Variable

Value

Diagnosized by

Ultrasonography or abdominal radiographs

11

Cystoscopy

8

The diameter of bladder stone (mm)

<5

15

5 - 10

3

11 - 15

1

The volume of bladder stone (cm³)

<0.2

17

0.2 - 0.5

1

0.5 - 1.0

1

>1.0

0

The remove of bladder stone

Bladder irrigation guided by ultrasound

5

Endoscopic lithotrypsy

14