Medical dosimetry with alanine

Research and development are carried out within the field of medical reference dosimetry using EPR (electron spin ressonance) of alanine. The current research focusses on applications in external beam radiotherapy (MV photons with or without strong magnetic fields). Applications include dosimetry in the context of animal irradiations.  

Three alanine pellets are placed in a special water-tight holder as shown below. 

Alanine pellets ready for dosimetry


The holder as the shape of a conventional Farmer-type ionization chamber.

DTU holder for alanine pellets aimed for absorbed dose measurements in water.


Irradiation of alanine pellets in the DTU linac beam.

Alanine pellets during irradiation in DTU linac.


Christina Ankjærgaard
DTU Sundhedsteknologi
61 65 69 29


Claus E. Andersen
DTU Sundhedsteknologi
46 77 49 12


Mark Bailey
DTU Sundhedsteknologi
46 77 49 81