Figure 2From: Evaluation of ultrasound Tissue Velocity Imaging: a phantom study of velocity estimation in skeletal muscle low-level contractions Phantom repeatability. Figure 2 shows two of the sine wave motions and the repeatability of the phantom, a) sine wave with 1 mm amplitude and b) sine wave with 8 mm amplitude. The 30 repetitions of each sine wave are displayed in the figure (10 repetition × 3 different PRF settings).Back to article page