In vitro estimation of red blood cells' aggregation using ultrasound Doppler techniques

Aggelopoulos, EG; Karabetsos, E; Koutsouris, D

dc.contributor.author	Aggelopoulos, EG	en
dc.contributor.author	Karabetsos, E	en
dc.contributor.author	Koutsouris, D	en
dc.date.accessioned	2014-03-01T01:12:59Z
dc.date.available	2014-03-01T01:12:59Z
dc.date.issued	1997	en
dc.identifier.issn	1386-0291	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12314
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0030735187&partnerID=40&md5=cafaeffbf0ceaa48ad5f855f2af9f069	en
dc.subject	Erythrocyte aggregation	en
dc.subject	In vitro	en
dc.subject	PW Doppler ultrasound	en
dc.subject.classification	Hematology	en
dc.subject.classification	Peripheral Vascular Disease	en
dc.subject.other	article	en
dc.subject.other	blood rheology	en
dc.subject.other	capillary flow	en
dc.subject.other	doppler echography	en
dc.subject.other	erythrocyte aggregation	en
dc.subject.other	human	en
dc.subject.other	human cell	en
dc.subject.other	in vitro study	en
dc.subject.other	Dextrans	en
dc.subject.other	Erythrocyte Aggregation	en
dc.subject.other	Hematocrit	en
dc.subject.other	Hematology	en
dc.subject.other	Hemorheology	en
dc.subject.other	Humans	en
dc.subject.other	Ultrasonography, Doppler	en
dc.title	In vitro estimation of red blood cells' aggregation using ultrasound Doppler techniques	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	Aggregation of red blood cells (RBCs) is one of the principal hemorheological factors which plays an important role in capillary circulation. In order to study RBC's aggregation, an ultrasound Doppler in vitro technique, using pulsed wave monoelement pencil 4 MHz probes, was designed. A hydraulic pump system has been implemented, using an electric step motor that establishes in a certain distance, a laminar blood flow profile into a rectangular cross-section plexiglass tube. Blood coming from blood collection bags was used and following certain typical measuring protocols, red blood cells' samples of various parameters and conditions were acquired. Adding dextrans to the blood samples, red blood cells aggregation was achieved and observed for various hematocrit values. Both the emitted and the backscattered signals were driven to a system containing a multi-channel digital oscilloscope - of high sampling rate and processing capabilities - and a powerful PC with a high acquisition A/D card and special control software. The estimation of mean aggregates size - by measuring the mean ultrasonic intensity scattered by the blood sample - led us to a qualitative, in vitro ultrasonic method.	en
heal.publisher	IOS PRESS	en
heal.journalName	Clinical Hemorheology and Microcirculation	en
dc.identifier.isi	ISI:000072471000002	en
dc.identifier.volume	17	en
dc.identifier.issue	2	en
dc.identifier.spage	107	en
dc.identifier.epage	115	en