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THE QUARTERLY JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING
Rivista di Medicina Nucleare e Imaging Molecolare
A Journal on Nuclear Medicine and Molecular Imaging
Affiliated to the and to the International Research Group of Immunoscintigraphy
Indexed/Abstracted in: Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index (SciSearch), Scopus
Impact Factor 2,413
The Quarterly Journal of Nuclear Medicine and Molecular imaging 2011 February;55(1):91-102
Introduction of a new semi-quantitative index with predictive implications in patients with painful osseous metastases after 186Re-HEDP therapy
Zafeirakis A. 1, Zissimopoulos A. 2, Baziotis N. 3, Limouris G. S. 4 ✉
1 Department of Nuclear Medicine, Army Hospital of Athens, Athens, Greece;
2 Department of Nuclear Medicine, Demokriteion University of Thrace, Alexandroupolis, Greece;
3 Department of Nuclear Medicine, St. Savvas Anticancer Hospital of Athens, Athens, Greece;
4 Department of Nuclear Medicine, Aretaieion University Hospital, Athens, Greece
AIM: In this study, a new method has been used to predict pain response to 186Re-HEDP therapy in patients suffering from painful osseous metastases, on the basis of a modified bone scan index and pre-therapy pain scoring.
METHODS: Forty five patients received a total of 73 doses of 186Re-HEDP during a period of pain relapse without extra-osseous disease progression. All patients were under stable regimen of zoledronic acid, far off other therapeutic manipulations. Imaging studies regarding a modified estimation of bone scan index, were applied; the value of the largest bony lesion (called mBSI), provided that it also corresponded to the most prominent site of osseous pain was taken into account, and a new semi-quantitative index called Double Product Value (DPV), equal to pre-therapy pain score times mBSI was entered in the result analyses, to investigate any possible correlations with response endpoints.
RESULTS: Favourable response occurred in 35/47 evaluated therapeutic doses of 186Re-HEDP (74.5%; excellent response in 12 doses, 25.5%). Responders had significantly lower DPV (3.4±2.3 vs. 10.2±6.2, P=0.0029, for non-responders). Patients with pre-therapy DPV
CONCLUSION: DPV, as developed and implemented in this study proved a valuable and reproducible pre-therapy tool for assessing degree and duration of pain response after 186Re-HEDP therapy.