How to judge whether the urine is good

If the patient wants to do B-ultrasound examination of urinary system, it is necessary to hold urine at this time. Because the urinary system can only reach the state of fullness in the state of holding urine, it can effectively help the exposure of the lesion site, and it can effectively help B-ultrasound examination to discover the patient's lesion site and the lesion situation. How to judge that the urine has been held back, it is suggested that the patient through their own feelings, if the bladder shows a slight swelling, and has the intention to urinate, then it is explained that the urine has been held back, it is recommended to conduct a timely B-ultrasound examination, then the examination is more accurate.