Artificial Neural Network-Based System for PET Volume Segmentation

Table 3

Comparison of sphere volumes and ARE between TV and CV for different segmentation algorithms assessed including thresholding, clustering and ANN.

Spheres		Thresholding		Clustering		ANN
No.	TV (ml)	CV (ml)	ARE %	CV (ml)	ARE %	CV (ml)	ARE %
1	26.52	26.74	0.81	25.73	2.97	26.54	0.08
2	11.49	11.62	1.07	11.01	4.22	11.51	0.10
3	5.58	5.96	6.97	5.28	5.35	5.63	0.95
4	2.57	2.81	9.08	2.40	6.89	2.63	2.13
5	1.15	1.29	11.98	1.03	10.03	1.10	4.54
6	0.52	0.61	15.76	0.46	11.52	0.49	5.88