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Quantitative Intra-operative Assessment of Parathyroid Perfusion Using Indocyanine Green (ICG) Fluorescence Imaging
Sponsor: Fujian Medical University
Summary
This single-center, prospective, three-phase observational cohort quantifies the relationship between indocyanine green (ICG) fluorescence and early parathyroid function. Adult patients scheduled for unilateral thyroid lobectomy with autotransplantation of the ipsilateral inferior parathyroid gland are enrolled. After intravenous ICG 25 µg/kg, peak fluorescence of the superior parathyroid gland and the common carotid artery (CCA) is recorded at 60-120 seconds to calculate the ratio R = PTG/CCA. Serum parathyroid hormone (PTH) is measured 30 minutes post-operatively. A derivation cohort (\~120 patients) generates R-based thresholds for in-situ preservation versus autotransplantation, which are prospectively validated in an independent cohort (60 patients) together with decision-curve analysis of clinical net benefit.
Official title: Quantitative Intra-operative Assessment of Parathyroid Perfusion Using Indocyanine Green (ICG) Fluorescence Imaging: A Prospective Observational Study
Key Details
Gender
All
Age Range
Any - Any
Study Type
OBSERVATIONAL
Enrollment
210
Start Date
2025-05-01
Completion Date
2026-05-31
Last Updated
2025-07-15
Healthy Volunteers
No
Conditions
Interventions
ntra-operative Indocyanine Green (ICG) Fluorescence Quantification
After a single intravenous bolus of indocyanine green (25 µg/kg), a near-infrared sensor records raw fluorescence intensity from the superior parathyroid gland and the ipsilateral common carotid artery at 60-120 seconds. No images are stored; only peak intensity values are logged to calculate the perfusion ratio R = PTG / CCA. The measurement is observational, adds ≤2 minutes to operative time, and involves no therapeutic intent.
Locations (2)
Fujian Medical University Union Hospital
Fuzhou, Fujian, China
Fujian Medical University Union Hospital
Fuzhou, Fujian, China