Companding technique for high dynamic range measurements using gafchromic films

TL;DR

This paper introduces a novel method for high dynamic range dose measurements with gafchromic films, utilizing a rescaling approach and registration protocol to accurately measure across a wide dose spectrum.

Contribution

The paper presents a new methodology combining rescaling and registration techniques for precise high dynamic range dose measurements with gafchromic films.

Findings

Effective dose measurement across several decades of dose levels.

Improved accuracy through registration and scaling corrections.

Potential for enhanced dose assessment in radiology.

Abstract

We propose a methodology to perform dose measurements using gafchromic films which can span several decades of dose levels. The technique is based on a rescaling approach using different films irradiated at different dose levels. This is combined with a registration protocol correcting positioning and scaling factors for each film.