The radiolucent ghost shadow in the middle of the image represents an air-filled space such as the nasal cavity, which matches the description of the radiolucent area in the medical imaging context provided.
The radiolucent ghost shadow in the middle of an image typically represents an air-filled space within bone structures seen during imaging examinations. Based on the given options, the correct answer is d) Nasal Cavity. The nasal cavity is a large, air-filled space above and behind the nose in the middle of the face. It is divided at the midline by a small area of the ethmoid bone. The nasal cavity is bordered by several bones, including the ethmoid bone, the palatine bone, and the sphenoid bone among others. It is an important part of the respiratory system and is involved in the process of breathing as well as olfaction.