New Device to Measure Cross-Sectional Areas and Segmental Volumes of Objects and Limbs.

Autor:	Houwen F; Peracutus B.V., Kronenberg, the Netherlands., Stemkens J; Stemkens.Com B.V., Roggel, the Netherlands., van Sonsbeek D; D-Sight B.V., Maastricht, the Netherlands., van Sonsbeek R; D-Sight B.V., Maastricht, the Netherlands., van der Hulst R; Department of Plastic and Reconstructive Surgery, Maastricht University Medical Center+, Maastricht, the Netherlands., van Langen H; Department of Medical Physics and Devices, VieCuri Medical Centre, Venlo, the Netherlands.
Jazyk:	angličtina
Zdroj:	Medical devices (Auckland, N.Z.) [Med Devices (Auckl)] 2023 Apr 20; Vol. 16, pp. 101-110. Date of Electronic Publication: 2023 Apr 20 (Print Publication: 2023).
DOI:	10.2147/MDER.S401060
Abstrakt:	Purpose: High accuracy volume measurements have important implications in different medical and non-medical situations. All methods used to date have challenges to achieve a usable clinical accuracy. Moreover, current methods have limitations to measure segmental volumes. We developed a new device that is able to measure a continuous profile of the cross-sectional areas along an object. Herewith the total volume of an object or any part of it are correspondingly determined. Methods: The Peracutus Aqua Meth (PAM) generates continuous profiles of cross-sectional areas. Water is pumped in or out of a measuring unit at a nearly fixed flow rate and the speed of the water level ( dh / dt ) is measured continuously using a pressure sensor at the bottom. The change of the water level is a measure for the cross-sectional area of an object at any height. Signal processing is required to obtain valuable measurements. Three static objects and an arm of a test object were measured to demonstrate the accuracy and repeatability of the new device. Results: Cross-sectional areas of a PVC pipe obtained with the PAM and with a caliper were compared. The differences between the two methods were less than 1.3%. Volume measurements of two mannequin arms show standard deviations of 0.37% and 0.34%, respectively, whereas the standard deviation of the volume measurement of a genuine arm was only 1.07%. These figures surpass reported clinical accuracy. Conclusion: The new device demonstrates that determining the cross-section and its volumes of objects is possible in an accurate, reliable, and objective way. The results show that segmental volume measurements of human limbs are possible. Application in clinical and non-clinical situations seems meaningful. Competing Interests: FH is owner of Peracutus B.V. This company is developing a medical device to assess (local) volume changes in limbs and other objects. DvS is closely related to Peracutus B.V whereas J.S. was co-owner of Peracutus B.V. This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors. Dr Frans Houwen has a patent EP3128910B1 issued to Peracutus Holding B.V., and a patent US10895453B2 issued to Peracutus Holding B.V. The authors report no other conflicts of interest in this work. (© 2023 Houwen et al.)
Databáze:	MEDLINE
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