Figure 2 | NPG Asia Materials

Figure 2

From: An advanced in situ imaging method using heavy metal-doped hollow tubes to evaluate the biokinetics of carbon nanotubes in vivo

Figure 2

Relationship of contrast to magnification in magnetic resonance imaging (MRI) used to find limits of gadolinium (Gd) contrast media and Gd-peapods detection. (a) Detection limit of Gd contrast medium. The contrast ratio of Gd contrast medium remained constant after diluting ⩾7000 times (Gd concentration: 130 ng ml−1). (b) Detection limit of Gd-peapods. The contrast ratio of Gd-peapods and Gd in saline after diluting ⩾50 times (Gd-peapods concentration: 1.3 μg ml−1, Gd concentration: 40 ng ml−1).

Back to article page