CAMRT Radiography Practice Exam

What range of ribs should be visible in an AP Upper rib study?

1. 1st - 6th ribs above the diaphragm

2. 1st - 10th ribs above the diaphragm

3. 5th - 12th ribs below the diaphragm

4. 7th - 10th ribs above the diaphragm

The correct answer is: 1st - 10th ribs above the diaphragm

In an AP Upper rib study, the primary objective is to visualize the upper portions of the rib cage, specifically the ribs located above the diaphragm. The correct response indicates that the 1st to the 10th ribs should be visible. This range is pertinent because the upper ribs include both the true ribs (the 1st to 7th ribs) and the false ribs (the 8th to 10th ribs), which attach indirectly to the sternum via the costal cartilage. The visualization of these ribs is crucial for properly assessing for rib fractures, deformities, or other pathologies that may affect the upper thoracic region. The diaphragm's position plays a significant role in determining which ribs are illuminated on the radiograph. The 10th rib is generally accepted as the lowest rib that should be included in the upper rib study, as it can still be affected by diaphragm positioning and is often critical for a comprehensive examination of the upper thoracic area. The other options focus on ranges either too limited or incorrectly suggesting ribs that fall below the level of the diaphragm or do not extend high enough into the upper rib cage. Thus, the correct answer, encompassing the full range of visible ribs while effectively capturing the intended upper