Simultaneous imaging of magnetic resonance imaging and positron emission tomography by means of MRI-compatible optic fiber-based PET: A validation study in ex vivo rat brain

Masao Imaizumi*, Seiichi Yamamoto, Makoto Kawakami, Masaaki Aoki, Eiji Sugiyama, Yasukazu Kanai, Eku Shimosegawa, Jun Hatazawa

*この研究の対応する著者

研究成果: Article査読

6 被引用数 (Scopus)

抄録

Purpose: We developed a new type of scintillation detector ring for positron emission tomography (PET). In this device the scintillation detectors were connected with 2.6 m length optic fibers to transport scintillation light to a photomultiplier (PMT) located apart from the detector rings. The present study aimed to test the possibility of simultaneous imaging with PET and magnetic resonance imaging (MRI) by means of the present PET device in ex vivo rat brain. Materials and methods: The scintillation detector ring of 4 cm diameter was located in a magnetic field of 0.15 T open MRI. Simultaneous measurements of PET and MRI were performed in ex vivo rat brain after injection of 18F-fluorodeoxyglucose (18F-FDG) 37 MBq and 18F-NaF 37 MBq. Simultaneous data acquisition was performed for 10 min for PET and 5 min for T1-weighted MRI. Results: Simultaneous imaging of PET and MRI was possible without noticeable image distortion in the PET and MRI scans. In the fusion images, high uptake of 18F-FDG was identified in the Harderian glands and striatum. High uptake of 18F-NaF was found in the skull base and vault. Conclusions: The present study indicated the possibility of simultaneous imaging of PET and MRI by means of optic fiber-based scintillation detectors.

本文言語English
ページ(範囲)252-256
ページ数5
ジャーナルJapanese Journal of Radiology
27
6
DOI
出版ステータスPublished - 2009 7月
外部発表はい

ASJC Scopus subject areas

  • 放射線学、核医学およびイメージング

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