Effect Evaluation of mobile combined lead shields on Reducing Gonadal Radiation Dose to Operators During TIPS Procedures：A Randomized Controlled Trial

Corresponding author: Ye Wei, yewei0720@163.com

DOI: 10.12201/bmr.202509.00036

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  Abstract: Abstract Objective To evaluate the protective effect of a mobile combined lead shield on gonadal radiation dose for operators during Transjugular Intrahepatic Portosystemic Shunt (TIPS) placement.Methods A total of 40 TIPS procedures were included in this randomized controlled trial. Participants were allocated via a random number table into an experimental group (n = 20), in which a mobile combined lead shield was deployed for gonadal protection during the procedure, or a control group (n = 20) that received no additional shielding. A direct-reading electronic dosimeter was used to measure and record real-time radiation exposure at the gonadal region for both the primary and secondary operators. The gonadal radiation doses were then compared between the two groups.Results The technical success rate was 100% in both groups. Compared to the control group, the median gonadal radiation dose in the experimental group significantly decreased from 113.15 （58.86, 162.75）μSv to 29.19（18.40, 60.05）μSv for the primary operator and from 99.82（48.31, 132.84）μSv to 33.33（19.99, 47.53）μSv for the secondary operator. Similarly, the median dose rate decreased from 247.41（175.43, 286.97）μSv/h to 76.36（62.77, 118.35）μSv/h for the primary operator and from 199.72（145.74, 268.35）μSv/h to 80.95 （64.25, 92.37）μSv/h for the secondary operator. All these differences were statistically significant (P<0.001 for all comparisons).Conclusion During TIPS procedures, the use of a mobile modular lead shield effectively reduces the gonadal radiation dose to operators. It significantly improves radiation protection for operators in this specific procedure, providing a practical and compliant supplementary solution for gonadal shielding in TIPS operators.

  Key words: Mobile combined lead shield; Transjugular Intrahepatic Portosystemic Shunt; Gonads; Radiation protection; Radiation dose

  Submit time: 15 September 2025

  Copyright: The copyright holder for this preprint is the author/funder, who has granted biomedRxiv a license to display the preprint in perpetuity.
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