Placement of the quality control phantoms into the imaging systems and example images.

<p>Phantoms were positioned in VisualSonics Vevo LAZR (A) and Endra Nexus 128 (B) using water for ultrasound coupling. A simple acrylic box was used to position the phantom from <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0075533#pone-0075533-g001" target="_blank">Figure 1B</a> in the VisualSonics system, while the hemispherical mold that was used to make <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0075533#pone-0075533-g001" target="_blank">Figure 1A</a> was placed directly into the Endra system. (C) Example of a cross section of the quality control phantom on the VisualSonics system. (D) Example of a tomographic reconstruction of the same phantom from the Endra system.