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Title Predicting air-balloon and water-filled infant catheter frequency responses
Author(s) Craig G. Hartford; Johan M. van Schalkwyk; Geoffrey G. Rogers; Martin J. Turner
Source IEEE Eng. Med. Biol., Vol. 16, No. 3, Pages 27-33
Publication Date May/June 1997
Abstract In this article, we discuss our study that quantitatively tests the validity of the assumption that fluid-filled NGC frequency responses adequately fit a second-order system. This assumption is inherent to equations commonly used to predict frequency responses from square-wave response techniques. We review our experiment in which we determined the frequency response of different catheter brands with a sine-wave generator, and we present the results.

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