American Board of Orthodontics (ABO) Practice Exam 2026 - Free Orthodontics Practice Questions and Study Guide

In the context of imaging for a localized temporomandibular joint (TMJ) scan, a field of view (FOV) size that is less than 5 cm is ideal. This smaller FOV allows for higher resolution images of the TMJ area, which is crucial for diagnosing conditions related to the joint such as dysfunction, displacement, or structural abnormalities. The localized nature of TMJ assessments necessitates a more focused imaging area to ensure that relevant anatomical structures are captured clearly, enhancing the ability to interpret findings accurately.

Utilizing a FOV that is too large could lead to less effective imaging of the TMJ itself, as it would capture additional anatomy that is not of primary concern, potentially obscuring important details needed for diagnosis and treatment planning. Therefore, the preference for a smaller FOV underlines the importance of precision in imaging when dealing with complex and delicate structures like the temporomandibular joint.