Research Article

Evaluating Stable Chronic Obstructive Pulmonary Disease by Ultrasound

Figure 1

(a) Sonographic measurement of the upward and downward movements of the lung silhouette, here on the right side (lung silhouette method). The patient is sitting; the transducer is placed at the lowest point of the lung silhouette in the scapular line. While the patient breathes as deeply as possible, a video sequence is performed. Afterward, the distance between maximal inspiration and maximal expiration can be measured. (b) Sonographic measurement of the upward and downward movements of the lung silhouette, here on the right side. E marks the lowest point of the lung silhouette at maximal end expiration. (c) Sonographic measurement of the upward and downward movements of the lung silhouette—here on the right side. E marks the lowest point of the lung silhouette at maximal end expiration, and I marks the lowest point at maximal inspiration. In this example, the distance between E and I is 35.3 mm.
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