Abstract:
:Noninvasive imaging at the molecular level is an emerging field in biomedical research. This paper introduces a new technology synergizing two leading imaging methodologies: positron emission tomography (PET) and magnetic resonance imaging (MRI). Although the value of PET lies in its high-sensitivity tracking of biomarkers in vivo, it lacks resolving morphology. MRI has lower sensitivity, but produces high soft-tissue contrast and provides spectroscopic information and functional MRI (fMRI). We have developed a three-dimensional animal PET scanner that is built into a 7-T MRI. Our evaluations show that both modalities preserve their functionality, even when operated isochronously. With this combined imaging system, we simultaneously acquired functional and morphological PET-MRI data from living mice. PET-MRI provides a powerful tool for studying biology and pathology in preclinical research and has great potential for clinical applications. Combining fMRI and spectroscopy with PET paves the way for a new perspective in molecular imaging.
journal_name
Nat Medjournal_title
Nature medicineauthors
Judenhofer MS,Wehrl HF,Newport DF,Catana C,Siegel SB,Becker M,Thielscher A,Kneilling M,Lichy MP,Eichner M,Klingel K,Reischl G,Widmaier S,Röcken M,Nutt RE,Machulla HJ,Uludag K,Cherry SR,Claussen CD,Pichler BJdoi
10.1038/nm1700subject
Has Abstractpub_date
2008-04-01 00:00:00pages
459-65issue
4eissn
1078-8956issn
1546-170Xpii
nm1700journal_volume
14pub_type
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