研究目的
To propose the need for standardization of pixel value representation in digital radiography image that reflects X-ray signal intensity.
研究成果
The study concludes that digital radiography should represent dark areas with high pixel values and light areas with low pixel values to reflect X-ray transmission dose accurately. It emphasizes the need for standardizing pixel value representation in unprocessed and processed images to reflect signal intensity.
研究不足
The study highlights the lack of standardization across different equipment in the representation of pixel values, which complicates the understanding of X-ray image characteristics. The processed images, used for diagnosis, express pixel values similarly to digital photography, not reflecting the relation between transmission dose and radiography characteristics.
1：Experimental Design and Method Selection:
The study involved acquiring unprocessed and processed images through various types of X-ray equipment and analyzing pixel values using Image J
2：46r. Sample Selection and Data Sources:
Images were acquired from different X-ray equipment including CR, DR detectors, and FPDs.
3：List of Experimental Equipment and Materials:
Equipment used included Konica Redius/Japan, Comed Tatan 2000/Korea, Canon/Japan, Philips/Netherlands, Choongwae VIDIX/Korea, GE/USA, and Lorad/USA.
4：Experimental Procedures and Operational Workflow:
The process involved acquiring raw, unprocessed, and processed images, differentiating them, and analyzing pixel values using mean pixel value, Plot profile, surface profile, and 3D analysis.
5：Data Analysis Methods:
The analysis focused on the representation of pixel values in unprocessed and processed images.
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