Digital Subtraction


The TO DSA phantom is used for quality control testing of the image quality performance of digital subtraction angiography systems.

TO DSA enables measurement of:

  • Video system stability
  • Dynamic range
  • Spatial resolution
  • Contrast (iodine) resolution
  • Contrast uniformity
  • Contrast linearity
  • Spatial uniformity
  • Mis-registration artefacts

TO DSA includes:

  • VesselĀ (& blank) block
  • Spatial resolution block
  • Bone block
  • Slot block
  • Step wedge (in two parts)
  • Mis-registration insert

Conforms to standards:

  • AAPM Report 15: “Performance evaluation and quality assurance in digital subtraction angiography”