INTRAORAL IMAGING PRINCIPLES, TECHNIQUES, ERROR CORRECTION
Digital Image Receptors - Rigid sensors and phosphor plate receptors
Rigid Digital Receptors - Charge-Coupled Device (CCD)
Complementary Metal Oxide Semiconductor (CMOS) are both direct
Indirect Digital Receptors - Storage Phosphor Plattes (SPP) and Photostimulable Phosphor Plate (PSP)
europium-activated barium fluorohalide emulsion - indirect phosphate plates
subtraction - used to compare an area before and subsequent to treatment to assess progress or change
Principle One - X-rays should be emitted from the smallest source of radiation possible
Principle Two - the x-ray source-to-object distance should be as long as possible
Principle 3 - object to receptor distance should be as short as possible
Principle 4 - the receptor and long axis of tooth should be parallel
Principle 5 - the beam should be directed perpendicular to the tooth and receptor
Parallel technique - receptor is placed parallel to long axis of tooth with central ray perpendicular is the
most accurate even though it does not account for the 3rd principle
Bisecting Angle Technique - receptor is placed as close to the tooth as possible, central ray is
perpendicular to an imaginary line that bisects angle formed by long axis of tooth
