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  • Title: Intra-arterial radionuclide therapy for liver tumours: effect of selectivity of catheterization and 131I-Lipiodol delivery on tumour uptake and response.
    Author: Brans B, Bacher K, Vandevyver V, Vanlangenhove P, Smeets P, Thierens H, Dierckx RA, Defreyne L.
    Journal: Nucl Med Commun; 2003 Apr; 24(4):391-6. PubMed ID: 12673167.
    Abstract:
    Several authors have demonstrated the good tolerance of hepatic intra-arterial 131I-Lipiodol therapy and report survival rates of 21-25% after 1 year in inoperable patients. This study explored the possibility that more selective hepatic arterial instillation could be a strategy for increasing tumoural uptake and response of 131I-Lipiodol. Between June 1999 and September 2001 we selected 24 patients: 14 received a selective instillation of 131I-Lipiodol to the proper hepatic artery (SEL group); and 10 received a hyperselective instillation in the right or left hepatic artery (HYP-SEL group). The individual 131I-Lipiodol activity as a per cent of the injected activity per millilitre of tumour (%IA/ml tumour) was correlated with the selectivity of instillation in 28 tumours and with tumour response in 24 tumours. Differences in tumour response or tumour uptake between the SEL and HYP-SEL groups were not significant. In general, we observed a %IA/ml tumour of 0.05-2.6% for the uptake of 131I-Lipiodol. The uptake was significantly higher in responsive disease than in stable or progressive disease (P=0.002). A large tumour volume was invariably related to low uptake of 131I-Lipiodol and progressive disease (P=0.008). In conclusion, our study does not support the general use of hyper-selective or super-selective intra-arterial administration of 131I-Lipiodol. This result may be extrapolated to similar types of intra-arterial, loco-regional hepatic radionuclide therapy.
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