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your web page. Ch 11 - Positioningskull/facial bones/sinuses/mandible/
How is the central ray directed for the AP axial projection Towne method of the skull when the IOML is used to obtain the correct position of the patient's head?The central ray is directed perpendicular to the IOML and enters the MSP about 1 inch (2.5 cm) posterior to the outer canthi.
What are the central ray angle and direction for the PA axial projection Haas method of the skull?Skull PA Axial Haas Method
Position of patient Prone with the central ray directed cephalad at an angle of 25 degrees. The angulation can be varied to demonstrate other anatomy as needed. The midsagittal plane is centered to the midline of the grid.
Which central ray and direction is used for Axiolateral projection Schuller method?Petromastoid Axiolateral Projection
The central ray is directed through the external auditory meatus at a caudal angle of 15 degrees (Henschen method), 25 degrees (Schuller method), or 35 degrees (Lysholm method).
Where should the central ray exit the head for the Parietoacanthial projection waters method?Positioning / Merrills Chapter 20. |