Lateral:(Hyperextension)(CR)Directed to C4 (Ex)Lateral:(Hyperextension)(Anatomy)body of the mandible almost horizontal in the normal patient, and all seven spinous processesAP Axial (Position)Supine or Upright with back against IRAP Axial (SID)40AP Axial (CR)C4 with 15-20 cephalad angleAP Axial (Anatomy)C3-C7 to T2-T3: Cervical BodiesAP Axial Oblique (Position)supine or upright facing the x-ray tube, adjust the head & body at 45-degree angle and center the cervical spine to the midline of the IRAP Axial Oblique (SID)72AP Axial Oblique (CR)C4 with 15-20 cephalad angleAP Axial Oblique (RPO) (Anatomy)Left Intervertebral ForaminaAP Axial Oblique (LPO) (Anatomy)Right Intervertebral ForaminaPA Axial Oblique (Position)prone or upright facing the grid, adjust the body at 45-degree angle and center the cervical spine to the midline of the IR,PA Axial Oblique (SID)72PA Axial Oblique (CR)C4 with 15-20 caudal anglePA Axial Oblique (LAO)(Anatomy)Left intervertebral ForaminaPA Axial Oblique (RAO) (Anatomy)Right intervertebral ForaminaAP Open Mouth (Position)supine, MSP centered to grid, arms along side, shoulders in same plane, MSP perpendicular to table, have patient open mouth as wide as possible, and adjust the head so that a line from the lower edge of the upper incisors to the tip of the mastoid process is perpendicularAP Open Mouth (SID)40AP Open Mouth (CR)Perpendicular to midpoint of IR enters the midpoint of the mouthAP Open Mouth (Anatomy)Dens, Atlas, and AxisAP Fuchs (Position)supine, MSP centered to grid, arms along side, shoulders in same plane, MSP perpendicular to table, chin elevated to place tip of chin and tip of mastoid process are verticalAP Fuchs (SID)40AP Fuchs (CR)Perpendicular to midpoint of IR, enters the neck on the MSP just distal to the tip of the chinAP Fuchs (Anatomy)entire dens with foramen magnum, symmetry of mandible, cranium, and vertebrae - indicating no rotation of the head or neck