Digital radiography

Digital radiography uses a number range to indicate the expose level in the system. In some cassette technology based systems, they refer to this value as an "S" number. In direct digital capture, the various manufacturers have implemented slightly different schemes. Most of them will use a histogram like digital photographers use to maintain the quality of their digital images.

There are "ISO" equivelencies which the manufacturer of the digital system can provide to you. These may or may not be 100% accurate. I worked for a company that sold DDR products. I have worked around a few physicists that disputed the manufacturers stated ISO speeds.

Digital is a different medium than film. You cannot always expect to use the same exposures that were used in a film based system. Depending on the type of digital system you have, you will need to watch for excessive blooming, especially in lung fields and on c-spines. Digital x-ray is a new ballgame if you have been strictly film and are now converting.

If you need any help from me, you can reach me at edpolakoff@yahoo.com

Now there son I just learned me some thing new. I was waiting for enlightenment and you answered my prayer.

Anytime. Feel free to track me down if you need anything else.

I forgot to wrote down: digital radiography for industrial applications, but your answer was very useful. Thank you.

Try www.asnt.org for more and better information.