👉 Hemautography is a diagnostic test that uses an X-ray machine to examine the lungs. It is used to diagnose lung diseases, such as pneumonia, bronchitis, and emphysema. The patient lies on their back with their head lowered over their chest, and the doctor places a thin metal wand or catheter into their mouth and passes it down their throat. As the wand or catheter moves through the airways, it creates an image of the lungs in the X-ray