Digitizing radiographic films: a simple way to evaluate indirect digital images

Area of Science:

• Medical Imaging
• Digital Health
• Radiography

Background:

• Digital radiography is increasingly used in clinical settings.
• Accurate and reproducible image data is crucial for diagnostic consistency.
• Evaluating the performance of digital imaging devices is essential.

Purpose of the Study:

• To assess the performance of digital devices in radiographic image digitization.
• To evaluate the reproducibility of pixel values across different digital devices.
• To determine the impact of digitization variability on image quality.

Main Methods:

• A simple method was employed to assess device performance.
• Radiographic images were repeatedly digitized using consistent capture parameters.
• Pixel value reproducibility was quantified as a performance metric.

Main Results:

• Significant differences in pixel values were observed among the three tested devices (p<0.00001).
• One scanner and the digital camera exhibited significant pixel value variability under identical digitization conditions.
• Pixel value reproducibility varied considerably between the evaluated digital devices.

Conclusions:

• Digital devices can assign different pixel values during consecutive digitizations.
• The optical density of radiographic images and specific equipment influence pixel value assignment.
• Pixel value reproducibility was inadequate for two of the tested devices, potentially affecting longitudinal clinical examinations.