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. 2020 Jan 17;58(4):689–699. doi: 10.1007/s11517-020-02121-z

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© The Author(s) 2020

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Fig. 3 — Pressure-volume loops for an example 3 mm balloon in a cadaver ET. Three distinct types of pressure-volume loop can be seen; the first cycle, subsequent cycles (2&3) and a balloon-only unconstrained inflation