摄影体位:患者俯卧于摄影台上,头向被检侧旋转,将被检侧额部、颧部贴于台面,鬓角中线对准台面长轴中线,被检侧外耳孔与对侧外眦角联线平面平行台面,听眦线垂直台面。中心射线:侧面观垂直通过患侧外耳孔至胶片中心。顶面观垂直通过患侧鬓角中线至胶片中心。胶片尺寸:5ｉｎ×7ｉ Photographic position: The patient prone on the photographic stage, head to the seized side of the rotation, will be seized on the forehead, the zygomatic affixed to the table, the midpoint of the midpoint of the table alignment long axis, the seizure of the outer ear hole and contralateral flare angle Parallel plane parallel to the table, listening 眦 line vertical table. Center ray: Lateral view perpendicular to the center of the film through the affected lateral ear. Top view perpendicular through the ipsilateral midline to the center of the film. Film size: 5in × 7i