CAMRT Radiography Practice Exam

What helps demonstrate the intervertebral foramina of the thoracic spine?

1. Coronal plane 45 degree to the IR

2. Midsagittal plane 45 degree to the IR

3. Coronal plane 70 degree to the IR

4. Midsagittal plane parallel to the IR

The correct answer is: Midsagittal plane parallel to the IR

Demonstrating the intervertebral foramina of the thoracic spine is best achieved by positioning the patient and the imaging receptor in a way that aligns the anatomical structures appropriately for optimal visualization. When the midsagittal plane is parallel to the image receptor (IR), the intervertebral foramina become well visualized. This alignment minimizes the superimposition of structures and allows for the foramina to be seen more clearly. In addition, this positioning technique ensures that the X-ray beam passes perpendicularly through the foramina, allowing for an unobstructed view. The thoracic spine's complex curvature makes it essential to consider positioning carefully to get the most diagnostic information during imaging. This technique is particularly beneficial for assessing spinal conditions or pathologies that may affect the foramina, such as herniated discs or other degenerative diseases. The other positioning options either involve appropriate angles or planes that would not sufficiently highlight the foramina due to potential obstructions or improper alignment, making them less effective choices for this specific imaging objective.