Comb-push Ultrasound Shear Elastography (CUSE) with Focused Ultrasound Push Beams

Technology #2012-134

Shear wave produced by a focused ultrasound beam is used to evaluate tissue visco-elasticity, which are sensitive biomarkers of pathology. Shear waves thus produced are weak and attenuate quickly when propagating away from the push origin. We have proposed a method called CUSE where multiple unfocused push beams spaced out like a comb are used for shear wave production. Every pixel under the entire transducer aperture has a push beam nearby to provide a strong signal for measurements in CUSE. Here we disclose another CUSE method using multiple focused (instead of unfocused) beams. Focused CUSE can be used to image tissues at deeper depth that unfocused CUSE.