What outcome is described as a result of the air gap technique?

What outcome is described as a result of the air gap technique?

• A. Increased scatter
• B. Reduced scatter
• C. Decreased patient dose
• D. Increased patient dose

Answer: (B)

Air gap technique increases the distance between the patient and the image receptor, creating an air-filled gap that photons must traverse before hitting the receptor. This extra distance helps fewer scattered photons reach the receptor because scatter tends to travel in directions that are less likely to align with the receptor after scattering. As a result, the image fog caused by scatter is reduced, leading to improved image contrast. That is why the outcome described is reduced scatter. Keep in mind this technique can cause magnification and may require adjustments to exposure to maintain brightness, but the key effect is the reduction of scatter reaching the image receptor.

Air gap technique increases the distance between the patient and the image receptor, creating an air-filled gap that photons must traverse before hitting the receptor. This extra distance helps fewer scattered photons reach the receptor because scatter tends to travel in directions that are less likely to align with the receptor after scattering. As a result, the image fog caused by scatter is reduced, leading to improved image contrast. That is why the outcome described is reduced scatter. Keep in mind this technique can cause magnification and may require adjustments to exposure to maintain brightness, but the key effect is the reduction of scatter reaching the image receptor.