Application Note: kV on GE machines with Barium glass

Too high kV reading on some GE systems with collimator made in China from 2010 onwards

BACKGROUND

Some GE systems manufactured in China from 2010 onwards has a K9 Barium glass mirror in the collimator. When measuring with RaySafe Xi (verified on base unit firmware 5.27 and higher) on these systems, you need to correct the kV value.

INSTRUCTIONS

1. Calculate the correction factor (CF) using the formula: 

2. Multiply the correction factor (CF) with the measured kV to get a corrected kV value:

EXAMPLE

RaySafe Xi measures 104 kV.

The corrected kV value is 100.9 kV.

 

Measured kV Correction Factor Corrected kV
50.0 0.995 49.8
60.0 0.991 59.5
70.0 0.986 69.0
80.0 0.981 78.5
90.0 0.977 87.9
100.0 0.971 97.1
110.0 0.967 106.4
120.0 0.962 115.4
130.0 0.957 124.4
140.0 0.952 133.3
150.0 0.948 142.2

 

CONTACT

Please visit http://www.raysafe.com for more information.

Application Note