Title :
Preliminary study of human lung elasticity with the noninvasive surface wave technique
Author :
Zhang, Xiaoming ; Qiang, Bo ; Hubmayr, Rolf D. ; Greenleaf, James F.
Author_Institution :
Dept. of Physiol. & Biomed. Eng., Mayo Clinic Coll. of Med., Rochester, MN, USA
Abstract :
Mechanical properties of lung are closely related to lung diseases. However, currently there are no noninvasive methods that can measure the local lung tissue mechanical properties. In this paper, a technique that involves tracking the surface wave propagation and using ultrasound images to guide the measurements is introduced. The proposed method is tested on a human subject at both functional residual capacity (FRC) and total lung volume (TLV) conditions. The results show that the surface wave speed at 200 Hz is 4.31 m/s and 7.43 m/s at FRC and TLV, respectively. The proposed method has a clinical potential for quantifying the lung regional stiffness noninvasively.
Keywords :
biomechanics; biomedical ultrasonics; elastic waves; elasticity; lung; both functional residual capacity; frequency 200 Hz; human lung elasticity; lung disease; lung mechanical properties; lung regional stiffness quantification; noninvasive surface wave technique; surface wave propagation tracking; surface wave speed; total lung volume; ultrasound images; velocity 4.31 m/s; velocity 7.43 m/s; Delay; Lungs; Mechanical factors; Mechanical variables measurement; Surface waves; Ultrasonic imaging; Ultrasonic variables measurement; elasticity; lung; surface wave; ultrasound;
Conference_Titel :
Ultrasonics Symposium (IUS), 2010 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4577-0382-9
DOI :
10.1109/ULTSYM.2010.5935742
