Abstract: Graduated catheters including, but not limited to, graduated urethral and ureteric catheters are provided, the catheters each comprising a catheter tube, an expandable portion, and at least one indicator. The position of at least one indicator may be determined by an extracorporeal imaging method. A kit comprising a matched pair of graduated catheters is also provided, wherein the position within a bodily lumen of a subject of at least one indicator of a graduated locator catheter of the kit has a known relationship to the position within the bodily lumen of at least one indicator of a graduated delivery catheter of the kit. Brachytherapy methods are also provided, including methods of treating urethral and ureteric strictures, prostate cancer, and benign prostatic hypertrophy.