Which of the following anode angles with the same size actual focal spot can create a radiographic image demonstrating the highest spatial resolution?

An anode angle plays a crucial role in determining the spatial resolution of a radiographic image. A smaller anode angle, such as 6 degrees, allows for better spatial resolution because it produces a more focused beam of x-rays that converge more tightly onto the target area.

When the anode angle is smaller, the effective focal spot size is reduced, leading to improved sharpness of the image. This is primarily due to the geometry of x-ray production; a smaller angle minimizes the penumbra effect, which is the blurry edge around the image that can occur with larger focal spots.

In contrast, as the anode angle increases, the effective focal spot becomes larger, resulting in decreased spatial resolution. This means that while all the angles mentioned may have the same size actual focal spot, the one with the smallest angle (in this case, 6 degrees) will provide the best sharpness of detail in the resulting image.

Hence, using an anode angle of 6 degrees will yield the highest spatial resolution when compared to larger angles, making it the optimal choice for producing detailed radiographic images.