Fig. 4.
X-ray opacity of various aqueous polymer solutions in vitro. (A) The linear relationship between the average grayscale indices/Hounsfield units of iohexol aqueous solutions and their iodine amounts (n = 3, Pmax = 0.1). (B) The optical photographs, the corresponding Micro-CT images on the x-axis and the radiopacities of the indicated samples using the grayscale unit. The results are expressed as mean ± standard deviation (SD) (n = 3, Pmax = 0.1). (C) Design, modeling and 3D printing of “FDU” pattern. (D) The X-ray opacity of “FDU” pattern containing P1 or PI1 solution using Micro-CT. (E) The X-ray opacity of “FDU” pattern containing P1 or PI1 solution covered with different layers of pork using X-treme.