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  • Title: A fully automatic device for compensating for artifacts in conventional catheter-manometer pressure recordings.
    Author: Brower RW, Spaans W, Rewiersma PA, Meester GT.
    Journal: Biomed Eng; 1975 Aug; 10(8):305-10. PubMed ID: 1182261.
    Abstract:
    A device is described which detects the resonant artifacts in clinical cathetermanometer systems and automatically sets a notch filter so as to provide some measure of compensation. The equalised response characteristic does visibly improve transient response by removing resonant artifacts due to the uneven transfer function characteristic in these systems. Artifacts due to knocking of the catheter by the heart, external vibrations induced in the manometer, its mechanical support, or the catheter are reduced, but not eliminated. Nevertheless, the system described here has provided a solution to an important class of artifacts in conventional fluid filled catheter-manometer pressure recordings.
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