CAMRT Radiography Practice Exam

How is rotation assessed on a Caldwell view of the skull?

1. By measuring the distance from the lateral border of the skull to the lateral border of the orbit

2. By comparing the size of the frontal sinuses

3. By examining the symmetry of the nasal cavity

4. By observing the alignment of the mandible

The correct answer is: By measuring the distance from the lateral border of the skull to the lateral border of the orbit

The assessment of rotation on a Caldwell view of the skull is accurately determined by measuring the distance from the lateral border of the skull to the lateral border of the orbit. This method provides a visual cue to help identify any rotational discrepancies. In a well-positioned Caldwell view, the orbits should be symmetrical and evenly positioned relative to the skull's lateral borders. If there is a notable difference in measurement, it indicates that rotation has occurred, impacting the diagnostic quality of the image. Other options may involve anatomical features but do not specifically relate to assessing rotation in this context. For example, the size of the frontal sinuses would provide information related to sinus pathology rather than rotation. Similarly, while examining the symmetry of the nasal cavity can indicate proper positioning, it does not give a clear indication of the rotational aspect. Observing the alignment of the mandible is more pertinent for assessing other positioning errors or potential pathology rather than focusing specifically on rotation in the Caldwell view.