Radiography Theory; Comparison Of Film/Screen And Computed Radiography (Cr) - Kodak DirectView CR 825 Theory Manual

THEORY GUIDE
10DEC05
Section 2: Radiography Theory
TG4825-1
Page
13 of 120

Comparison of Film/Screen and Computed Radiography (CR)

FILM/
SCREEN
STORAGE
PHOSPHOR
SCREEN
X-rays are used in medical imaging to make an image of given body parts on a surface,
which can be read by a Radiologist or other medical personnel. The available systems for
capturing these images are:
• Screen/film - captures a projection image on an X-ray film
• Computed Radiography (CR) - captures a digital image
X-RAY
TUBE
AERIAL
IMAGE
X-RAY
TUBE
AERIAL
latent image
(On Film)
FILM PROCESSING
latent image
(Storage Phosphor)
CONVERSIONS

Radiography Theory

visible image
(On Film)
FINAL VISIBLE
visible image
(CRT)
(Film or Viewer)
ENHANCED
PROCESSING
IMAGE