教科书上,对颧骨弓轴位的摄影体位是这样描述的:患者俯卧于摄影台上或坐于摄影台一旁,俯身将颏部前伸,头向后仰下颌置于胶片上缘处,头向对侧倾斜,使正中矢状面与对侧台面呈80度角。但事实上,由于人的颅型差别很大,这一倾斜角是不能固定的,有的书上虽然给出了倾斜角的范围,但具体到每个被检者, Textbooks, the zygomatic arch axial position is described as follows: the patient prone on the photographic stage or sitting on the side of the photographic stage, bent over the chin forehead, head back to the lower jaw placed in the upper edge of the film, Head tilt to the opposite side, so that the median sagittal plane and the contralateral 80 degree angle. However, in fact, due to human cranial differences are very large, this tilt angle can not be fixed, although some books give the range of tilt angle, but specific to each subject,