[Imaging representation of the aorta].

Depending on the type and acuteness, diseases of the aorta can be imaged by a variety of techniques. Modalities and quality of imaging have developed rapidly in recent years. In combination with the clinical assessment of patients, the results obtained by imaging determine the further management. They not only establish the underlying diagnosis but provide the information essential for indications, planning and reassessment of therapy, as well as for evaluation of the clinical course and surveillance. Whereas conventional catheter-guided angiography and intravascular ultrasound are only used in exceptional cases and then in conjunction with interventional therapy, cross-sectional imaging modalities, such as contrast-enhanced computed tomography (CT) angiography and magnetic resonance imaging (MRI) are nowadays the mainstay of diagnostics. Ultrasound techniques are improving steadily and are gaining increasing importance, e. g. for screening purposes and for pretherapeutic and posttherapeutic surveillance. Additional information of therapeutic relevance may be acquired by means of molecular imaging with positron emission tomography (PET) CT.