Introducing a Linear Gamma Variate Fit to Measure Pulmonary Perfusion with Electrical Impedance Tomography

The indicator dilution method (IDM) is one approach to measure pulmonary perfusion using Electrical Impedance Tomography (EIT). To be able to calculate perfusion parameters and to increase robustnes, it is necessary to approximate and then to separate the components of the measured signals. The comp...

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Autores principales:	Schuderer Felix, Kircher Michael, Dössel Olaf, Stender Birgit, Bluth Thomas, Gama de Abreu Marcelo
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2020
Materias:	electrical impedance tomography indicator dilution gamma variate least squares parameter optimization pulmonary perfusion Medicine R
Acceso en línea:	https://doaj.org/article/34723b5776e141cb94572ee6ddcce7f0
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id	oai:doaj.org-article:34723b5776e141cb94572ee6ddcce7f0
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spelling	oai:doaj.org-article:34723b5776e141cb94572ee6ddcce7f02021-12-05T14:10:42ZIntroducing a Linear Gamma Variate Fit to Measure Pulmonary Perfusion with Electrical Impedance Tomography2364-550410.1515/cdbme-2020-3089https://doaj.org/article/34723b5776e141cb94572ee6ddcce7f02020-09-01T00:00:00Zhttps://doi.org/10.1515/cdbme-2020-3089https://doaj.org/toc/2364-5504The indicator dilution method (IDM) is one approach to measure pulmonary perfusion using Electrical Impedance Tomography (EIT). To be able to calculate perfusion parameters and to increase robustnes, it is necessary to approximate and then to separate the components of the measured signals. The component referring to the passage of the injected bolus through the pixels can be modeled as a gamma variate function, its parameters are often determined using nonlinear optimization algorithms. In this paper, we introduce a linear approach that enables higher robustnes and faster computation, and compare the linear and nonlinear fitting approach on data of an animal study.Schuderer FelixKircher MichaelDössel OlafStender BirgitBluth ThomasGama de Abreu MarceloDe Gruyterarticleelectrical impedance tomographyindicator dilutiongamma variateleast squaresparameter optimizationpulmonary perfusionMedicineRENCurrent Directions in Biomedical Engineering, Vol 6, Iss 3, Pp 345-348 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	electrical impedance tomography indicator dilution gamma variate least squares parameter optimization pulmonary perfusion Medicine R
spellingShingle	electrical impedance tomography indicator dilution gamma variate least squares parameter optimization pulmonary perfusion Medicine R Schuderer Felix Kircher Michael Dössel Olaf Stender Birgit Bluth Thomas Gama de Abreu Marcelo Introducing a Linear Gamma Variate Fit to Measure Pulmonary Perfusion with Electrical Impedance Tomography
description	The indicator dilution method (IDM) is one approach to measure pulmonary perfusion using Electrical Impedance Tomography (EIT). To be able to calculate perfusion parameters and to increase robustnes, it is necessary to approximate and then to separate the components of the measured signals. The component referring to the passage of the injected bolus through the pixels can be modeled as a gamma variate function, its parameters are often determined using nonlinear optimization algorithms. In this paper, we introduce a linear approach that enables higher robustnes and faster computation, and compare the linear and nonlinear fitting approach on data of an animal study.
format	article
author	Schuderer Felix Kircher Michael Dössel Olaf Stender Birgit Bluth Thomas Gama de Abreu Marcelo
author_facet	Schuderer Felix Kircher Michael Dössel Olaf Stender Birgit Bluth Thomas Gama de Abreu Marcelo
author_sort	Schuderer Felix
title	Introducing a Linear Gamma Variate Fit to Measure Pulmonary Perfusion with Electrical Impedance Tomography
title_short	Introducing a Linear Gamma Variate Fit to Measure Pulmonary Perfusion with Electrical Impedance Tomography
title_full	Introducing a Linear Gamma Variate Fit to Measure Pulmonary Perfusion with Electrical Impedance Tomography
title_fullStr	Introducing a Linear Gamma Variate Fit to Measure Pulmonary Perfusion with Electrical Impedance Tomography
title_full_unstemmed	Introducing a Linear Gamma Variate Fit to Measure Pulmonary Perfusion with Electrical Impedance Tomography
title_sort	introducing a linear gamma variate fit to measure pulmonary perfusion with electrical impedance tomography
publisher	De Gruyter
publishDate	2020
url	https://doaj.org/article/34723b5776e141cb94572ee6ddcce7f0
work_keys_str_mv	AT schudererfelix introducingalineargammavariatefittomeasurepulmonaryperfusionwithelectricalimpedancetomography AT kirchermichael introducingalineargammavariatefittomeasurepulmonaryperfusionwithelectricalimpedancetomography AT dosselolaf introducingalineargammavariatefittomeasurepulmonaryperfusionwithelectricalimpedancetomography AT stenderbirgit introducingalineargammavariatefittomeasurepulmonaryperfusionwithelectricalimpedancetomography AT bluththomas introducingalineargammavariatefittomeasurepulmonaryperfusionwithelectricalimpedancetomography AT gamadeabreumarcelo introducingalineargammavariatefittomeasurepulmonaryperfusionwithelectricalimpedancetomography
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Introducing a Linear Gamma Variate Fit to Measure Pulmonary Perfusion with Electrical Impedance Tomography

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