Die zerebrale Venenthrombose ist potenziell reversibel, sofern sie umgehend und in
geeigneter Weise diagnostiziert und behandelt wird. Da die klinischen Manifestationen
unspezifisch sind, kommt der bildgebenden Diagnostik dabei eine wichtige Rolle zu.
Der Beitrag beschreibt deshalb die verschiedenen Subtypen der zerebralen Venenthrombose
mit den für sie typischen bildgebenden Befunden sowie die Eignung der verschiedenen
Bildgebungstechniken.
Abstract
Cerebral venous thrombosis (CVT) is uncommon, representing approximately 0,5 % of
all cases of cerebrovascular disease worldwide. Many factors, alone or combined, can
cause CVT. Although CVT can occur at any age, it most commonly affects neonates and
young adults. CVT is difficult to diagnose clinically because patients can present
with a wide spectrum of nonspecific manifestations, the most common of which are headache
in 89 – 91 %, focal deficits in 52 – 68 %, and seizures in 39 – 44 % of patients.
Consequently, imaging is fundamental to its diagnosis. MRI is the most sensitive and
specific technique for diagnosis of CVT. The different MRI sequences, with and without
the use of contrast material, have variable strengths. Contrast material-enhanced
MR venography has the highest accuracy compared with sequences without contrast enhancement.
Schlüsselwörter
Zerebrale Venenthrombose - Anatomie des zerebralen Venensystems - Bildgebung - Fallstricke
Keywords
Cerebral venous thrombosis - anatomy of the cerebral venous system - imaging techniques
- pitfalls