Automated Estimation of Acute Infarct Volume from Noncontrast Head CT Using Image Intensity Inhomogeneity Correction

Table 1

Ratios of synthetic infarct volume and the corresponding measured volume as a function of changes in volume (three volumes at left) and different radiodensities (four densities across the top of the columns) for the two different IIC algorithms (FSL and ITK). The numbers correspond to Figure 3.

	30%		20%		10%		5%
	FSL	ITK	FSL	ITK	FSL	ITK	FSL	ITK
122cc	92.2%	69.4%	81.2%	53.1%	53%	31.9%	34.9%	19.6%
45cc	128.1%	114.3%	117.6%	92.0%	86.5%	59.0%	64.0%	39.0%
17cc	210%	176.7%	201.8%	148.5%	160.4%	102.3%	131.6%	66.4%