EP-1309: Dosimetry audit of the entire radiotherapy process using lithium formate EPR dosimeters

System for dose audit for external radiation therapy based on EPR dosimetry with Lithium Formate

Lithium formate EPR dosimetry for accurate measurements of absorbed dose in radiotherapy

Lithium formate has shown to be a material with properties suitable for electron paramagnetic resonance (EPR) dosimetry, among them up to 7 times higher sensitivity compared to alanine, which is a well-established EPR detector material for dose determinations in radiotherapy. The aim of this thesis was to further investigate the properties of lithium formate and develop the dosimetry system tow...

Einar Waldeland Lithium formate EPR dosimetry Properties and applications in

Investigation of signal fading in lithium formate EPR dosimeters using a new sensitive method.

The aim of this study was to investigate signal fading in lithium formate electron paramagnetic resonance (EPR) dosimeters used for clinical applications in radiotherapy. A new experimental method for determination of signal fading, designed to resolve small changes in signal from slowly decaying unstable radicals, was used. Possible signal fading in lithium formate due to different storage tem...

A system for remote dosimetry audit of 3D-CRT, IMRT and VMAT based on lithium formate dosimetry.

The aim of this work was to develop and test a remote end-to-end audit system using lithium formate EPR dosimeters. Four clinics were included in a pilot study, absorbed doses determined in the PTV agreed with TPS calculated doses within ±5% for 3D-CRT and ±7% (k=1) for IMRT/VMAT dose plans.