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A graphic describing the principle of transrectal-SDUV for the measurement of prostate viscoelastic parameters. A harmonic shear wave is produced by a “Push” ultrasound beam, and its propagation is monitored by a separate “Detect” ultrasound beam at two positions using the same probe. The shear wave speed is calculated from its phase φ1 and φ2 measured at 2 locations (separated by a distance Δr) along its traveling path.
