Attenuation Correction for Small Animal PET Images: A Comparison of Two Methods

Table 4

ROI counts measured on the myocardium and in the left ventricle obtained using ¹⁸F-FDG rat images. The RV calculated with (4) is shown for both CT-AC and SE-AC images.

	Roi counts (cps)	RV (%)
Original PET image
Myocardium	3 463.70	—
Ventricle	1 975.00	—
CT-AC image
Myocardium	4 478.60	22.7%
Ventricle	2 577.30	23.4%
SE-AC image
Myocardium	4 393.40	20.8%
Ventricle	2 511.30	20.8%