American Society of Radiologic Technologist (ASRT) Practice Exam 2025 – All-in-One Guide for Exam Success!

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In which scenario is the TMJ of interest typically closest to the image receptor?

When it is rotated away from the image receptor

When the patient's head is in a lateral position

The temporomandibular joint (TMJ) is best visualized when the patient's head is in a lateral position. In this orientation, the TMJ is situated closest to the image receptor, allowing for a clearer and more accurate radiographic image. This positioning helps to minimize magnification and distortion, which can occur if the joint is rotated away or if the midsagittal plane is not properly aligned with the receptor. When positioned laterally, the anatomical structures of the TMJ are more parallel to the image receptor, enhancing the details captured in the radiograph.

Other orientations like tilting the head downward may obscure the TMJ or distort its representation on the image, making it less effective for diagnosis. Therefore, lateral positioning is optimal for imaging the TMJ because it ensures that the joint is as close as possible to the image receptor, facilitating better visualization.

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When the midsagittal plane is aligned with the receptor

When the patient's head is tilted downward

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