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Titolo:
Harmonic imaging: echocardiographic enhanced contrast intensity and duration
Autore:
Allen, MR; Pellikka, PA; Villarraga, HR; Klarich, KW; Foley, DA; Mulvagh, SL; Seward, JB;
Indirizzi:
Mayo Clin & Mayo Fdn, Div Cardiovasc Dis & Internal Med, Rochester, MN 55905 USA Mayo Clin & Mayo Fdn Rochester MN USA 55905 Med, Rochester, MN 55905 USA
Titolo Testata:
INTERNATIONAL JOURNAL OF CARDIAC IMAGING
fascicolo: 3, volume: 15, anno: 1999,
pagine: 215 - 220
SICI:
0167-9899(199906)15:3<215:HIEECI>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
AGENT; VISUALIZATION; SHU-508-A; PERFUSION; FLOW;
Keywords:
contrast echocardiography; contrast media; harmonic imaging; left ventricular cavity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Pellikka, PA Mayo Clin & Mayo Fdn, Div Cardiovasc Dis & Internal Med, 200 1St St Sw, Rochester, MN 55905 USA Mayo Clin & Mayo Fdn 200 1St St Sw Rochester MN USA 55905 USA
Citazione:
M.R. Allen et al., "Harmonic imaging: echocardiographic enhanced contrast intensity and duration", INT J CAR I, 15(3), 1999, pp. 215-220

Abstract

The intensity and duration of contrast effect within the left ventricular cavity after an intravenous bolus of Levovist Injection were observed with both harmonic and fundamental imaging in nine patients with known or suspected coronary artery disease. Contrast intensity was assessed by a qualitative grading system (0, none; 1, weak; 2, moderate; 3, good) and by videodensitometric analysis of pixel intensity. Duration of left ventricular contrast effect was determined by measuring time from the initial visual appearance of contrast agent to its disappearance. The mean increase in pixel intensity within the left ventricular cavity from precontrast to peak contrast was significantly greater for second harmonic than for fundamental imaging (25.5 vs 7.1; P < 0.012). The mean contrast intensity qualitative score with harmonic imaging was higher (2.6 +/- 0.73 vs 1.2 +/- 0.44; P < 0.01) and the duration of contrast effect was longer (242 +/- 131 s vs 53 +/- 33 s; P <0.004). Second harmonic imaging significantly enhanced contrast intensity and prolonged visible duration of contrast effect after a peripheral venousinjection of Levovist.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/09/20 alle ore 18:50:32