An X-ray kymograph is a device consisting of two blocks: an X-ray and a recorder. The X-ray unit of the X-ray kymograph is used to convert sound vibrations of the chest that occur during the breathing process into their images. The resulting image of the vibrations is reflected on the screen of the movie camera. X-ray kymography device: Figure. The principle of operation of an x-ray kymogram. If the patient exhales deeply and takes a breath while breathing, then each phase of breathing will look different on the x-ray.
Purpose of research methods: study of waveforms. Noting their changes over time, they record the breathing process - find out which part of the lungs is in the state of inhalation or exhalation. Each phase of human breathing corresponds to a specific waveform.
In case of stenosis, chronic obstructive pulmonary disease, the breathing phases are shifted in the duration of inhalation and exhalation relative to normal breathing