Distribution of Regional Lung Function by Vibration Response Imaging

Patients diagnosed with moderate-to-severe COPD by lung function studies and clinical evaluation presented in stable clinical condition and were evaluated by lung sound recordings and quantitative V/Q lung scintigraphy. Regional signals (percentage of lung sounds) for left and right lungs were compared with the corresponding regional count percentages of each radionuclide scan, by V/Q scan regions of interest.

Inclusion criteria

• Patient is able to read and understand the Informed Consent Form and he/she will provide written Informed Consent.
• Male or female in the age range of 18-85 years.
• The patient will undergo V/Q scan (up to ONE WEEK from the VRI recording)
• The patient presented for evaluation of COPD.
• Body Mass Index >21.

Exclusion criteria

• Unstable clinical status such as fever, acute shortness of breath, cough, hemoptysis, cheat pain, or acute chest illness.
• Chest wall deformation;
• Spine deformation (including severe scoliosis);
• Hirsutism;
• Potentially contagious skin lesion on the back;
• Skin lesion that would interfere with sensor placement;
• Any additional chronic lung disease of any findings such as past tuberculosis, visualized on CXR.

• Previous resection lung surgery and history of lung tumor; 9. Cardiac pacemaker or implantable defibrillator