Fig. 6
From: Recent advances in film dosimetry for quality assurance in microbeam radiation therapy

Beam profile study: (a) Dose map measured using HD-V2 films, averaged over 0.5 mm to reduce statistical uncertainties. (b) Dose profile in a field composed of 5 microbeams, with a distorted valley highlighted by a pink rectangle. (c) In a single microbeam field, the amplitude of the distorted valley or “false” peak (called P2) is quantified.