PANORAMIC Flashcards
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In PATIENT POSITIONING Position the midsagittal plane perpendicular to the floor. The patient’s head must not be tipped or tilted; if the midsagittal plane is not positioned perpendicular to the floor, a distorted image results on the panoramic radiograph
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In PATIENT POSITIONING, Position the Frankfort plane parallel with the floor. When the Frankfort plane is parallel to the floor, the occlusal plane is positioned at the correct angle.
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a three-dimensional curved zone in which structures are clearly demonstrated on a panoramic radiograph
FOCAL TROUGH
depending on their location, objects may cast three different types of images:
o Real Images
o Double Images
o Ghost Images
objects that lie between the center of rotation and the receptor form
REAL IMAGES
objects that lie posterior to the center of rotation and are intercepted twice by the x-ray beam
DOUBLE IMAGES
includes the hyoid bone, epiglottis, and cervical spine all of which cast images on both sides and form
DOUBLE IMAGES
objects located between the x-ray source and center of rotation
GHOST IMAGES
appear on the image on the opposite side of its true location and at a higher level because of the upward inclination of the
x-ray beam
GHOST IMAGES
can include the hyoid bone and cervical spine or metallic
accessories such as earring and etc.
GHOST IMAGES
Branch like marks, round cluster cause by?
Static electricity occurred when removing film from cassette
White opacity at the bottom of film shaped like inverted V also called?
Shark fin error
Shark fin error cause by
Lead apron is above the collar line
Unwanted white opacity cause by?
Metal foreign object (tongue ring, braces, metal)
White tapered opacity in middle of image also called?
Washington monument error
