Resting-State Networks as Simultaneously Measured with Functional MRI and PET

J Nucl Med. 2017 Aug;58(8):1314-1317. doi: 10.2967/jnumed.116.185835. Epub 2017 Mar 2.


Functional MRI (fMRI) studies reported disruption of resting-state networks (RSNs) in several neuropsychiatric disorders. PET with 18F-FDG captures neuronal activity that is in steady state at a longer time span and is less dependent on neurovascular coupling. Methods: In the present study, we aimed to identify RSNs in 18F-FDG PET data and compare their spatial pattern with those obtained from simultaneously acquired resting-state fMRI data in 22 middle-aged healthy subjects. Results: Thirteen and 17 meaningful RSNs could be identified in PET and fMRI data, respectively. Spatial overlap was fair to moderate for the default mode, left central executive, primary and secondary visual, sensorimotor, cerebellar, and auditory networks. Despite recording different aspects of neural activity, similar RSNs were detected by both imaging modalities. Conclusion: The results argue for the common neural substrate of RSNs and encourage testing of the clinical utility of resting-state connectivity in PET data.

Keywords: brain connectivity; glucose metabolism; independent component analysis; multimodal imaging; positron emission tomography.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Brain Mapping*
  • Female
  • Fluorodeoxyglucose F18
  • Healthy Volunteers
  • Humans
  • Magnetic Resonance Imaging*
  • Male
  • Middle Aged
  • Multimodal Imaging*
  • Nerve Net / diagnostic imaging*
  • Nerve Net / physiology
  • Positron-Emission Tomography*
  • Rest / physiology*


  • Fluorodeoxyglucose F18