For which of the following projections would be you place the receptor parallel to the patient's cheek and have the patient tip her head 15 degrees toward the receptor with her chin slightly extended and elevated?

Question

Quizplus · Accepted Answer

For the lateral cephalometric projection,the receptor is placed perpendicular to the floor in a receptor-holding device.The long axis of the receptor is positioned horizontally;the left side of the patient's head is positioned adjacent to the receptor.The midsagittal plane (an imaginary plane that divides the face in half)must be aligned perpendicular to the floor and parallel to the receptor.For the ramus of the mandible projection,the receptor is placed flat against the patient's cheek and is centered over the ramus of the mandible.The receptor must also be positioned parallel with the body of the mandible.The head is tipped approximately 15 degrees toward the side being imaged.The chin is extended and elevated slightly.For the reverse Towne projection,the receptor is positioned perpendicular to the floor in a receptor-holding device.The long axis of the receptor is positioned vertically,the patient faces the receptor,with the head tipped down and the mouth open as wide as possible;the chin rests on the chest,and the top of the forehead touches the receptor.For the Waters projection the receptor is positioned perpendicular to the floor in a receptor-holding device.The long axis of the receptor is positioned vertically,and the patient faces the receptor and elevates the chin;the chin touches the receptor,and the tip of the nose is positioned 1/2 to 1 inch away from the receptor.The midsagittal plane must be aligned perpendicular to the floor,and the head is centered over the receptor.

For Which of the Following Projections Would Be You Place