Study Of The Patient Radiation Dose During Five Endourological Procedures

Overview

About this study

In the medical world more and more procedures are performed with the use of ionizing radiation (x-ray), both diagnostic and therapeutic. The main and most known risk is the development of malignancies as a result of the use of ionizing radiation.

Purpose of this study: To examine the patient radiation dose (PRD) if the frames per second (FPS) are set differently during the five most performed endourological procedures where fluoroscopy is used (insertion/replacement of ureteral stent, (mini-)percutaneous nephrolithotomy (PCNL/PNL), ureterorenoscopy (URS) and extracorporeal shock wave lithotripsy (ESWL/SWL)) and to propose an acceptable PRD for these procedures in a multicentric study.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

* all patients who receive insertion/replacement of ureteral stent, URS (flexible or semirigid), (mini-)PCNL (including ECIRS) or ESWL under fluoroscopic with or without ultrasonic guidance
* Only cases performed or directly supervised by experts

Exclusion Criteria:

* Bilateral cases
* Diagnostic ureterorenoscopies
* Antegrade ureteroscopies
* Procedures for Upper Tract Urothelial Carcinoma (UTUC)
* Procedures on children (aged <18 years)
* Pregnant women
* Abnormal urinary anatomy (e.g. ureteral duplication, pelvic kidney, bladder derivation, horseshoe kidney)

Note: Other protocol defined Inclusion/Exclusion Criteria may apply.

Eligibility last updated 06/30/2025. Questions regarding updates should be directed to the study team contact.

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location	Status	Contact
Scottsdale/Phoenix, Ariz. Mayo Clinic principal investigator Karen Stern, M.D.	Open for enrollment	Contact information: Christopher Ballantyne M.D. (480) 342-3868 Ballantyne.Christopher@mayo.edu

Mayo Clinic Location

Status

Contact

Scottsdale/Phoenix, Ariz.

Mayo Clinic principal investigator

Karen Stern, M.D.

Open for enrollment

Contact information:

Christopher Ballantyne M.D.

(480) 342-3868

Ballantyne.Christopher@mayo.edu

More information

Publications

Publications are currently not available

Clinical Trials