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Titolo:
SPIRAL CT DURING ARTERIAL PORTOGRAPHY
Autore:
LUPETIN AR; CAMMISA BA; BECKMAN I; DASH N; KHOURY MB; KIPROFF PM; MCKENZIE RS;
Indirizzi:
ALLEGHENY GEN HOSP,DEPT DIAGNOST RADIOL,320 E N AVE,ALLEGHENY CAMPUS PITTSBURGH PA 15212 MED COLL PENN & HAHNEMANN UNIV,SCH MED PITTSBURGH PA 15212
Titolo Testata:
Radiographics
fascicolo: 4, volume: 16, anno: 1996,
pagine: 723 - 743
SICI:
0271-5333(1996)16:4<723:SCDAP>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
FOCAL HEPATIC MASSES; COLORECTAL-CANCER; LIVER METASTASES; PREOPERATIVE EVALUATION; CONTRAST ENHANCEMENT; COMPUTED-TOMOGRAPHY; MESENTERIC-ARTERY; DELAYED CT; CARCINOMA; ANATOMY;
Keywords:
COMPUTED TOMOGRAPHY, (CT) HELICAL; LIVER NEOPLASMS, CT; LIVER NEOPLASMS, DIAGNOSIS; PORTOGRAPHY, TECHNOLOGY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
44
Recensione:
Indirizzi per estratti:
Citazione:
A.R. Lupetin et al., "SPIRAL CT DURING ARTERIAL PORTOGRAPHY", Radiographics, 16(4), 1996, pp. 723-743

Abstract

Spiral computed tomography (CT) performed during arterial portographyoffers several advantages compared with portographic studies based onconventional CT technique. Because all hepatic images are derived from a volume data set acquired during a single 24-32-second breath hold timed to coincide with the phase of peak hepatic enhancement, motion artifacts and section misregistration are eliminated and high liver-to-lesion attenuation value differences are present on all sections, These factors, in conjunction with the ability to retrospectively acquire thin, overlapping axial sections, result in improved lesion detection. The ability to produce high vein-to-liver attenuation value differences and two-dimensional multiplanar reconstructions simplifies the identification of hepatic segments and therefore lesion localization. A limitation of all CT portographic methods is the frequent occurrence of nontumorous perfusion defects that, in most cases, demonstrate characteristic locations and appearances. Performing delayed CT following portography is one method by which such pseudolesions may be characterized and differentiated from focal pathologic entities.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 06:29:17