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Technology > Hospital

Vibration Response Imaging™- the technology

The first generation medical devices, VRIxp™ and VRIxv™, utilize custom-designed acoustic sensor arrays, V-Arrays (Vibration Arrays) to measure and visualize acoustic vibrations that are generated in the lungs and recorded from the posterior chest wall. The dynamic visualization of the sound distribution can be visually checked for homogeneity, morphology (related to the phase in the breath cycle), synchrony and asynchrony, and other parameters that can provide specific indications for a variety of lung pathologies. Incorporated processing software provides objective quantitative measures, amongst which is the automatic detection of adventitious lung sounds, such as crackles and wheezes. A sophisticated recognition algorithm graphically visualizes these pathology-related sounds on the dynamic image at the respiratory phase and sensor location in which the sound was registered. Headphones can be attached to the system in order to auscultate each of the acoustic sensors separately. VRI is the only radiation-free device that can actually provide lung function measurements for each lung zone separately,in a patient-effortless way.

Accuracy, objectivity, unlimited repeatability and reproducibility

Because the technique is radiation-free and non-invasive, VRI™ can be repeated multiple times without causing harm to the patient. VRI™ has demonstrated excellent results in accuracy and reproducibility studies; as well for qualitative and quantitative analysis of the visual read-out and automatic image quantification methods used in daily clinical routine check-ups.

References:

Dynamic Visualization of Lung Sounds with a Vibration Response Device: A Case Series.
Dellinger RP, Parrillo JE, Kushnir A, Rossi M and Kushnir I. (Respiration 2008; 75(1): 60-72)
Accuracy Of Gray-Scale Coding In Lung Sound Mapping.
Atul C. Mehta, Merav Gat, Shlomit Mann, J. Mark Madison. (Computerized Medical Imaging and
Graphics 2010 July; 34(5): 362-9)
Validation of Automatic Wheeze Detection in Patients with Obstructed Airways and in Healthy Subjects.
Guntapalli KK, Alapat PM, Bandi VD, Kushnir I. (Journal of Asthma 2008; 45; (10): 903-7)