Example white-light images of phantom cross sections ((a), (c), (e), (g), (i), (k)) as well as fluorescence reconstructions of circulating microspheres ((b), (d), (f), (h), (j), (l)) when a flow phantom with a single embedded Tygon tube was oriented at 0° (bottom), 90°, 180°, 270°, 135° and inset 315°, respectively (see the text for details). The centroid of each reconstruction is marked with a green circle. An example reconstructed data set when the flow phantom was oriented at 270° is shown in supplemental video 1 available at stacks.iop.org/PMB/57/4627/mmedia.