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Titolo:
Vascularity of hepatocellular carcinoma: Assessment with contrast-enhancedsecond-harmonic versus conventional power Doppler US
Autore:
Choi, BI; Kim, TK; Han, JK; Kim, AY; Seong, CK; Park, SJ;
Indirizzi:
Seoul Natl Univ Hosp, Dept Radiol, Chongno Gu, Seoul 110744, South Korea Seoul Natl Univ Hosp Seoul South Korea 110744 Seoul 110744, South Korea Seoul Natl Univ Hosp, Inst Radiat Med, Chongno Gu, Seoul 110744, South Korea Seoul Natl Univ Hosp Seoul South Korea 110744 Seoul 110744, South Korea
Titolo Testata:
RADIOLOGY
fascicolo: 2, volume: 214, anno: 2000,
pagine: 381 - 386
SICI:
0033-8419(200002)214:2<381:VOHCAW>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
COLOR-DOPPLER; LIVER-TUMORS; SONOGRAPHY; AGENTS; ULTRASOUND; ANGIOGRAPHY;
Keywords:
liver neoplasms, blood supply; liver neoplasms, US; ultrasound (US), artifact; ultrasound (US), comparative studies; ultrasound (US), contrast media; ultrasound (US), harmonic study; ultrasound (US), power Doppler;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Choi, BI Seoul Natl Univ Hosp, Dept Radiol, Chongno Gu, 28 Yongon Dong, Seoul 110744, South Korea Seoul Natl Univ Hosp 28 Yongon Dong Seoul South Korea 110744 rea
Citazione:
B.I. Choi et al., "Vascularity of hepatocellular carcinoma: Assessment with contrast-enhancedsecond-harmonic versus conventional power Doppler US", RADIOLOGY, 214(2), 2000, pp. 381-386

Abstract

PURPOSE: To compare contrast material-enhanced harmonic power Doppler ultrasonography (US) with conventional power Doppler US in depicting the vascularity of hepatocellular carcinoma (HCC). MATERIALS AND METHODS: Twenty patients with nodular HCCs (2.6-13.2 cm in diameter; mean diameter, 4.8 cm) were prospectively examined with both conventional and harmonic power Doppler US. US was performed with a 2-4-MHz curved linear-array transducer according to a standard examination protocol (1,000-Hz pulse repetition frequency, medium wall filter, and power gain of 55%-84% for conventional power Doppler US; 700-Hz pulse repetition frequency,low wall filter, and power gain of 95%-98% for harmonic power Doppler US). Serial, dynamic scans were obtained before intravenous injection of the contrast agent (SH U 508A) and at 30, 60, 90, 120, 180, 240, and 300 seconds after injection with both techniques. RESULTS: The number of intratumoral power Doppler US signals was similar with both techniques at 30-90 seconds after contrast agent injection; however, after 90 seconds, conventional power Doppler US depicted significantly more signals than did harmonic power Doppler US. Harmonic power Doppler US was superior to conventional power Doppler US in terms of power Doppler artifacts such as "blooming" or motion-related artifacts. CONCLUSION: Although the effective enhancement duration is relatively short compared with that for conventional power Doppler US, contrast-enhanced harmonic power Doppler US can be effective in evaluating the vascularity of HCCs because of the advantage of fewer power Doppler artifacts.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/06/20 alle ore 00:02:54