Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Liver mass evaluation with ultrasound: The impact of microbubble contrast agents and pulse inversion imaging
Autore:
Wilson, SR; Burns, PN;
Indirizzi:
Univ Hlth Network, Toronto Gen Hosp, Sect Ultrasound, Toronto, ON M4N 3M5,Canada Univ Hlth Network Toronto ON Canada M4N 3M5 d, Toronto, ON M4N 3M5,Canada Univ Toronto, Sunnybrook & Womens Coll, Hlth Sci Ctr, Dept Med Biophys, Toronto, ON, Canada Univ Toronto Toronto ON Canada tr, Dept Med Biophys, Toronto, ON, Canada
Titolo Testata:
SEMINARS IN LIVER DISEASE
fascicolo: 2, volume: 21, anno: 2001,
pagine: 147 - 159
SICI:
0272-8087(200105)21:2<147:LMEWUT>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
US; ENHANCEMENT; EXPERIENCE; LEVOVIST; EMISSION; DOPPLER;
Keywords:
contrast agents; liver; neoplasm; pulse inversion imaging; ultrasound;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Wilson, SR Univ Hlth Network, Toronto Gen Hosp, Sect Ultrasound, Toronto, ON M4N 3M5,Canada Univ Hlth Network Toronto ON Canada M4N 3M5 ON M4N 3M5,Canada
Citazione:
S.R. Wilson e P.N. Burns, "Liver mass evaluation with ultrasound: The impact of microbubble contrast agents and pulse inversion imaging", SEM LIV DIS, 21(2), 2001, pp. 147-159

Abstract

Liver mass evaluation includes two essential elements-lesion detection andlesion characterization. Both of these are greatly improved on sonography with the addition of contrast agents and the use of specialized imaging techniques, particularly pulse inversion imaging. Ultrasound contrast agents are comprised of tiny microbubbles of gas that interact with the ultrasound beam producing an enhancement of the Doppler signal from blood. Pulse inversion imaging allows preferential detection of the signal from the microbubble agents with suppresion of the signal from background tissue. Two imagingtechniques include a low mechanical index (MI) nondestructive method to show lesional vascularity and a high MI destructive mode that produces disruption of the bubbles in a single frame. The latter allows for quantitative assessment of the relative enhancement of a lesion as compared with the adjacent liver parenchyma, which is a reflection of the relative vascular volumes. Vascular imaging has shown characteristic and reproducible features of common liver masses, including hemangioma, focal nodular hyperplasia, hepatocellular carcinoma, and liver metastases. Delayed postvascular enhancementof the normal liver, a phenomenon that is unique to certain classes of microbubble contrast agents, allows detection of more and smaller malignant lesions than on baseline.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 22:38:52