In this research, an alternative radiochromic film readout system based on computer vision was instrumented with a commercial camera and a 6500 K temperature light-emitting diode. This arrangement works in transmission mode as the standardized flatbed scanner used in clinical dosimetry tasks. Scanner was employed as a reference to compare the optical density response. Nine 3 3 cm² samples of EBT3 film were irradiated within a dosimetric range from 0 to 15 Gy taking a 100-pixel region of interest from each one for noise, optical density uncertainty, and reproducibility analysis for the three colour components. The densitometer prototype has a better response to optical density, 43% more sensitivity than the scanner in all channels, and a maximum of 0.93 for the red one; the best noise rejection is in the green component. However, the noise and lowest total uncertainty results are found in the scanner. Future work must focus on noise reduction and the robustness of the opto-electronic instrumentation to enhance the long-term reproducibility of the prototype.

在这项研究中，另一种基于计算机视觉的放射变色胶片读出系统配备了商用相机和 6500 K 温度发光二极管。这种布置在传输模式下作为临床剂量测定任务中使用的标准化平板扫描仪工作。使用扫描仪作为参考来比较光密度响应。九个 3 3 厘米²在 0 到 15 Gy 的剂量范围内对 EBT3 胶片样品进行辐照，从每个样品中提取 100 像素的感兴趣区域，用于噪声、光密度不确定性和三种颜色分量的再现性分析。密度计原型对光密度的响应更好，所有通道的灵敏度都比扫描仪高43%，红色的最高为0.93；最好的噪声抑制在绿色分量中。但是，在扫描仪中发现了噪声和最低总不确定性结果。未来的工作必须集中在降噪和光电仪器的稳健性上，以提高原型的长期可重复性。