What is the cassette size used for an AP HIP X-ray?

The standard cassette size used for an anteroposterior (AP) hip X-ray is 10" x 12". This size is particularly well-suited for capturing the necessary anatomical details of the hip joint and surrounding structures while allowing for optimal image quality without unnecessary exposure. The dimensions of 10" x 12" provide a balanced approach to fitting the anatomy of the hip within the field of view while minimizing the need for additional positioning adjustments or retakes.

Using this size ensures that the entire hip joint is properly encompassed within a single exposure, which is crucial for accurate diagnosis and evaluation. The choice of this cassette size reflects established practices in radiographic positioning, emphasizing both the technical requirements of the X-ray and the practical aspects of patient comfort and equipment usability.