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
TO DR Phantom
TO DR Phantom