Subphrenic rib photography

Ribs above diaphragm and ribs below diaphragm overlap with lung tissue and abdominal organs respectively, and their absorption of X-rays is very different, and the required photographic conditions are also very different, so it is difficult to take care of ribs above diaphragm and ribs below diaphragm at the same time under the same photographic conditions. Diaphragmatic rib photography uses deep inhalation and breath holding to lower the diaphragm, and selects exposure conditions according to the photography technology of ribs on the diaphragm to show as many ribs as possible.