ARRT Practice Exam 2025 – Complete Study Guide for Radiologic Technologists

Question: 1 / 400

When the X-ray tube is directed 15 degrees caudal, where will the petrous pyramids fill on the image?

The bottom 1/3rd of the orbits

When the X-ray tube is directed 15 degrees caudal, the resulting image positions the petrous pyramids in the lower part of the orbits. This angulation helps to project the petrous ridges of the temporal bones away from the base of the skull and towards the lower part of the orbits.

In imaging of the skull, particularly when evaluating the petrous temporal bones, angling the X-ray tube caudally facilitates visualizing these structures without significant overlap from the orbits. The 15-degree caudal tilt effectively moves the petrous pyramids downward in the image, allowing for better assessment of the inner ear structures and associated anatomy. Thus, the chosen answer indicating that the petrous pyramids will fill the bottom third of the orbits is accurate for this imaging technique.

Get further explanation with Examzify DeepDiveBeta

The top of the orbits

The center of the image

Outside the field of view

Next Question

Report this question

Download ARRT Practice Exam 2025 – Complete Study Guide for Radiologic Technologists PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy