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1. (WO2017033098) SPECTRAL DOPPLER PROCESSING WITH ADAPTIVE SAMPLE WINDOW SIZE
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Pub. No.: WO/2017/033098 International Application No.: PCT/IB2016/054942
Publication Date: 02.03.2017 International Filing Date: 18.08.2016
IPC:
A61B 8/06 (2006.01) ,A61B 8/08 (2006.01) ,G01S 15/89 (2006.01) ,A61B 8/00 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
8
Diagnosis using ultrasonic, sonic or infrasonic waves
06
Measuring blood flow
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
8
Diagnosis using ultrasonic, sonic or infrasonic waves
08
Detecting organic movements or changes, e.g. tumours, cysts, swellings
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
15
Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
88
Sonar systems, specially adapted for specific applications
89
for mapping or imaging
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
8
Diagnosis using ultrasonic, sonic or infrasonic waves
Applicants:
KONINKLIJKE PHILIPS N.V. [NL/NL]; High Tech Campus 5 5656 AE Eindhoven, NL
Inventors:
CLARK, David Wesley; NL
Agent:
STEFFEN, Thomas; NL
DE HAAN, Poul Erik; NL
Priority Data:
62/210,51827.08.2015US
Title (EN) SPECTRAL DOPPLER PROCESSING WITH ADAPTIVE SAMPLE WINDOW SIZE
(FR) TRAITEMENT DE DOPPLER SPECTRAL AVEC TAILLE DE FENÊTRE D'ÉCHANTILLON ADAPTATIVE
Abstract:
(EN) A spectral Doppler processor for an ultrasound system produces blood flow velocity estimates by processing a sequence of complex blood flow echo samples with an FFT algorithm. The FFT algorithm is executed with a long window of samples to produce velocity estimates with good velocity precision and is executed with a short window of samples to produce velocity estimates with good time precision. The long window algorithm is used when blood flow velocity is not changing rapidly, and the short window algorithm is used when blood flow velocity is changing rapidly.
(FR) La présente invention concerne un processeur de Doppler spectral pour un système à ultrasons, produisant des estimations de vitesse de flux sanguin en traitant une séquence d'échantillons d'écho de flux sanguin avec un algorithme FFT. L'algorithme FFT est exécuté avec une fenêtre longue d'échantillons pour produire des estimations de vitesse avec une bonne précision de vitesse et est exécuté avec une courte fenêtre d'échantillons pour produire des estimations de vitesse avec une bonne précision de durée. L'algorithme de fenêtre longue est utilisé lorsque la vitesse de flux sanguin ne change pas rapidement, et l'algorithme de fenêtre courte est utilisé lorsque la vitesse de flux sanguin change rapidement.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)