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Motion blur is a common artifact that can occur in radiographic images, primarily due to patient movement during the exposure. When a patient shifts position, breathes, or makes any movement, it can lead to the blurring of structures on the radiograph. This artifact can obscure critical details, making it more challenging for radiologists to accurately interpret the image.

Additionally, the time it takes to capture an image plays a crucial role; if the exposure time is extended due to technical factors, it increases the likelihood of capturing motion blur. This emphasizes the importance of ensuring that patients remain still during imaging to maintain the clarity and diagnostic quality of the radiographic images.

In contrast, while factors like contrast enhancement, exposure time extension, and radiation scatter can create challenges in imaging, they do not directly relate to the specific artifact of motion blur. Contrast enhancement refers to improving visibility of structures with agents but is not an artifact itself. Exposure time extension can contribute to motion blur when patient movement occurs but is not an artifact on its own. Radiation scatter pertains to unwanted radiation that affects image quality but is also distinct from the particular type of blur caused by motion. Understanding these nuances helps in recognizing the specific nature of motion blur as a significant concern in radiographic practice