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Future Prospects of Positron Emission Tomography-Magnetic Resonance Imaging Hybrid Systems and Applications in Psychiatric Disordersopen access

Authors
Son, Young-DonKim, Young-BoKim, Jong-HoonKim, Jeong-HeeKwon, Dae-HyukLee, HaigunCho, Zang-Hee
Issue Date
5월-2022
Publisher
MDPI
Keywords
positron emission tomography; magnetic resonance imaging; high resolution; hybrid imaging; psychiatric disorders
Citation
PHARMACEUTICALS, v.15, no.5
Indexed
SCIE
SCOPUS
Journal Title
PHARMACEUTICALS
Volume
15
Number
5
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/143088
DOI
10.3390/ph15050583
ISSN
1424-8247
Abstract
A positron emission tomography (PET)-magnetic resonance imaging (MRI) hybrid system has been developed to improve the accuracy of molecular imaging with structural imaging. However, the mismatch in spatial resolution between the two systems hinders the use of the hybrid system. As the magnetic field of the MRI increased up to 7.0 tesla in the commercial system, the performance of the MRI system largely improved. Several technical attempts in terms of the detector and the software used with the PET were made to improve the performance. As a result, the high resolution of the PET-MRI fusion system enables quantitation of metabolism and molecular information in the small substructures of the brainstem, hippocampus, and thalamus. Many studies on psychiatric disorders, which are difficult to diagnose with medical imaging, have been accomplished using various radioligands, but only a few studies have been conducted using the PET-MRI fusion system. To increase the clinical usefulness of medical imaging in psychiatric disorders, a high-resolution PET-MRI fusion system can play a key role by providing important information on both molecular and structural aspects in the fine structures of the brain. The development of high-resolution PET- MR systems and their potential roles in clinical studies of psychiatric disorders were reviewed as prospective views in future diagnostics.
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