What is the effect of decreasing the distance between the X-ray source and the patient?

What is the effect of decreasing the distance between the X-ray source and the patient?

• A. Minimized radiation exposure
• B. Increased radiation exposure
• C. No impact on image quality
• D. Decreased image contrast

Answer: (B)

Decreasing the distance between the X-ray source and the patient results in increased radiation exposure to the patient. This phenomenon is explained by the inverse square law, which states that the intensity of radiation is inversely proportional to the square of the distance from the source. As the distance from the X-ray source to the patient decreases, the amount of radiation that reaches the patient increases significantly. This principle is crucial in radiology and emphasizes the importance of maintaining an appropriate distance to minimize unnecessary radiation exposure, while still obtaining high-quality images. By understanding this relationship, radiologic technologists can make informed decisions about positioning and the appropriate use of radiation to ensure patient safety while achieving diagnostic efficacy.

Decreasing the distance between the X-ray source and the patient results in increased radiation exposure to the patient. This phenomenon is explained by the inverse square law, which states that the intensity of radiation is inversely proportional to the square of the distance from the source. As the distance from the X-ray source to the patient decreases, the amount of radiation that reaches the patient increases significantly.

This principle is crucial in radiology and emphasizes the importance of maintaining an appropriate distance to minimize unnecessary radiation exposure, while still obtaining high-quality images. By understanding this relationship, radiologic technologists can make informed decisions about positioning and the appropriate use of radiation to ensure patient safety while achieving diagnostic efficacy.