Response to: ‘Correspondence to ‘Slope sign’: a feature of large vessel vasculitis?’ by Milchert et al

We are grateful for the interest in our article and agree with Milchert et al 1 that the slope sign deserves a precise definition. Intimal medial thickness (IMT) of the axillary artery is the current way of assessing large vessel giant cell arteritis (LV-GCA) by ultrasound (US), with a cut-off value of greater than 1.0 mm suggesting LV-GCA.2 Other causes of arterial wall thickening can mimic vasculitis such as atherosclerosis and it...