Research Article
SQUID-Based Magnetic Resonance Imaging at Ultra-Low Field Using the Backprojection Method
Figure 11
Images of the phantom with seven rods with a diameter of 5 mm. (a) Photograph of a 35 mm diameter cylindrical plastic phantom. (b–d) 2-D image of the phantom reconstructed by the backprojection method at the acquisition time of 51.2 ms, 102.4 ms, and 204.8 ms, respectively. The images (b)–(d) were acquired with a prepolarization field (Bp) of 500 mT, Bm = 128 μT, and the gradient was ∼180 μT/m.
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