chapter 9 DT matching

cathode

negative pole in tube, source of electrons

sensitivity of rays

ability of rays to penetrate and possibly ionize tissues

indirect digital x-ray

conversion of a processed radiograph to a digital work station

detail

point to point delineation or view of tiny x-ray structures

radiolucent

ability of substance to permit ray passage, making film dark

cephalometric

radiograph of head, used in orthodontic and prosthodontics

definition

sharpness and clarity of image outline on radiograph

sagittal place

imaginary line dividing head into right and left side

ala-tragus line

imaginary line to direct placement of PID during exposures

edentulous survey

radiographs of patient without teeth

aperture or port

opening in lead collimator to regulate beam size

reticulation

crackling of film emulsion surface caused by temperature change

ion

particle carrying electric charge

elongation

tooth structure appearing longer than anatomical size

biteblock

device used to maintain films in the mouth during exposure