期刊
MOLECULAR IMAGING
卷 19, 期 -, 页码 -出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/1536012120966405
关键词
PET imaging; FDG; autoradiography
资金
- Natural Sciences and Engineering Research Council Collaborative Research and Training Experience Sustainable Applied Fertilizer and Environmental Remediation (NSERC CREATE SAFER) program
- Natural Sciences and Engineering Research Council Collaborative Research and Development - Federated Cooperatives Limited [537285-18]
- Sylvia Fedoruk Canadian Centre for Nuclear Innovation [J2018-0041]
- Agriculture and Food Research Initiative from the USDA National Institute of Food and Agriculture [2017-67013-26216]
- Bayer Crop Science, Grants4Biologicals Program [2019-01-035]
Positron-emitting nuclides have long been used as imaging agents in medical science to spatially trace processes non-invasively, allowing for real-time molecular imaging using low tracer concentrations. This ability to non-destructively visualize processes in real time also makes positron imaging uniquely suitable for probing various processes in plants and porous environmental media, such as soils and sediments. Here, we provide an overview of historical and current applications of positron imaging in environmental research. We highlight plant physiological research, where positron imaging has been used extensively to image dynamics of macronutrients, signalling molecules, trace elements, and contaminant metals under various conditions and perturbations. We describe how positron imaging is used in porous soils and sediments to visualize transport, flow, and microbial metabolic processes. We also address the interface between positron imaging and other imaging approaches, and present accompanying chemical analysis of labelled compounds for reviewed topics, highlighting the bridge between positron imaging and complementary techniques across scales. Finally, we discuss possible future applications of positron imaging and its potential as a nexus of interdisciplinary biogeochemical research.
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