Aktuelle Bildgebung des Felsenbeins: CT versus MRT

Zusammenfassung

Die hoch auflösenden Schnittbildverfahren der CT und MRT sind die Methoden der Wahl zur differenzierten Erfassung von petrosalen Pathologien. Die Entscheidung für eine oder beide Tomographietechniken fällt in der Regel auf der Basis der Anamnese, des HNO-ärztlichen Status bzw. der klinischen Fragestellung, vorausgesetzt, dass beide Modalitäten zur Verfügung stehen. Der Radiologe sollte daher mit den häufigsten petrosalen Krankheitsbildern ebenso vertraut sein wie mit den wegweisenden klinischen Befunden. Der nachfolgende Artikel erläutert die wichtigsten Indikationen zur Felsenbeinbildgebung und verknüpft anhand von ausgewählten Fallbeispielen Klinik und Bildgebung.

Abstract

High-resolution cross-section imaging modalities, i. e., CT and MRI, are the methods of choice for detailed assessment of the petrous bone. The decision what modality to choose is based upon the clinical history, the patient’s ENT status and the clinically suspected pathology. The radiologist should be familiar with common diseases of the petrous bone as well as with important clinical findings. The following article focusses on the most common indications for petrous bone imaging and uses selected case studies to correlate clinical and radiological findings.

Key Words

Petrous bone, tumors - Petrous bone, inflammation - Magnetic resonance imaging - Computed tomography

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