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