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Titolo:
Radio-frequency ablation of liver tumors: Assessment of therapeutic response and complications
Autore:
Choi, H; Loyer, EM; DuBrow, RA; Kaur, H; David, CL; Huang, S; Curley, S; Charnsangavej, C;
Indirizzi:
Univ Texas, MD Anderson Canc Ctr, Div Diagnost Imaging, Houston, TX 77030 USA Univ Texas Houston TX USA 77030 v Diagnost Imaging, Houston, TX 77030 USA Univ Texas, MD Anderson Canc Ctr, Div Surg Oncol, Houston, TX 77030 USA Univ Texas Houston TX USA 77030 tr, Div Surg Oncol, Houston, TX 77030 USA
Titolo Testata:
RADIOGRAPHICS
, volume: 21, anno: 2001,
pagine: S41 - S54
SICI:
0271-5333(200110)21:<S41:RAOLTA>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
SMALL HEPATOCELLULAR-CARCINOMA; RADIOFREQUENCY ABLATION; HEPATIC METASTASES; ETHANOL INJECTION; THERMAL ABLATION; FOLLOW-UP; CT; MANAGEMENT; MALIGNANCY;
Keywords:
liver neoplasms; liver neoplasm; liver neoplasms, therapy; radiofrequency (RF) ablation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Loyer, EM Univ Texas, MD Anderson Canc Ctr, Div Diagnost Imaging, 1515 Holcombe Blvd,Box 57, Houston, TX 77030 USA Univ Texas 1515 Holcombe Blvd,Box 57 Houston TX USA 77030 30 USA
Citazione:
H. Choi et al., "Radio-frequency ablation of liver tumors: Assessment of therapeutic response and complications", RADIOGRAPHI, 21, 2001, pp. S41-S54

Abstract

An alternative to surgical resection of liver tumors, radio-frequency ablation induces in situ thermal coagulation necrosis through the delivery of high-frequency alternating current to the tissues. Imaging helps to detect treatable lesions, guide the placement of the probe, and assess the effect of therapy. Computed tomography (CT) is used most frequently to determine whether the ablation is complete and to screen for early recurrences that maybenefit from reablation. Complete ablation creates an area of necrosis that, at CT, is of low attenuation compared with the surrounding liver tissue,is often homogeneous, and has smooth margins. The most important features are the size of the necrotic defect, which, immediately after treatment, should be larger than that of the pretreatment tumor, and the sharpness of the margins, which indicates an abrupt change in attenuation between the necrotic tissue and surrounding liver tissue. Enhancement, when present, is dueto perfusion abnormality or granulation tissue and forms a regular rim or a homogeneous zone at the margin of the defect. It is seen immediately after ablation but may be prolonged. Enhancement is affected by the scanning technique. Over time, the size of the defect remains stable or decreases. Anyvariation from this general pattern is suggestive of incomplete ablation or recurrence.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 09:19:37