What is the recommended collimation for the tangential projection of the sesamoids?

The recommended collimation for the tangential projection of the sesamoids is 1-2 inches. This relatively narrow collimation is appropriate because the primary focus of this imaging technique is on the small sesamoid bones located beneath the first metatarsal head. Effective collimation helps to minimize the radiation exposure to surrounding tissues while ensuring that the area of interest is adequately visualized. By narrowing the collimation to 1-2 inches, the technician can concentrate the X-ray beam on the sesamoids, improving image quality and diagnostic utility.