Abstract
The role of ultrasonography in the diagnosis of female lower urinary tract symptoms (FLUTS) includes exclusion of diseases unrelated to FLUTS, detection of morphological abnormalities associated with FLUTS, and measurement of residual urine volume. Though it is hard to say that transperineal and transvaginal ultrasonography are frequently used in daily clinical practice, they are useful for observing the morphology of the lower urinary tract, particularly that of the bladder neck, urethra, and pelvic floor, which are hard to observe with transabdominal ultrasonography.