Description

These test patterns are designed for quick quantitative assessments of the limiting spatial resolution of an x-ray system. The line pair patterns consist of a thin foil of Lead sandwiched between plastic plates. In the foil, linear slits are cut with a range of widths, these alternate with linear bars of the foil of equal width. One slit and one bar is referred to as a line pair, and the width of each group of lines is specified in terms of the number of line pairs per mm (LP/mm). The observer counts the number of groups in which he can resolve the slits from the bars and as such can determine the resolving capability of the x- ray system in terms of LP/mm. A wide range of pattern designs is available with varying ranges of LP/mm and foil thicknesses.

Specifications

• Fluoroscopy:
  Line Pair Type 18-010, Type 38-010
  Focal Spot Assuming the system focal spot size is in excess of 0.5mm use
  Type 9/20-005 or 9/20/360-005.
• Digital Radiography:
  Line Pair Type 18e-004, Type 38-005, Type 43-005
  Focal Spot Assuming the system focal spot size is in excess of 0.5mm use
  Type 9/20-005 or 9/20/360-005.
• Mammography:
  Line Pair Type 18ul-003, Type 18e-004
  Focal Spot Assuming the system focal spot size is 0.3mm use Type 9/05-003
  Assuming the system focal spot size is 0.6mm use Type 9/10-003
• Dental (Intra-oral):
  Line Pair Type 70123(LTO) (2-6.3 LP/mm)
  Type 70123(PLUS) (8-24 LP/mm)
• Dental (OPG):
  Line Pair Type 70123(LTO) (2-6.3 LP/mm)

Photos

Models

• 07-501 - X-RAY Resolution Test Patterns Typ 1-83 (1.0-4.8 LP/mm) - Dim. 110 x 40mm - Ep. Foil Pb: 0,1mm
• 07-503 - X-RAY Resolution Test Patterns Typ 9/0,5° (0.63-20.0 LP/mm) - Dim. Ø55mm - 0,5°
• 07-509 - X-RAY Resolution Test Patterns Typ 9/2,0° (0.64-10.0 LP/mm) - Dim. Ø55mm - 2,0°
• 07-515 - X-RAY Resolution Test Patterns Typ 82 (1.0-10.0 LP/mm) - Dim. 80 x 40mm - Ep. Foil Pb: 0,05mm
• 07-526 - X-RAY Resolution Test Patterns Typ 81 (0.6-10.0 LP/mm) - Dim. 65 x 55mm - Ep. Foil Pb: 0,05mm
• 07-535 - X-RAY Resolution Test Patterns Typ 38 (0.6-5.0 LP/mm ) - Dim. 50 x 50mm - Ep. Foil Pb: 0,05mm
• 07-542 - X-RAY Resolution Test Patterns Typ 9/1,0° (1.27-16.0 LP/mm) - Dim. Ø55mm - 1,0°
• 07-543 - X-RAY Resolution Test Patterns Typ 9/1,5° (0.85-16.0 LP/mm) - Dim. Ø55mm - 1,5°
• 07-555 - X-RAY Resolution Test Patterns Typ 70073 (2.0-20.0 LP/mm) - Dim. 24 x 12mm - Ep. Foil Pb: 0,03mm

Documents

• X-RAY Resolution Test Patterns Brochure