Fig. 3.
Dual-mode background suppression. (A and B) Schematic of imaging phantoms. Diamonds are arranged in a ring-shaped phantom, cosituated with Alexa 647 dye and [13C]-methanol that present an artificial background for optical and MR imaging, respectively. (C and D) Optical and MR images with the background. Dashed lines serve as a guide to the eye for the imaging phantom. Diamond particles are indistinguishable from the background in both imaging dimensions. (E and F) Background suppressed optical and MR images employing signal modulation (reversal) allow complete recovery of the original diamond phantom in both imaging modes.