Final answer:
The Waters' X-ray is a specific imaging technique used for better visualization of the complex floor of the cranial cavity, particularly the orbital floor.
Step-by-step explanation:
The Waters' X-ray is the method used for better visualization of the orbital floor. This imaging technique requires the patient to place their nose and forehead against the cassette which aligns the orbital floor parallel to the film, enhancing the view of this anatomical structure. The orbital floor is part of the complex floor of the cranial cavity which is comprised of several bones including the frontal, ethmoid, sphenoid, temporal, and occipital bones. The lesser wing of the sphenoid bone demarcates the separation between the anterior and middle cranial fossae, while the petrous ridge, which is the petrous portion of the temporal bone, separates the middle and posterior cranial fossae.