Yellow Week Three
Terms
undefined, object
copy deck
- Ghost image
- blurred images of the jaws as seen on a panoramic radiograph caused by the imaging of an artifact located externally on the patient's head
- Elongation
- a long appearance of the image on film, caused by too little vertical angulation
- Rotation center
- the axis on which the tube head and the cassette rotate
- Transcranial
- demonstrates the temporomandibular joint on a radiograph
- Distortion
- a change in the shape of the image as compared with the object
- Foreshortening
- the image appears shorter than the actual length of the object, caused by too much vertical angulation
- Lateral skull
- used to assess the entire skull
- Bisector
- an imaginary line that divides the angle formed by the tooth and film into two equal angles
- Topographical occlusal radiographs
- appears to be a large periapical film, used when periapical exposures demonstrate insufficient areas, placement is impossible or to reduce radiation exposure when assessing edentulous areas or deciduous dentition
- Frankfort plane
- passes through the floor of the orbit and the external auditory meatus, must be parallel to the floor
- Cross-sectional occlusal radiographs
- a cross section of the arch used to locate teeth, objects or pathology
- Posteroanterior
- demonstrates the entire skull in a posterioanterior plane, used as a supplement to cephalometrics to assess growth
- Lateral
- the term for a projection of one or more sides of the face in a radiograph
- Lead apron
- device used to protect the reproductive and sensitive tissues from scatter radiation
- Tomography
- demonstrates a layer of tissue on film while blurring out other layers through the focal trough
- Midsaggital plane
- divides the body in half into right and left sides, must be perpendicular to the floor
- Lateral oblique
- known as lateral jaw survey
- Occlusal radiograph
- used to view large areas of the maxilla or mandible that cannot be demonstrated in periapical radiographs
- Phosphor
- a substance that emits light as it interacts with radiation
- Ion
- electrically charged particle
- Focal trough
- the three dimensional are objects must be positioned to be clearly demonstrated
- Fluorescent
- a substance that emits when it interacts with radiation
- Tungsten target
- focal spot in the anode
- Water's projection
- an extraoral radiograph of the sinus area
- Scanography
- one of the two radiographic techniques used to expose panoramic radiographs. Produces an xray image by scanning an object with a narrow beam of xrays
- Bitewing
- a radiograph that depicts the crown, some of the root, and surrounding bone of opposing maxillary and mandibular teeth
- Panoramic
- wide view