Abstract
Purpose
We assessed the usefulness of contrast-enhanced magnetic resonance cholangiography (CE-MRC) with liver-specific contrast agent in evaluating the biliary tree after hepatic surgery.
Materials and methods
A total of 142 patients with suspected biliary complications after liver surgery underwent hepatobiliary MR before and after administration of gadolinium ethoxy benzylic diethylenetriamine pentaacetic acid (Gd-EOB-DTPA). Unenhanced MR cholangiopancreatography (MRCP) and postcontrast MRC were obtained in all patients. Blinded image evaluation and semiquantitative analysis comparing MRCP and CE-MRC were performed by two experienced radiologists.
Results
In all cases, optimal postcontrast visualisation of the biliary tract was obtained. In 22 patients, a postsurgical biliary complication was confirmed. MRCP detected 64% of lesions, but in 36% of cases, an alteration was only suspected but not clearly defined. CE-MRC allowed definite diagnosis in 100% of cases.
Conclusions
Hepatobiliary-specific contrast agents allow for accurate and extensive study of biliary tract alterations, especially in assessing postsurgical complications.
Riassunto
Obiettivo
Scopo del nostro lavoro è valutare l’utilità della colangio-risonanza magnetica (RM) con mezzo di contrasto epatospecifico (CE-MRC) nello studio delle complicanze post-chirurgia epatica.
Materiali e metodi
Sono stati valutati 142 pazienti sottoposti ad intervento di chirurgia epatica con sospette complicanze biliari con colangio-pancreato-RM (MRCP) e sequenze post-contrasto con somministrazione di gadolinio-acido etossi-benzil-dietilen-triamino-pentaacetico (Gd-EOB-DTPA). Due radiologi con decennale esperienza specifica hanno valutato in cieco le immagini ottenute dalla MRCP e quelle della CE-MRC con analisi semiquantitativa dei reperti.
Risultati
In tutti i casi si è ottenuta adeguata visualizzazione biliare dopo somministrazione di mezzo di contrasto (MdC). ventidue dei 142 casi esaminati hanno mostrato complicanze biliari post-chirurgiche. La MRCP ha rilevato il 64% delle lesioni, ma nel 36% dei casi ha permesso solo di sospettare un’alterazione, senza consentire una definizione dirimente. La CE-MRC ha consentito una diagnosi certa nel 100% dei casi.
Conclusioni
L’uso di MdC ad escrezione epatobiliare consente uno studio accurato e panoramico delle alterazioni delle vie biliari, specie nelle complicanze postchirurgiche.
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Salvolini, L., Urbinati, C., Valeri, G. et al. Contrast-enhanced MR cholangiography (MRCP) with GD-EOB-DTPA in evaluating biliary complications after surgery. Radiol med 117, 354–368 (2012). https://doi.org/10.1007/s11547-011-0731-4
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DOI: https://doi.org/10.1007/s11547-011-0731-4