文献

X-ray dark-field chest imaging for detection and quantification of emphysema in patients with chronic obstructive pulmonary disease: a diagnostic accuracy study

a conventional thorax radiograph (7 s, 0·035 mSv effective dose)

A chest x-ray is usually the first diagnostic tool used in the evaluation of the patient’s lungs, because it is fast, accessible, and inexpensive. The applied radiation dose is comparably low with an average effective dose of about 0·02 mSv for a single posterior–anterior image. However, it is well documented that plain chest radiography has low sensitivity for detecting emphysema.