When performing an anteroposterior (AP) projection of the fifth digit of the foot, where should the image receptor be placed?

When performing an anteroposterior (AP) projection of the fifth digit of the foot, the image receptor should be positioned below the foot. This placement is crucial because it allows for proper alignment and captures a clear image of the fifth digit without distortion. Positioning the receptor below the foot ensures that the x-ray beam can access the digit perpendicularly, which is essential for obtaining an accurate radiographic representation.

In this context, when the receptor is placed below the foot, it also allows for the necessary distance between the x-ray tube and the receptor, helping to mitigate any potential blurring that may arise if the receptor is too close to the body part being imaged. Proper receptor placement is fundamental for maximizing image quality and diagnostic usefulness.