RW3 slabs for quality assurance in radiation therapy

EASY SLAB - RW3 Slab Phantom for Quality assurance

EASY SLAB consists of water-equivalent RW3 slabs and supports frequently reccurent standard dosimetry in the field of radiation oncology.

The RW3 slab phantom is used in combination with irradiation detectors like ionization chambers. Corresponding adapter plates allow the detectors to be positioned as required for the QA task.

quality assurance of high-energy photons and electrons on linacs with easy slab

EASY SLAB phantom with ionization chamber adapter
RW3 slab phantom with irradiation detector adapter
  • Measurements with a homogeneous,
    standardized slab phantom with properties equivalent to water
  • Measurement of dose distributions
    which have been computed for the phantom within the framework of radiation therapy planning
  • Measurements with irradiation detectors
    from all well-known vendors by use of optional adapter plates
  • Measurement of dose distributions
    which have been computed for the phantom in connection with
    intensity-modulated fields

EASY SLAB - two phantom sizes

Case for RW3 slabs

EASY SLAB is available as 300 mm cube-shaped RW3 phantom or in a larger version as 400 x 400 mm x 300 mm cuboid.
Both versions consist of 1 slab of 1 mm thickness, 2 slabs of 2 mm, 1 slab of 5 mm and 29 slabs of 10 mm.

EASY SLAB can be composed to a cuboid block phantom with a base of 300 mm2 or 400 mm2 and a maximum heigth of 300 mm. Detectors can be positioned in various measuring depths in steps of 1 mm using dedicated detector adapter RW3 plates.

For each of the two phantom sizes, a variety of different detector adapter plates are available.
EASY SLAB will be supplied with a transport and storage case.

Technical Data - easy slab

MaterialWater-equivalent white polystyrene (RW3) for high-energy photon and electron radiation
Energy rangePhotons 60Co – 25 MV
Electrons 4 – 23 MeV
Material compositionPolystyrene (C8H8) with admixture of 2.1 % ± 0.2 % TiO2
Mass density1.045 g /cm3
(Z / A)r value0.536
Electron density 3.386 × 1023 e/g
Electron concentration3.39 × 1023 e/cm3
300 x 300 x 300 mm1 slab of 1 mm thickness, 2 slabs of 2 mm,
1 slab of 5 mm, 29 slabs of 10 mm
400 x 400 x 300 mm1 slab of 1 mm thickness, 2 slabs of 2 mm,
1 slab of 5 mm, 29 slabs of 10 mm