What positioning landmark is located at the base of the nasal spine?

The acanthion is a key anatomical landmark located at the base of the nasal spine, which is where the two maxillae (the upper jawbones) come together. This point is clinically significant because it serves as a reference in various radiographic procedures, especially those involving the facial bones. Understanding the position of the acanthion helps radiologic technologists ensure proper alignment and positioning during imaging to achieve accurate results, particularly in obtaining views of the nasal cavity and surrounding structures.

The nasion, situated at the bridge of the nose, is higher up than the acanthion and thus does not represent the base of the nasal spine. The zygoma describes the cheekbone area and is lateral to the nasal spine, while the infraorbital rim refers to the lower border of the eye socket, which is also separate from the acanthion. Recognizing these relationships among facial landmarks is essential in radiologic positioning and anatomy.