Digital subtraction angiography in Takayasu arteritis.

Area of Science:

• Cardiovascular Imaging
• Rheumatology
• Vascular Medicine

Background:

• Takayasu arteritis is a large vessel vasculitis affecting the aorta and its branches.
• Accurate imaging is crucial for diagnosis, monitoring disease activity, and guiding treatment.
• Digital subtraction angiography (DSA) offers high-resolution vascular visualization.

Purpose of the Study:

• To evaluate the utility and limitations of digital subtraction angiography (DSA) in diagnosing and monitoring Takayasu arteritis.
• To compare the effectiveness of intravenous DSA versus intraarterial DSA in assessing vascular involvement.

Main Methods:

• Retrospective analysis of 32 patients diagnosed with Takayasu arteritis.
• Intravenous and intraarterial digital subtraction angiography (DSA) were performed.
• Findings were correlated with clinical data and conventional angiography where applicable.

Main Results:

• Intravenous DSA proved valuable for monitoring patients with established Takayasu arteritis.
• Pulmonary arterial involvement, including obstructive changes, was visualized with intravenous DSA.
• Intraarterial DSA provided detailed information on the extent of vascular lesions and collateral vessel formation.
• Neither intravenous nor intraarterial DSA could detect thickening of the thoracic aortic wall.

Conclusions:

• DSA is a useful tool for evaluating vascular complications in Takayasu arteritis, particularly for follow-up and pulmonary artery assessment.
• Conventional angiography remains necessary for initial assessment, especially when aortic arch involvement is suspected or for evaluating aortic wall thickening.
• DSA shows significant potential to become a primary diagnostic modality for Takayasu arteritis.