. The principles and practice of roentgenological technique . Posture Trunk proneOrbit to plate- degrees. -sagittal plane at angle of 45 (Figs. 217, 218, 219). Immobilization Clamps—cones—three inch cylinder Tube Position Central ray through occipital protuberancebut inclined twelve degrees cephalwardsTube plate distance to be increased be-cause of distance of petrosa from intensifvinff screen. 10. Superior Inferior Frontal Excentric (Mastoid portion of Temporal) Essential Features The condyloid process of lower jawExternal and internal auditory meatus, over-lappingMastoid cellsLater
. The principles and practice of roentgenological technique . Posture Trunk proneOrbit to plate- degrees. -sagittal plane at angle of 45 (Figs. 217, 218, 219). Immobilization Clamps—cones—three inch cylinder Tube Position Central ray through occipital protuberancebut inclined twelve degrees cephalwardsTube plate distance to be increased be-cause of distance of petrosa from intensifvinff screen. 10. Superior Inferior Frontal Excentric (Mastoid portion of Temporal) Essential Features The condyloid process of lower jawExternal and internal auditory meatus, over-lappingMastoid cellsLateral sinus Posture (Fig. 220). Side of head to incline-block 15 degreesPinna pulled forward Reids base line parallel to upper edge ofplate Immobilization, Band, Clamps or Cylinder Tube Position Three inch cone. Lower edge one inchabove external auditory meatus; frontedffe tangent to meatus TEETH 155 MAXILLAE AND TEETH The examination of the maxillae and teethma\- lie made bv the intraoral and extraoralmethods. In the former, the recording sur-face (film) is placed within the mouth, in thelatter (film or plate) is placed on the extraoral method is of greater generalutility, for the intraoral method permits onlythe study of the teeth and its immediatealveolar process. Both methods are essentialin the study of a case. INTRAORAL Gener.\l Considerations The aim is to obtain a shadow of the
Size: 1339px × 1867px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectradiogr, bookyear1920
