A Novel Protocol for Pre-Treatment Diagnostic 131 I Scan Within 24 Hours Post-Second rhTSH Administration to Guide Radioiodine Therapy in Differentiated Thyroid Cancer.
Rongfang Shen, Huiting Yang, Xiaoting Ye et al.
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In 30 seconds
This single-center, prospective clinical trial evaluated the feasibility of performing a diagnostic 131 I whole-body scan (Dx-WBS) within 24 hours after the second rhTSH injection in patients with differentiated thyroid carcinoma. The study found that concordance rates of Dx-WBS with post-treatment scans were 92.7% at 24 hours, indicating that this approach allows timely pre-RAIT evaluation without altering the established treatment schedule.
Key findings
- Concordance rates for 12h-, 18h-, and 24h-Dx-WBS with Rx-WBS were 82.7%, 91.8%, and 92.7%, respectively.
- Concordance of 24-hour sTg with 72-hour sTg was 89.3%, significantly higher than 6-hour sTg at 72.0% (p < 0.05).
- Concordance at both 18 and 24 hours was significantly higher than at 12 hours (p < 0.05).
Why it matters
This study suggests that performing Dx-WBS within 24 hours of rhTSH administration can enhance the efficiency of pre-RAIT evaluations in differentiated thyroid cancer, potentially improving patient management and treatment timelines.