Table 1.

Stone Dimensions and Weights Before Implantation and After Treatment

Stone	Initial mass (mg)	Size (mm)	Remaining mass >2 mm (mg)	Remaining mass >4 mm (mg)	% Fragmented <2 mm	% Fragmented <4 mm
1a	74	6 × 3 × 3	0	0	100	100
2	82	7 × 5 × 4	0	0	100	100
3	124	7 × 7 × 5	52	52	58	58
4	60	6 × 3 × 3	0	0	100	100
5a	162	7 × 5 × 5	38	0	77	100
Average	100 ± 37		18 ± 22	10 ± 21	87 ± 17	92 ± 17

^aCavitation in tissue occurred during treatment.