Duplexsonographie der Lebergefäße - eine Übersicht

Abstract

Hepatic blood flow has been investigated using color Doppler ultrasonography in patients with liver disease, especially in patients with portal hypertension (e. g. liver cirrhosis, portal vein thrombosis, Budd-Chiari-syndrome). Duplex examination protocols, however, differ considerably because no standard technique has been established so far. Whereas there is an agreement about the angle of the ultrasound application (< 60 degrees ), neither the exact location nor the relevant examination parameters have been standardized. Based on a search of the relevant literature, published examination techniques and results were analyzed. These findings are to serve as a basis for a prospective multicenter study for the determination of standard values.

Ultrasound findings in peliosis hepatis

“…On color Doppler, it is possible to detect intra-lesional flow with typical low resistive indices on spectral Doppler [ 22 ]. Focal PH should be suspected when an incidentally detected focal liver lesion shows no specific ultrasound findings that clearly favor the diagnosis of a common tumor-like hepatic lesion [ 23 ]. The lack of a mass effect would be an even more strongly supportive finding.…”

Quantification of Portal Vein Vascularization Using an Automated Post-Processing Video Analysis Tool

“…Explanations remain highly speculative at this stage, but normal blood flow may still reflect fully compensated liver disease. Another reason could be that despite the highly standardized examination conditions, the influence of portal vein vascularization varies and the range of a “standard value” of the peak velocity is huge 33 34 .…”

Liver Function, Quantified by LiMAx Test, After Major Abdominal Surgery. Comparison Between Open and Laparoscopic Approach

“…training, learning curve). Despite the lack of standardization, technique and normal range were used according to the results of studies, representing the current state of the literature [31].…”