This page is dedicated to covering how the diaphragm will appear across different radiological studies.
CHEST X-RAY
A chest X-ray is a very routinely ordered study, and a core component of reading a chest X-ray is to evaluate the appearance of the diaphragm.
The right diaphragm (black arrow) is generally at a higher level then the left diaphragm (white arrow). This is because the liver rests under the right diaphragm and pushes it superiorly (source).
