CAMRT Radiography Practice Exam

Which imaging technique uses a 15-degree angle for optimal results?

1. Occipitofrontal projection

2. AP pelvis view

3. Lateral thoracic view

4. Axial skull view

The correct answer is: Occipitofrontal projection

The occipitofrontal projection is designed to visualize the skull, particularly the frontal and occipital regions, while minimizing distortion and maximizing clarity of the cerebral structures. Using a 15-degree angle for this projection helps achieve optimal visualization by angling the X-ray beam adequately to capture the necessary anatomical details of the skull while reducing overlapping structures that could obscure important features. In other imaging techniques, different angles are utilized to suit their specific anatomical targets and requirements. For instance, the AP pelvis view typically utilizes a perpendicular beam to focus on the pelvic structures without angling to avoid distortions. The lateral thoracic view employs a lateral positioning of the patient with a horizontal beam to assess the thoracic cavity and surrounding structures. The axial skull view also generally involves an angle but often varies depending on the specific structures being targeted, not strictly tied to the 15-degree standard of the occipitofrontal projection. Each imaging technique has its unique requirements to ensure adequate visualization and diagnostic efficacy, making the specific angle used in the occipitofrontal projection critical for obtaining high-quality images.