transiente Intensitätsunterschiede der Leber
Transient
hepatic intensity difference • Transient hepatic attenuation difference secondary to portal vein thrombosis - Ganzer Fall bei Radiopaedia
Transient hepatic intensity differences (THIDs) are a phenomenon observed on MRI imaging of the liver. They are considered a direct equivalent to transient hepatic attenuation differences (THADs) noted on CT. They may be focal or nonfocal.
Pathology
Focal lesions
A focal THID lesion can arise from four pathological mechanisms
- directly by a siphoning effect (lobar multisegmental shape)
- indirectly by means of portal hypoperfusion (sectorial shape) due to portal branch compression or infiltration
- by thrombosis resulting in a portal branch blockade
- by flow diversion caused by an arterioportal shunt
Nonfocal lesions
These can be sectorial, polymorphous or diffuse and can arise from a variety of etiologies.
Siehe auch:
Assoziationen und Differentialdiagnosen zu transiente Intensitätsunterschiede der Leber:
transiente
Dichteunterschiede in der Leber