Interobserver variability of ultrasound parameters in portal hypertension.
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 (kappa = 0.714-0.795) for portal vein thrombosis and perfect (kappa = 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.
Sebastianes
Patricia Moreno
PM
Departamento de Diagnóstico por Imagens, Universidade Federal de São Paulo, São Paulo, SP, Brasil.
Sales
Danilo Moulin
DM
Santos
José Eduardo Mourão
JE
Leão
Alberto Ribeiro de Souza
AR
da Costa
Juliana Dantas
JD
Takemoto
Kenji
K
Capobianco
Júlia
J
Bezerra
Alexandre Sérgio de Araújo
AS
D'Ippolito
Giuseppe
G
D000328:Adult; D000368:Aged; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D006975:Hypertension, Portal / Q000000981:diagnostic imaging* / Q000209:etiology; D008109:Liver Diseases, Parasitic / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D009929:Organ Size; D011168:Portal System / Q000469:parasitology / Q000648:ultrastructure*; D011446:Prospective Studies; D015203:Reproducibility of Results; D012555:Schistosomiasis mansoni / Q000150:complications / Q000000981:diagnostic imaging*; D013158:Splenic Diseases / Q000000981:diagnostic imaging* / Q000469:parasitology; D018615:Ultrasonography, Doppler, Color; D020246:Venous Thrombosis / Q000000981:diagnostic imaging* / Q000469:parasitology