An investigation of the efficacy and mechanism of contrast-enhanced X-ray Computed Tomography utilizing iodine for large specimens through experimental and simulation approaches

Table 2 Correlation of grayscales, CT values (Hounsfield Units), and iodine concentration in scans of the staining solution. The Hounsfield Units of I₂KI solution (in italics) was calculated through a lineal regression between the Grayscales values and Hounsfield Unit of aqueous formalin solution and air (see Fig. 10a)

Materials	Grayscale values	Hounsfield unit	Iodine concentration
Materials	Grayscale values	Hounsfield unit	mmol/L	w/v
Aqueous buffered formalin solution	18202	0	0	0
I₂KI-buffered formalin solution	21206	394	66	1 %
I₂KI-buffered formalin solution	24552	949	199	3 %
I₂KI-buffered formalin solution	28058	1531	398	6 %
I₂KI-buffered formalin solution	31978	2181	583	8.8 %
Air	12800	−1000	N/A	N/A

ISSN: 1472-6793