1. ARFI elastography in patients with chronic autoimmune liver diseases: A preliminary study
- Author
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V. Cipriano, Carla Serra, Fabio Cassani, Marco Lenzi, S. Righi, E Fiorini, C. De Molo, A.M. Morselli Labate, Luigi Muratori, S. Righi, E. Fiorini, C. De Molo, V. Cipriano, F. Cassani, L. Muratori, M. Lenzi, A.M. Morselli Labate, and C. Serra
- Subjects
Pathology ,medicine.medical_specialty ,Primary biliary cirrhosi ,business.industry ,Healthy subjects ,primary sclerosing cholangitis ,General Medicine ,Autoimmune hepatitis ,Autoimmune hepatiti ,medicine.disease ,Article ,ARFI Imaging ,Primary sclerosing cholangitis ,Arfi elastography ,Primary biliary cirrhosis ,Liver stiffness ,Internal Medicine ,medicine ,Radiology, Nuclear Medicine and imaging ,In patient ,business ,Autoimmune liver disease - Abstract
Acoustic radiation force impulse (ARFI) is a new software-based technique that evaluates liver stiffness during B-mode ultrasonography. The purpose of this study was to evaluate the accuracy of ARFI in distinguishing patients with chronic autoimmune liver disease from healthy subjects.We enrolled 9 adult patients (8 women, 1 man; age 48.1 ± 12.8 years) with chronic autoimmune disease (primary biliary cirrhosis (PBC, n = 3), autoimmune hepatitis (AIH, n = 2), primary sclerosing cholangitis (PSC, n = 1) and overlap syndromes, (n = 3) who underwent a liver biopsy and 11 healthy volunteers (age 34.7 ± 10.4 years; 7 women, 4 men). Liver stiffness was evaluated and expressed as the shear wave velocity (SWV) in m/sec. We used a US scanner Siemens-Acuson S2000, evaluating the right liver lobe and the left liver lobe.THE SWV WAS SIGNIFICANTLY HIGHER IN CASES (RIGHT LOBE: 1.51 ± 0.44; left lobe: 1.57 ± 0.40) than in controls (right lobe: 1.08 ± 0.10; left lobe: 1.12 ± 0.13) (right lobe: P = 0.002; left lobe: P = 0.013). We found no significant correlation between right and left lobe SWVs in cases (P = 0.779) or controls (P = 0.385). The SWV cut-off that best distinguished cases from controls was 1.25 m/sec (accuracy: AUC=0.885; sensitivity: 70.6%; specificity: 95.5%).ARFI elastography is a noninvasive ultrasonographic technique that can differentiate healthy subjects from patients with fibrotic stages of chronic liver disease.L'elastografia ARFI è una tecnologia integrata all'ultrasonografia convenzionale B-mode in grado di determinare la rigidità tissutale. L'obiettivo di questo studio è stato valutare se l'elastografia ARFI sia in grado di differenziare pazienti affetti da patologie epatiche croniche autoimmuni e soggetti normali.Sono stati arruolati 9 pazienti affetti da epatopatia cronica autoimmune sottoposti a biopsia epatica (età 48.1 ± 12.8 anni; femmine/maschi: 8/1; 3 PBC, 2 AIH, 1 PSC e 3 overlap) e 11 volontari sani (età 34.7 ± 10.4 anni; F/M: 7/4). La rigidità epatica è stata valutata mediante l'elastografia ARFI ed espressa come “shear wave velocity” (SWV) in m/sec. È stato utilizzato un ecografo Siemens-Acuson S2000 valutando entrambi i lobi epatici. Le misurazioni sono state eseguite a respiro bloccato, ad una profondità compresa tra 2 e 5 cm.La SWV è risultata significativamente più elevata nei casi (Dx: 1.51 ± 0.44; Sn: 1.57 ± 0.40) rispetto ai controlli (Dx: 1.08 ± 0.10; Sn: 1.12 ± 0.13) (Dx:L'elastografia ARFI è una metodica ultrasonografica utile nel differenziare soggetti sani da pazienti affetti da epatopatia cronica in evoluzione fibrotica.
- Published
- 2012
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