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Microfluidics and Nanofluidics

, 23:109 | Cite as

Does PDMS really interact with [18F]fluoride? Applications in microfluidic reactors for 18F-radiopharmaceuticals

  • Laura Fernandez-MazaEmail author
  • Blas Salvador
  • Diana Orta
  • Ariadna Corral
  • Antonio Luque
Research Paper
  • 78 Downloads

Abstract

Microfluidic devices used to synthesize radiopharmaceuticals for positron emission tomography (PET) are of increasing interest for the rapid preparation of on-demand doses, especially in medical centers that do not have a cyclotron. Polydimethylsiloxane (PDMS) is an inexpensive, easily available material used for the manufacturing of microfluidic devices. The literature often refers the interaction of this material with [18F]fluoride. Many authors discard PDMS as a suitable material because of these interactions, while others suggest the use of a thin fluoropolymer coating to reduce the adsorption of [18F]fluoride. The objective of this work was to evaluate the retention of [18F]fluoride within a PDMS reaction chamber without further treatment, under heating and vacuum in a range of activities that would allow to obtain enough product for two or three human doses of a radiopharmaceutical. Under these conditions, which are commonly used in radiosynthesis with [18F]fluoride, we found that [18F]fluoride was almost non-adsorbed into PDMS, making PDMS suitable for 18-F radiochemistry on single-use lab-on-chip devices, even uncoated.

Keywords

Radiopharmaceuticals Lab on chip PDMS Microfluidics Fluorine-18 

Notes

Acknowledgments

The authors would like to acknowledge the support of Andalusian Government, project TIC 2296 “Microlab-en-chip para produccion de radiofarmacos para diagnostico PET”. Proyectos de Excelencia Junta de Andalucia, 2014, and the support of Siemens Healthineers and Curium Pharma.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflicts of interest.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Centro Nacional de AceleradoresUniversidad de Sevilla, CSIC and Junta de AndaluciaSevilleSpain
  2. 2.Departamento de Ingenieria Electronica, Escuela Tecnica Superior de IngenieriaUniversidad de SevillaSevilleSpain

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