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Titolo:
Quantitative comparison of tumor vascularity of hepatocellular carcinoma after intravenous contrast agent: conventional versus harmonic power DopplerUS
Autore:
Park, SH; Kim, TK; Lee, KH; Kim, AY; Choi, JI; Han, JK; Choi, BI;
Indirizzi:
Seoul Natl Univ, Coll Med, Dept Radiol, Chongno Gu, Seoul 110744, South Korea Seoul Natl Univ Seoul South Korea 110744 o Gu, Seoul 110744, South Korea
Titolo Testata:
ABDOMINAL IMAGING
fascicolo: 2, volume: 26, anno: 2001,
pagine: 178 - 183
SICI:
0942-8925(200103/04)26:2<178:QCOTVO>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
BREAST-TUMORS; ULTRASOUND; SONOGRAPHY; LIVER; VASCULATURE; SIGNALS;
Keywords:
liver neoplasm US; ultrasound, contrast media; ultrasound, power Doppler studies; ultrasound, comparative studies;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Choi, BI Seoul Natl Univ, Coll Med, Dept Radiol, Chongno Gu, 28 Yongon Dong, Seoul 110744, South Korea Seoul Natl Univ 28 Yongon Dong Seoul South Korea 110744 th Korea
Citazione:
S.H. Park et al., "Quantitative comparison of tumor vascularity of hepatocellular carcinoma after intravenous contrast agent: conventional versus harmonic power DopplerUS", ABDOM IMAG, 26(2), 2001, pp. 178-183

Abstract

Background: The purpose of this study was to make a quantitative comparison between conventional and harmonic power Doppler (PD) ultrasound (US) in depicting vascularity of hepatocellular carcinoma (HCC). Methods: Ten nodular HCCs in 10 patients were prospectively examined usinga 2-4-MHz convex transducer and a standardized examination protocol. Serial US images were obtained before and 20, 30, 40, 50, 60, 90, 120, 150, 180,240, and 300 s after intravenous injection of 2 g of contrast agent using conventional and harmonic PD US. The percentage of area with Doppler signalwithin each HCC nodule (%PDA) was calculated in each image with a PC-basedimage analysis program, and the results with both US techniques were compared. Results: In the majority of cases, %PDA was greater on conventional PD US than on harmonic PD US. Mean %PDA of 10 HCCs was significantly higher on conventional PD US than on harmonic PD US except at 20 s after injection. Thehighest values of mean %PDA were 34.9% in conventional PD US and 19.5% in harmonic PD US at 60 s after injection. Conclusion: Area with PD signals within the HCC is smaller and the duration of effective enhancement is shorter in harmonic PD US than in conventional PD US.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 12:51:30