Digitization (4)

Question 1

What is Digitization?

Answer 1

Converting a radiographic film to an electronic image (digital format).

Question 2

Two ways to digitize film:

Answer 2

1. CCD

2. Laser

Question 3

CCD Digitization system

Answer 3

CCD device illuminates film by a diffuse source, light is focused through a lens to the size of the CCD elements.

Question 4

Laser Digitization system

Answer 4

Laser scanner uses non-imaging photomultiplier tube to detect light transmitted through film, converts into a digital value = the density of film at a specific point.