What characterizes a differential cutting atherectomy?

A differential cutting atherectomy is characterized by its ability to differentiate between the types of tissue within the vascular structure. The technique specifically aims to spare soft vascular tissue while effectively removing hard plaque, which is essential for minimizing damage to healthy blood vessel walls during the procedure. This selective approach allows for more precise treatment of atherosclerotic lesions by reducing the risk of complications related to the removal of non-targeted tissue.

This differentiation in tissue cutting is crucial for promoting better recovery and maintaining patency in treated vessels, as the preservation of soft tissue can aid in healing. The device used in this atherectomy functions by employing a specialized mechanism that differentiates between hard and soft tissues, enhancing the safety and efficacy of the procedure.

The other options present methods or techniques that do not accurately reflect the specialized nature of differential cutting atherectomy. For instance, using low-energy ultrasound or circular movement without rotation does not align with the established characteristics of this type of atherectomy, as they don't incorporate the specific tissue differentiation that is a hallmark of the technique. Additionally, while employing a rotating cutter is a common feature in various atherectomy devices, it does not define the unique attribute of sparing soft tissue while removing hard plaque.