MRI cell phantom.

The diagram (A) and MR localizer images (B, C) indicate the sample layout within a plastic 9-cm spherical mold, filled with 4% gelatin/PBS. Four different samples, prepared from parental and MagA-expressing cells cultured in the presence (+Fe) and absence of iron supplementation, were inlaid in one hemisphere and arranged from left to right as follows: P19 (1), P19 + Fe (2), MagA (3), MagA + Fe (4). A plastic marker (black) indicates orientation of the samples. Images were acquired by 3T MRI [6]. In the sagittal view of the phantom (B), a yellow box indicates the 1.5 mm slice selected for image acquisition. A cross sectional view of the phantom (C) shows the alignment of sample wells.