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The hemodynamical effect of the collateral portosystemic circulation upon the portal system has not yet been fully understood. The US-Doppler made possible the non-invasive study of the portal system by evaluating the parameters: flow direction, diameter and flow velocity in it's vessels.

arquivos de gastroenterologia

Veia paraumbilical pérvia: importância hemodinâmica na hipertensão portal por esquistossomose mansônica hepatoesplênica. (Estudo com ultra-sonografia Doppler)