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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060 EISSN: 1678-8060
Vol. 105, No. 4, 2010, pp. 409-413
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Bioline Code: oc10071
Full paper language: English
Document type: Research Article
Document available free of charge
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Memórias do Instituto Oswaldo Cruz, Vol. 105, No. 4, 2010, pp. 409-413
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Interobserver variability of ultrasound parameters in portal hypertension
Sebastianes, Patricia Moreno; Sales, Danilo Moulin; Santos, José Eduardo Mourão; Leão, Alberto Ribeiro de Souza; da Costa, Juliana Dantas; Takemoto, Kenji; Capobianco, Júlia; Bezerra, Alexandre Sérgio de Araújo & D’Ippolito, Giuseppe
Abstract
The aim of this study was to assess interobserver agreement of ultrasound parameters for portal hypertension in
hepatosplenic mansonic schistosomiasis. Spleen size, diameter of the portal, splenic and superior mesenteric veins
and presence of thrombosis and cavernous transformation were determined by three radiologists in blinded and
independent fashion in 30 patients. Interobserver agreement was measured by the kappa index and intraclass
correlation coefficient. Interobserver agreement was considered substantial (κ = 0.714-0.795) for portal vein thrombosis
and perfect (κ = 1) for cavernous transformation. Interobserver agreement measured by the intraclass correlation
coefficient was excellent for longitudinal diameter of the spleen (r = 0.828-0.869) and splenic index (r = 0.816-0.905)
and varied from fair to almost perfect for diameter of the portal (r = 0.622-0.675), splenic (r = 0.573-0.913) and
superior mesenteric (r = 0.525-0.607) veins. According to the results, ultrasound is a highly reproducible method for
the main morphological parameters of portal hypertension in schistosomiasis patients.
Keywords
schistosomiasis - ultrasound - portal hypertension - spleen
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