Proper selection of ureteral stent length might help in reducing comorbidities associated with ureteral stenting, currently there is no standardized way of measuring ureteral length.

Measurement of ureteral length according to Computed Tomography (CT) scan might provide useful information when selecting the length of a ureteral stent. Our aim in this study is to compare ureteral measurements using CT scan and measurement of actual ureteral length measured during ureteral stenting.

Inclusion Criteria:

• Patients undergoing planned procedure involving ureteroscopy or ureteral stenting
• Abdominal CT scan performed within 6 months prior to intervention

Exclusion Criteria:

• Known iodine sensitivity
• Patients with fever or hemodynamic instability planned for urgent operation
• Severe immune compromized patients
• Severe thrombocytopenia < 50,000