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Titolo:
Effect of power Doppler and digital subtraction techniques on the comparison of myocardial contrast echocardiography with SPECT
Autore:
Haluska, B; Case, C; Short, L; Anderson, J; Marwick, TH;
Indirizzi:
Univ Queensland, Dept Med, Princess Alexandra Hosp, Brisbane, Qld 4102, Australia Univ Queensland Brisbane Qld Australia 4102 Brisbane, Qld 4102, Australia
Titolo Testata:
HEART
fascicolo: 5, volume: 85, anno: 2001,
pagine: 549 - 555
SICI:
1355-6037(200105)85:5<549:EOPDAD>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
EMISSION COMPUTED-TOMOGRAPHY; CORONARY-ARTERY DISEASE; PROGNOSTIC VALUE; TC-99M SESTAMIBI; PERFUSION; ACCURACY; STRESS; MICROBUBBLES; ULTRASOUND; RISK;
Keywords:
myocardial contrast echo; SPECT; coronary artery disease; dipyridamole stress;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Marwick, TH Univ Queensland, Dept Med, Princess Alexandra Hosp, Ipswich Rd, Brisbane, Qld 4102, Australia Univ Queensland Ipswich Rd Brisbane Qld Australia 4102 stralia
Citazione:
B. Haluska et al., "Effect of power Doppler and digital subtraction techniques on the comparison of myocardial contrast echocardiography with SPECT", HEART, 85(5), 2001, pp. 549-555

Abstract

Objective-To compare the accuracy and feasibility of harmonic power Doppler and digitally subtracted colour coded grey scale imaging for the assessment of perfusion defect severity by single photon emission computed tomography (SPECT) in an unselected group of patients. Design-Cohort study. Setting-Regional cardiothoracic unit. Patients-49 patients (mean (SD) age 61 (11) years; 27 women, 22 men) with known or suspected coronary artery disease were studied with simultaneous myocardial contrast echo (MCE) and SPECT after standard dipyridamole stress. Main outcome measures-Regional myocardial perfusion by SPECT, performed with Tc-99m tetrafosmin, scored qualitatively and also quantitated as per cent maximum activity. Results-Normal perfusion was identified by SPECT in 225 of 270 segments (83%). Contrast echo images were interpretable in 92% of patients. The proportion of normal MCE by grey scale, subtracted, and power Doppler techniques were respectively 76%, 74%, and 88% (p < 0.05) at > 80% of maximum counts, compared with 65%, 69%, and 61% at < 60% of maximum counts. For each technique, specificity was lowest in the lateral wail, although power Doppler wasthe least affected. Grey scale and subtraction techniques were least accurate in the septal wall, but power Doppler showed particular problems in theapex. On a per patient analysis, the sensitivity was 67%, 75%, and 83% fordetection of coronary artery disease using grey scale, colour coded, and power Doppler, respectively, with a significant difference between power Doppler and grey scale only (p < 0.05). Specificity was also the highest for power Doppler, at 55%, but not significantly different from subtracted colour coded images. Conclusions-Myocardial contrast echo using harmonic power Doppler has greater accuracy than with grey scale imaging and digital subtraction. However,power Doppler appears to be less sensitive for mild perfusion defects.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 17/09/19 alle ore 23:24:38