Inverse fly-through technique in ultrasound imaging of carotid stenosis.

A 58-year-old man presented for re-evaluation of an asymptomatic right-sided carotid stenosis. Besides conventional ultrasound techniques, we could confirm a moderate right internal carotid artery stenosis by the innovative inverse fly-through technique (figure). Regular checkups were initiated. There is growing evidence that 3D ultrasound may provide new possibilities for evaluating carotid disease. With our technique, it is possible to view a carotid stenosis from all imaginable directions (video on theNeurology® Web site at www.neurology.org) and to provide patients with an easy-to-grasp presentation of their carotid stenosis. However, the reliability, validity, and clinical usefulness of the technique will require further study.