A Simple Scatter Reduction Method in Cone-Beam Computed Tomography for Dental and Maxillofacial Applications Based on Monte Carlo Simulation

Table 2

Comparison of contrast in the selected regions before and after scatter reduction on the reconstructed images of real patients.

Patient case	Reconstructed images	Contrast (grayscale value)
		Air bone	Bone tissue
Case 1	Before scatter reduction	384.35	261.97
	After scatter reduction	473.62	333.42
	Absolute percentage change	23.22%	27.27%
Case 2	Before scatter reduction	405.72	262.71
	After scatter reduction	471.49	309.16
	Absolute percentage change	16.21%	17.68%
Case 3	Before scatter reduction	378.94	223.56
	After scatter reduction	465.01	280.51
	Absolute percentage change	22.71%	25.47%
Case 4	Before scatter reduction	393.35	238.34
	After scatter reduction	458.49	287.16
	Absolute percentage change	16.56%	20.48%