Utilization of aorta-specific fat attenuation index in evaluating disease activity and inflammation in Takayasu arteritis

Accurate assessment of disease activity in Takayasu arteritis remains challenging with current clinical and standard imaging criteria. Aorta-specific fat attenuation index is significantly elevated in active Takayasu arteritis and correlates with established markers of inflammation and vascular wall thickening. Combining fat attenuation index with CTA morphology enhances non-invasive diagnosis of active Takayasu arteritis, without extra cost or radiation.