Lung Ultrasound Surface Wave Elastography for Assessing Interstitial Lung Disease

Area of Science:

• Medical Imaging
• Rheumatology
• Pulmonology

Background:

• Interstitial lung disease (ILD) and connective tissue diseases like systemic sclerosis (SSc) affect lung and skin elasticity.
• Accurate assessment of these conditions is crucial for patient management.

Purpose of the Study:

• To evaluate the utility of lung ultrasound surface wave elastography (LUSWE) for assessing patients with ILD, including those with SSc.
• To determine if LUSWE can differentiate between patients with ILD and healthy controls based on lung and skin properties.

Main Methods:

• LUSWE was employed to measure lung surface wave speed at various frequencies (100, 150, 200 Hz) in 91 ILD patients and 30 healthy controls.
• Skin viscoelasticity was also measured on the forearms and upper arms of all participants.

Main Results:

• Patients with ILD exhibited significantly higher lung surface wave speeds compared to healthy controls.
• Elevated skin elasticity and viscosity were observed in ILD patients relative to controls.
• Significant differences in both lung and skin properties were found between ILD patients (with and without SSc) and the control group.

Conclusions:

• LUSWE effectively identifies differences in lung and skin viscoelasticity between ILD patients and healthy individuals.
• The findings suggest LUSWE is a valuable tool for assessing ILD and SSc, potentially aiding in early-stage patient screening.