About: Comparison and evaluation of indicator dilution models for bolus of ultrasound contrast agents

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Dynamic contrast-enhanced ultrasound (DCE-US) imaging is a promising diagnostic method, which enables the evaluation of tissue perfusion via different parameters. The mean transit time and time-to-peak parameters are the main time parameters and their values depend on the model used for the approximation of the noisy perfusion curves. In this paper, we described a new comparison of different perfusion models using a tissue mimicking phantom. The following models were compared: log-normal, lagged, Erlang, Gamma and the local density random walk model. We discovered that the mean-square error is not the best criterion for model evaluation. More important is the comparison between the estimated time perfusion parameters and the physical parameters of the developed tissue mimicking phantom. Based on the statistical analysis, we can suggest that for the DCE-US perfusion analysis more models should be used, excluding the log-normal model, which gives the highest error of mean transit time value. Dynamic contrast-enhanced ultrasound (DCE-US) imaging is a promising diagnostic method, which enables the evaluation of tissue perfusion via different parameters. The mean transit time and time-to-peak parameters are the main time parameters and their values depend on the model used for the approximation of the noisy perfusion curves. In this paper, we described a new comparison of different perfusion models using a tissue mimicking phantom. The following models were compared: log-normal, lagged, Erlang, Gamma and the local density random walk model. We discovered that the mean-square error is not the best criterion for model evaluation. More important is the comparison between the estimated time perfusion parameters and the physical parameters of the developed tissue mimicking phantom. Based on the statistical analysis, we can suggest that for the DCE-US perfusion analysis more models should be used, excluding the log-normal model, which gives the highest error of mean transit time value. (en)
Title	Comparison and evaluation of indicator dilution models for bolus of ultrasound contrast agents Comparison and evaluation of indicator dilution models for bolus of ultrasound contrast agents (en)
skos:prefLabel	Comparison and evaluation of indicator dilution models for bolus of ultrasound contrast agents Comparison and evaluation of indicator dilution models for bolus of ultrasound contrast agents (en)
skos:notation	RIV/00216305:26220/13:PU102196!RIV14-MSM-26220___
http://linked.open...avai/riv/aktivita	I P S
http://linked.open...avai/riv/aktivity	I, P(ED1.100/02/0123), P(GAP102/12/2380), S
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Jiřík, Radovan Kolář, Radim Harabiš, Vratislav Mézl, Martin
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Fakulta elektrotechniky a komunikačních technologií
http://linked.open...dnocenehoVysledku	66124
http://linked.open...ai/riv/idVysledku	RIV/00216305:26220/13:PU102196
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Ultrasonography, Contrast agent, Perfusion analysis, Perfusion models (en)
http://linked.open.../riv/klicoveSlovo	Contrast agent Perfusion analysis Perfusion models Ultrasonography
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[7F742D4A7007]
http://linked.open...i/riv/nazevZdroje	PHYSIOLOGICAL MEASUREMENT
http://linked.open...in/vavai/riv/obor	JA
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Perfusion Analysis Using MRI and Ultrasound St. Anne´s University Hospital Brno - International Clinical Research Center (FNUSA-ICRC)
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	34
http://linked.open...iv/tvurceVysledku	Jiřík, Radovan Kolář, Radim Harabiš, Vratislav Mézl, Martin
http://linked.open...ain/vavai/riv/wos	000314287500004
issn	0967-3334
number of pages	12 (xsd:int)
http://localhost/t...ganizacniJednotka	26220

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