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Figure 4 | Cardiovascular Ultrasound

Figure 4

From: Visualization of multimodal polymer-shelled contrast agents using ultrasound contrast sequences: an experimental study in a tissue mimicking flow phantom

Figure 4

Contrast to tissue ratio as a function of mechanical index (MI). Contrast to tissue ratio (dB) (n = 38) as a function of MI for the different contrast agents (CAs) (Plain polyvinyl alcohol (PVA) (A); PVA Type A (B); PVA Type B (C); SonoVue® (D)) and contrast sequences (pulse inversion, f = 5/10 MHz (yellow); pulse inversion, f = 1.5/3.1 MHz (red); power modulation, f = 1.5/3.2 MHz (purple); power pulse inversion, f = 1.3/2.6 MHz (green); contrast pulse sequence, f = 4/8 MHz (blue) included in the study. The concentration of the CAs was 105 microbubbles/ml.

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