad is an
air cushion body. The
air cushion body comprises a chest position pad and a leg position pad, wherein the chest position pad is positioned on the same side as the leg position pad; the chest position pad is provided with a hollow
mammary gland examination hole, the size of the
mammary gland examination hole is matched with the size of a breast on one side of a
human body, the
mammary gland examination hole is positioned at the middle part of the chest position pad; the chest of asubject clings to the edge of the examination hole, the breast passes through the mammary gland examination hole and naturally droops into a cone beam mammary gland CT scanning cavity; and air volumeand temperature of air introduced into the chest position pad and the leg position pad are adjustable. According to the chest position pad disclosed by the invention, the
body position is adjusted when a subject is subjected to breast examination scanning, and the one-sided chest position pad can be adjusted laterally when the one-sided breast is examined, so that the one-sided chest position ofthe subject is fixed and is suitable for examination scanning; and meanwhile, the posture pad solves the problem that the breast on the other side is compressed and feels uncomfortable when the subject is subjected to breast
CT examination. The temperature of the air introduced into the posture pad can be adjusted, so that the emotion of the subject can be relieved, the movement in the inspectionprocess can be prevented, and the generation of artifacts can be prevented.