Abstract
This paper presents a survey of electron paramagnetic resonance (EPR) image registration. Image registration is the process of overlaying images (two or more) of the same scene taken at different times, from different viewpoints and/or different techniques. EPR-imaging (EPRI) techniques belong to the functional-imaging modalities and therefore suffer from a lack of anatomical reference which is mandatory in preclinical imaging. For this reason, it is necessary to merging EPR images with other modalities which allow for obtaining anatomy images. Methodological analysis and review of the literature were done, providing a summary for developing a good foundation for research study in this field which is crucial in understanding the existing levels of knowledge. Out of these considerations, the aim of this paper is to enhance the scientific community’s understanding of the current status of research in EPR preclinical image registration and also communicate to them the contribution of this research in the field of image processing.
Highlights
The application of electron paramagnetic resonance (EPR) spectroscopy and imaging to human subjects has been made possible by recent technical and scientific developments
Insufficient anatomical details provided by electron paramagnetic resonanceimaging (EPRI), necessitates the use of other anatomic-imaging references for accurate interpretation of the EPR images, especially in an in vivo setting
Functional information from EPR imaging supplemented with anatomical knowledge delivers information about oxygenation, redox state, pH, or thiol concentration to be obtained from a chosen region of interest (ROI)
Summary
The application of electron paramagnetic resonance (EPR) spectroscopy and imaging to human subjects has been made possible by recent technical and scientific developments. The wide range of electron paramagnetic resonanceimaging (EPRI) applications enabling mapping live tissue microenvironment parameters such as redox state, pH, thiol concentration, and especially oxygen partial pressure (pO2). This makes EPRI an attractive functional-imaging modality for medical applications. The question arises how to merge EPRI with tissue structureimaging modalities. This is important in the context of future human applications and preclinical studies
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