The breath-holding mode of subphrenic rib photography is as follows

Before holding your breath, inhale deeply and exhale deeply. Breath-holding mode of subphrenic rib photography is deep inhalation and deep exhalation and then breath-holding, because deep inhalation and deep exhalation and then breath-holding can make the diaphragm rise and increase the display range of subphrenic ribs, and holding your breath for a long time will not lead to hypoxia, so hold your breath after deep inhalation.