Indian Journal of Nuclear Medicine
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Year : 2018  |  Volume : 33  |  Issue : 4  |  Page : 302-305

Rhenium-188 hydroxyethane 1,1-diphosphonic acid (HEDP) for bone pain palliation using BARC-HEDP kits versus Pars-HEDP kits: A comparison on preparation and performance aspects at hospital radiopharmacy

1 Kovai Medical Centre and Hospital, Coimbatore, Tamil Nadu, India
2 Radiopharmaceuticals Division, Bhabha Atomic Research Centre, Mumbai, Maharastra, India
3 Radiopharmaceuticals Division, Bhabha Atomic Research Centre; Homi Bhabha National Institute, Mumbai, Maharastra, India

Correspondence Address:
Madhava Balakrishna Mallia
Radiopharmaceuticals Division, Bhabha Atomic Research Centre, Mumbai - 400 085, Maharastra; Assistant Professor, Homi Bhabha National University, Mumbai - 400 094, Maharastra
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/ijnm.IJNM_39_18

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Purpose of the Study: Rhenium-188 hydroxyethane 1,1-diphosphonic acid (HEDP) is a clinically established radiopharmaceutical for palliation of bone pain due to osseous metastases. Recently, the Bhabha Atomic Research Centre (BARC) had developed a freeze-dried kit for the preparation of rhenium-188 HEDP. The present study compares the radiochemistry aspects of indigenous BARC-HEDP kits with commercially available HEDP kits from Pars Isotope Company, Iran. Materials and Methods: Freeze-dried HEDP kits were obtained from Radiopharmaceuticals Division, BARC, and Pars Isotope Company, Iran. Following recommended procedures, rhenium-188 HEDP was prepared using freeze-dried kits from both sources using freshly eluted rhenium-188 sodium perrhenate obtained from a commercial tungsten-188/rhenium-188 generator. Results: Both kits could be used for the preparation of rhenium-188 HEDP in >95% radiochemical purity (RCP). Rhenium-188 HEDP prepared from both kits showed comparable in vitro stability as well as pharmacokinetic properties. The normal bone-to-soft tissue ratio observed for rhenium-188 HEDP prepared using BARC-HEDP kit and Pars-HEDP kit was 1.993 and 1.416, respectively. Conclusions: Both HEDP kits provided a user-friendly solution for the preparation of rhenium-188 HEDP. While Pars-HEDP-kit permits the addition of only 2 mL of rhenium-188 perrhenate solution per kit vial, BARC-HEDP-kit allows up to 5 mL. This feature permits the preparation of patient dose of rhenium-188 HEDP even with older generators providing rhenium-188 perrhenate having a low radioactive concentration (activity/mL). In addition, availability of an indigenous product is always preferable over imported options.

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