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Electron Density Phantom

The Electron Density Phantom (EDP) is an important tool to calibrate radiation oncology treatment plans to optimize delivered dose to the patient.

Order-number: QRM-EDP

download product data sheet: QRM-EDP

QRM phantom QRM phantom QRM phantom

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The Electron Density Phantom QRM-EDP houses inserts providing 5 different tissue equivalent materials used for the HU to electron density calibration of CT scanners and radiation therapy treatment planning systems. All tissue equivalents represent the real human tissue regarding its physical density and electron density. The phantom can be used with our optional available Anthropomorphic QRM-Thorax or the Oval Body Phantom.

The new revised edition of the EDP provides tissue equivalent realistic physical densities AND electron densities of human tissues of highest interest in radiation oncology treatment planing. The non-accordance of these values is a major handicap of other available electron density (or tissue equivalent) phantoms. Particularly in the higher density range (bone), this is the first phantom that provides realistic tissue simulation and values.

Phantom inserts are also available separately as cylindrical rods. Please contact us if you have further questions!


Phantom diameter: 100 mm
Phantom height: 100 mm
Phantom weight: 0.9 kg
Material phantom body: Water equivalent (CTwater, 0 HU at 80 - 140 kV)
5 Cylindrical inserts: diameter 20 mm
spongious bone
cortical bone
1 Cylindrical insert: diameter 30 mm