Digital Subtraction
TO DR
These test objects are designed for systems which operate by sensing mean signal levels, the TO DR tests dynamic range by measuring detail visibility over a wide range of input X-ray intensities. Different designs cater for subtraction and Non-subtraction systems.
The TO DR (4 piece)
Supplied in a set that allows it to be used for both subtraction and non-subtraction systems. Comprises of the following test objects:
- Filter Plate
- Non-Subtraction Detail Plate
- Subtraction Detail Plate
- Blank Plate
The TO DR (2 piece)
For use with non-subtraction systems only. Comprises of the following test objects:
- Filter Plate
- Non-Subtraction Detail Plate
