kVp Accuracy and Reproducibility

Equipment

kVp meter

Procedure 1

1.Set meter at about 30" from focus or as prescribed by manufacturer.

2. Set 400 mA and 200 ms on the console

3. Measure kVp from 60-120 kVp (eg. 60, 70, 80, 100, 120)

4. Calculate error between set and measured value

Procedure 2

1.Set meter at about 30 “ from focus or as prescribed by manufacturer.

2. Set 400mA and 200ms on the console.

3. Set a fix 70 KVp on the console.

4. Perform five exposures

5. Calculate reproducibility variance

SID 30”Table Top Technique

Central Ray

How to use the kVp meter video

http://www.youtube.com/watch?v=g4n3akjyITM