. "\u017Ditn\u00FD, Rudolf" . "M\u011B\u0159en\u00ED rychlosti pulsn\u00ED vlny v lidsk\u00FDch tepn\u00E1ch je d\u016Fle\u017Eit\u00E9 ze dvou d\u016Fvod\u016F: v\u010Dasn\u00E9 diagnostiky atheroskler\u00F3zy a identifikace materi\u00E1lov\u00FDch vlastnost\u00ED c\u00E9vn\u00ED st\u011Bny pro numerick\u00E9 modely. Rychlost pulsn\u00ED vlny v c\u00E9v\u00E1ch nen\u00ED konstantn\u00ED a klasick\u00E1 metoda m\u011B\u0159en\u00ED \u010Dasov\u00E9ho posunu tlakov\u00E9 vlny mezi dv\u011Bma body je nedostate\u010Dn\u00E1. Uva\u017Eujeme o t\u0159ech metod\u00E1ch m\u011B\u0159en\u00ED: optick\u00E9m m\u011B\u0159en\u00ED posuv\u016F c\u00E9vn\u00ED st\u011Bny v n\u011Bkolika bodech kamerou s vysokou sn\u00EDmkovac\u00ED frekvenc\u00ED, kontinu\u00E1ln\u00ED optick\u00E9 m\u011B\u0159en\u00ED posuv\u016F c\u00E9vn\u00ED st\u011Bny korel\u00E1torem Q-450 a m\u011B\u0159en\u00ED pr\u016Ftoku a posunut\u00ED ultrazvukem. Prvn\u00ED metoda je schopna ur\u010Dit pouze pr\u016Fm\u011Brn\u00E9 rychlosti pulsn\u00ED vlny mezi m\u011B\u0159\u00EDc\u00EDmi body. Oproti tomu, korel\u00E1tor se dv\u011Bma vysokorychlostn\u00EDmi kamerami rekonstruuje 3D posuvy s velmi dobr\u00FDm rozli\u0161en\u00EDm. Ultrazvukov\u00E1 metoda vyu\u017E\u00EDv\u00E1 kombinace Dopplerovsk\u00E9ho ultrazvuku a tzv. B-scanu. P\u0159\u00EDstroje pou\u017E\u00EDvan\u00E9 v medic\u00EDn\u011B v\u0161ak v\u011Bt\u0161inou nemaj\u00ED datov\u00E9 v\u00FDstup a to zhor\u0161uje kvalitu rozli\u0161en\u00ED."@cs . . "Optimization of the PWV Measurement in Arteries" . "6"^^ . "Praha" . . "RIV/68407700:21220/06:02121223!RIV07-GA0-21220___" . "4"^^ . "Optimization of the PWV Measurement in Arteries"@en . "displacement measurement; optical method; pulse wave velocity; ultrasound"@en . "Optimalizace m\u011B\u0159en\u00ED rychlosti pulzn\u00ED vlny v tepn\u00E1ch"@cs . "4"^^ . . . . "21220" . . "2006-10-06+02:00"^^ . "Optimalizace m\u011B\u0159en\u00ED rychlosti pulzn\u00ED vlny v tepn\u00E1ch"@cs . . . . . "Chlup, Hynek" . . "490936" . "Measurements of the pulse wave velocity (PWV) in human arteries are important for two different reasons: an early diagnostics of atherosclerosis and identification of material properties of the vessel wall for numerical simulations. The PWV in blood vessels is not constant and classical methods of pressure wave shift between two points are not sufficient. We consider three methods: optical measurements of vessel wall displacement in several points by high speed camera, continual optical measurements of vessel wall displacement by correlator Q-450 and measurements of flow rate and displacements by ultrasonic device. The first method can determine the PWV only between several points. The second method can show 3D reconstruction of displacements with very good resolution. The ultrasound measurements need combination of Doppler ultrasound velocimetry and B-scan imagining. However, the common devices used in medicine do not have any data output. It causes bad resolution."@en . . "RIV/68407700:21220/06:02121223" . "Optimization of the PWV Measurement in Arteries" . "Summer Workshop of Applied Mechanics 2006" . "80-01-03453-4" . "FME CTU in Prague" . "[1F3647379CAB]" . . "Measurements of the pulse wave velocity (PWV) in human arteries are important for two different reasons: an early diagnostics of atherosclerosis and identification of material properties of the vessel wall for numerical simulations. The PWV in blood vessels is not constant and classical methods of pressure wave shift between two points are not sufficient. We consider three methods: optical measurements of vessel wall displacement in several points by high speed camera, continual optical measurements of vessel wall displacement by correlator Q-450 and measurements of flow rate and displacements by ultrasonic device. The first method can determine the PWV only between several points. The second method can show 3D reconstruction of displacements with very good resolution. The ultrasound measurements need combination of Doppler ultrasound velocimetry and B-scan imagining. However, the common devices used in medicine do not have any data output. It causes bad resolution." . . "\u010Cesk\u00E9 vysok\u00E9 u\u010Den\u00ED technick\u00E9 v Praze. Fakulta strojn\u00ED" . . "P(GA106/04/1181), Z(AV0Z2076919), Z(MSM6840770012)" . . . . . . "74 ; 79" . "Mackov\u00E1, Hana" . "Optimization of the PWV Measurement in Arteries"@en . . . "Hulan, Martin" .