RT Align - Leeds Test Objects


RT Align

RT Align - Leeds Test Objects

Radiation vs. Light field coincidence Field size check Couch travel check (3 dimensions) EPID scaling and travel Couch rotation Isocenter alignment

Routine QA

  • Perform EPID-based field size and light field coincidence checks
  • EPID scaling and movement using embedded BBs
  • Variety of couch movement tests including 3 dimensional travel and rotation
  • Isocenter alignment (Winston-Lutz) tests using central BB marker


General Features

  • Laser alignment marks
  • Use on EPID surface or couch
  • Fiducial marks for 5x5, 10x10, 15x15, and 20x20 field sizes Embedded BBs for phantom edges, center, and offset locations
  • Lightweight construction
  • Accurate placement of alignment marks and BBs

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