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Lateral

Lateral. Head in lateral position, with the affected side nearest the bucky. Mandible and the occiput not overshadowing the c. spine. Interorbital line perpendicular to bucky. Median sagittal plane parallel to bucky. Center at a point 2.5 cm above the EAM (midway between glabella and EOP).

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Lateral

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  1. Lateral Head in lateral position, with the affected side nearest the bucky. Mandible and the occiput not overshadowing the c. spine. Interorbital line perpendicular to bucky. Median sagittal plane parallel to bucky. Center at a point 2.5 cm above the EAM (midway between glabella and EOP)

  2. Lateral • Head in lateral position, with the affected side nearest the bucky • Mandible and the occiput not overshadowing the c. spine • Interorbital line perpendicular to bucky • Median sagittal plane parallel to bucky • Center at a point 2.5 cm above the EAM (midway between glabella and EOP)

  3. Radiographic appearance

  4. Radioraphic Appearance - Criteria • Entire cranium without rotation or tilt, including mandible & 1-3 cervical vertebrae • Superimposed orbital roofs & greater wings of sphenoid • Superimposed mastoid regions and EAMM • Sella tursica in profile • Penial gland if calcified

  5. Fronto-occpital 300 – Towne’s In AP (supine) position. Baseline (plane) perpendicular to the bucky. Median sagittal plane perpendicular to bucky. Central ray angled 300 caudally directed in midline through midway between EAMM Cassette displaced down appropriately

  6. Fronto-occpital 300 – Towne’s • In AP (supine) position • Baseline (plane) perpendicular to the bucky • Median sagittal plane perpendicular to bucky • Central ray angled 300 caudally directed in midline through midway between EAMM • Cassette displaced down appropriately

  7. Towne’s view Criteria Dorsam sellae and posterior clinoid processes visible within the foramen magnum. Symmetric petrous pyramids projected by the side of the foramen magnum. Equal distance from lateral border of the skull to the lateral margin of the foramen magnum on both sides.

  8. Radiographic appearance - Criteria • Dorsamsellae and posterior clinoid processes visible within the foramen magnum • Symmetric petrous pyramids projected by the side of the foramen magnum • Equal distance from lateral border of the skull to the lateral margin of the foramen magnum on both sides.

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