The investigate the right and left diameters of the urethra and lateral diameter on MRI

The aim of this study is to investigate the right and left diameters of the urethra and lateral diameter on MRI; female patients under 50 years old without SUI who visited our hospital from April 2016 to March 2022 were included. The opt-out period was from April to October 2022. Among the patients whose urethra was measured by MRI under the same conditions as in the present study, we calculated the following criteria. Inclusion criteria were (1) previous vaginal delivery, (2) premenopausal, and (3) negative urine cytology and uterine cytology. Exclusion criteria were (a) previous pelvic surgery, (b) uterine disease such as uterine fibroids and endometriosis, and (c) urinary tract infection. A total of 118 Asian women underwent MRI, two women were excluded due to undeniable urinary tract infection, one was excluded due to lack of confirmed urine cytology, and two were excluded without confirmed cervical cytology. Finally, 113 were recruited. This is a 95% confidence interval for the population.