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Imaging infection/inflammation in the new millennium
H J Rennen1, O C Boerman, W J Oyen
1Department of Nuclear Medicine, University of Medical Center, Nijmegen, The Netherlands. H.Rennen@nugen.azn.nl
European Journal of Nuclear Medicine
|April 17, 2001
Summary
Nuclear medicine advances visualize infection and inflammation. New radiopharmaceuticals and positron emission tomography offer sophisticated imaging, moving beyond traditional labeled leukocytes.
Area of Science:
- Nuclear Medicine
- Radiochemistry
- Medical Imaging
Background:
- Gamma scintigraphy techniques for infection and inflammation imaging were developed in the late 20th century.
- Autologous leukocytes labeled with indium-111 or technetium-99m remain the gold standard for infection and inflammation imaging.
- The field is rapidly expanding with new radiopharmaceuticals for infectious and inflammatory disorders.
Purpose of the Study:
- To survey current and emerging approaches for visualizing infection and inflammation.
- To highlight advancements in radiopharmaceuticals and imaging techniques.
- To discuss the shift towards more sophisticated imaging methods.
Main Methods:
- Review of existing nuclear medicine techniques, including gamma scintigraphy with radiolabeled leukocytes (indium-111, technetium-99m).
- Exploration of developing radiopharmaceuticals based on protein/peptide chemistry.
- Inclusion of positron emission tomography (PET) with fluorine-18 fluorodeoxyglucose (FDG).
Main Results:
- Autologous radiolabeled leukocytes are the established "gold standard" but have limitations.
- Advancements in radiochemistry are enabling agents with higher specific activities.
- Fluorine-18 fluorodeoxyglucose PET shows high sensitivity in delineating infectious and inflammatory foci.
Conclusions:
- The future of infection and inflammation imaging involves a move from basic/cumbersome techniques to sophisticated methods.
- Emerging radiopharmaceuticals and PET imaging represent significant progress.
- Continued development in radiochemistry and molecular imaging is expected to enhance diagnostic capabilities.