Focal spot phantom, Mammography phantom, and Resolution phantom

Focal spot phantoms evaluate the size and shape of the X-ray tube’s focal spot using precision bar or slit patterns, ensuring spatial resolution and image sharpness. Mammography phantoms simulate breast tissue with specific adipose and glandular composition, containing embedded targets like microcalcifications, fibers, and masses to assess image quality and dose performance in mammographic systems. Resolution phantoms contain fine patterns or line pairs to measure the system’s ability to distinguish small structures, helping verify the spatial resolution of general diagnostic X-ray equipment.