Faculty, Staff and Student Publications

Publication Date

8-1-2025

Journal

European Journal of Nuclear Medicine and Molecular Imaging

DOI

10.1007/s00259-025-07229-8

PMID

40148510

PMCID

PMC12316795

PubMedCentral® Posted Date

3-28-2025

PubMedCentral® Full Text Version

Post-print

Abstract

Purpose: The TheraSphere Global Steering Committee reconvened to review clinical data and address knowledge gaps related to treatment and dosimetry in non-HCC indications using Yttrium-90 (90Y) glass microspheres.

Methods: A PubMed search was performed. References were reviewed and adjudicated by the Delphi method. Recommendations were graded according to the degree of recommendation and strength of consensus. Dosimetry focused on a mean dose approach, i.e., aiming for an average dose over either single or multicompartment volumes of interests. Committee discussion and consensus focused on optimal patient selection, disease presentation, liver function, tumour type, tumour vascularity, and curative/palliative treatment intent for intrahepatic cholangiocarcinoma (iCCA) and colorectal and neuroendocrine carcinoma liver metastases (mCRC, mNET).

Results: For all indications, single compartment average perfused volume absorbed dose ≥ 400 Gy is recommended for radiation segmentectomy and 150 Gy for radiation lobectomy. Single compartment 120 Gy for uni- and bilobar treatment reflects current clinical practice, which results in variable tumour and normal tissue absorbed doses. Therefore, multicompartment dosimetry is recommended for uni- and bilobar treatment, aiming for maximum 75 Gy to normal tissue and 150-200 Gy (mCRC, mNET), ≥ 205 (iCCA) tumour absorbed doses. These dose thresholds are preliminary and should be used with caution accounting for patient specific characteristics.

Conclusion: Consensus recommendations are provided to guide clinical and dosimetry approaches for 90Y glass microsphere radioembolization in iCCA, mCRC and mNET.

Keywords

Humans, Yttrium Radioisotopes, Microspheres, Glass, Cholangiocarcinoma, Carcinoma, Neuroendocrine, Colorectal Neoplasms, Embolization, Therapeutic, Radiometry, Bile Duct Neoplasms, Radiotherapy Dosage, Liver Neoplasms, Radioembolization, Yttrium-90, Dosimetry, Intrahepatic cholangiocarcinoma, Metastatic colorectal cancer, Neuroendocrine

Published Open-Access

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