Yttrium-90 Radioembolization in the VX2 Rabbit Model: Radiation Safety and Factors Influencing Delivery Efficiency

Andrew C. Gordon*, Vanessa L. Gates, Sarah B. White, Kathleen R. Harris, Samdeep K. Mouli, Dong Hyun Kim, Reed A. Omary, Riad Salem, Robert J. Lewandowski, Andrew C. Larson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The purpose of this study was to define the optimal infusion parameters and operator radiation exposure for yttrium-90 (90Y) radioembolization in the VX2 rabbit model of liver cancer. Forty-one rabbits with VX2 were treated with glass microspheres with vial sizes of 1, 3, and 5 GBq. The mean administered activity was 51.5 MBq (95% CI, 39.1–63.9). Delivery efficiency improved with 1 GBq versus with 3 GBq (residual 11.0% vs 46.4%, respectively; P = .0013) and improved with 1 GBq versus with 5 GBq (residual 11.0% vs 33.8%, respectively; P = .0060). The mean operator extremity exposure was 41.7 μSv/infusion. The optimal minimum infusion volume and rate was 49 mL and 21 mL/min, respectively. Fecal elimination occurred with microsphere uptake in the gallbladder at 1 and 2 weeks. 90Y radioembolization can be safely and efficiently performed in the VX2 rabbit model. Methodological considerations as a “how-to” for the setup of a preclinical 90Y laboratory are included to support future translational research.

Original languageEnglish (US)
Pages (from-to)1569-1574.e11
JournalJournal of Vascular and Interventional Radiology
Volume32
Issue number11
DOIs
StatePublished - Nov 2021

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Cardiology and Cardiovascular Medicine

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