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| Q. |
Who described the new acoustic sensor? |
| A. | Golden et al |
| B. | Rijn et al |
| C. | Levkov et al |
| D. | Kassal et al |
| Answer» D. Kassal et al | |
| Explanation: A new acoustic sensor, which enhances the audibility of heart sounds and enables recording of quantitative acoustic spectral data is described by Kassal et al, 1994. This device is a polymer based adherent differential-output sensor, which is only 1.0 mm thick. | |
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