Radiochromic film (RCF) is commonly used as a measurement tool in radiation therapy and diagnostic X-ray imaging. However, the results are not immediately available. This study establishes the workflow of a new diarylethene (DAE) film dosimetry and investigates the film response versus dose against kV X-rays, with the results immediately available for analysis. The DAE film includes a phosphor layer (BaFCl:Eu), a DAE layer, and a UV cut filter. The workflow of the DAE film dosimetry is as follows: (1) irradiation, where the absorbed doses were between 0.1 and 5.0 Gy at 150 kVp X-ray; (2) scanning with blue excitation light (λ = 465 nm) within 1 h of irradiation to obtain a fluorescence intensity map; and (3) analysis of the relationship between the fluorescence intensity and the absorbed dose, and then comparison between such relationship and that between the optical density and absorbed dose of the RCF. Results show that the fluorescence intensity of the DAE film increased with increasing dose. Moreover, the DAE film had a roughly linear response, while the response of RCF was logarithmic (Pearson's correlation coefficients are 0.979 and 0.843, respectively). The DAE film is feasible as a clinical dosimeter of choice.

放射变色膜 (RCF) 通常用作放射治疗和诊断性 X 射线成像中的测量工具。但是，结果无法立即获得。这项研究建立了新的二芳基乙烯 (DAE) 薄膜剂量测定的工作流程，并研究了薄膜响应与剂量对 kV X 射线的关系，结果可立即用于分析。DAE 膜包括磷光体层 (BaFCl:Eu)、DAE 层和 UV 截止滤光片。DAE 胶片剂量测定的工作流程如下： (1) 辐照，在 150 kVp X 射线下吸收剂量在 0.1 到 5.0 Gy 之间；(2) 照射1 h内用蓝色激发光(λ=465 nm)扫描，得到荧光强度图；(3)荧光强度与吸收剂量的关系分析，然后将这种关系与RCF的光密度和吸收剂量之间的关系进行比较。结果表明，DAE薄膜的荧光强度随着剂量的增加而增加。此外，DAE 膜具有大致线性的响应，而 RCF 的响应是对数的（Pearson 相关系数分别为 0.979 和 0.843）。DAE 薄膜作为临床剂量计的选择是可行的。