Vibration Response Imaging in Healthy Subjects

Inclusion Criteria:

• Able and willing to read, understands, and provides written Informed Consent;
• Male or Female in the age range of 18-85 years;
• Subject is healthy and has not exhibited symptoms of acute respiratory tract disease for the past two months;
• Subject has normal chest X-ray and normal lung function during the past 6 months that were judged stable;
• BMI > 21.

Exclusion Criteria:

• Subject has a history of a chronic condition that affects the lungs or heart (e.g.chronic obstructive pulmonary disease, asthma, congestive heart failure) or is suspected of having such a condition;
• Subject has a chest cage deformation;
• Subject has spine deformation (including severe scoliosis);
• Subject is Hirsute;
• Subject has a skin lesion (potentially contagious) on the back;
• Subject has a cardiac pacemaker or implantable defibrillator;