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Titolo:
THE NARROW-BAND HYPOTHESIS - AN INTERESTING APPROACH FOR HIGH-INTENSITY TRANSIENT SIGNALS (HITS) DETECTION
Autore:
ROY E; ABRAHAM P; MONTRESOR S; BAUDRY M; SAUMET JL;
Indirizzi:
CHU ANGERS,LAB PHYSIOL & EXPLORAT FONCT VASC F-49033 ANGERS 01 FRANCE CHU ANGERS,LAB PHYSIOL & EXPLORAT FONCT VASC F-49033 ANGERS 01 FRANCE UNIV MAINE,LAB INFORMAT F-72017 LE MANS FRANCE
Titolo Testata:
Ultrasound in medicine & biology
fascicolo: 3, volume: 24, anno: 1998,
pagine: 375 - 382
SICI:
0301-5629(1998)24:3<375:TNH-AI>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
DOPPLER ULTRASOUND SIGNALS; CAROTID ENDARTERECTOMY; TRANSCRANIAL DOPPLER; CEREBRAL EMBOLI; SIMULATION;
Keywords:
ULTRASOUND; EMBOLISM; DETECTION; MEASUREMENT; SENSITIVITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
E. Roy et al., "THE NARROW-BAND HYPOTHESIS - AN INTERESTING APPROACH FOR HIGH-INTENSITY TRANSIENT SIGNALS (HITS) DETECTION", Ultrasound in medicine & biology, 24(3), 1998, pp. 375-382

Abstract

We propose a new approach to detect microemboli automatically using the narrow band hypothesis, An initial database of 560 peripheral arterial Doppler high-intensity transient signals (HITS) was created to study microemboli and to define the normal Limits to be used in our method, When a HITS occurs, our approach consists of modelling the Doppler signal using amplitude and frequency wave modulation, A threshold was defined experimentally using this database and then applied to 38 recordings from 12 patients, Using another database, sis expert Doppler users reported 140, 176, 155, 161, 161 and 146 HITS, corresponding to a total of 197 different observed HITS, When an event was detected by 6,5, 4, 3, 2 and 1 of the observers, the sensitivity of the automatic detection was 94.8%, 75.9%, 55.6%, 42.9%, 30% and 0%, respectively, Thesensitivity of our automatic detection thus is highly associated withthe likelihood (defined as the ratio of observers in agreement to thetotal number of observers) of an event: r = 0.99 for p < 0.0001, Although future research would result in improvement of the specificity, the narrow band hypothesis appears to be a promising technique for the detection of HITS. (C) 1998 World Federation for Ultrasound in Medicine & Biology.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/21 alle ore 10:15:17