2023
Arterial spin labeled perfusion imaging with balanced steady-state free precession readout and radial sampling
Han P, Marin T, Zhuo Y, Ouyang J, El Fakhri G, Ma C. Arterial spin labeled perfusion imaging with balanced steady-state free precession readout and radial sampling. Magnetic Resonance Imaging 2023, 102: 126-132. PMID: 37187264, PMCID: PMC10524790, DOI: 10.1016/j.mri.2023.05.005.Peer-Reviewed Original ResearchConceptsOff-resonance effectsBalanced steady-state free precessionPhase-cycling techniqueTemporal SNRBalanced steady-state free precession acquisitionRadial sampling schemeSpoiled gradient-recalled acquisitionRadial samplingCartesian sampling schemeBalanced steady-state free precession readoutK-space dataSampling schemeSpin labelingSteady-state free precessionK-spaceImage readoutBanding artifactsMotion-related artifactsReadoutFree precessionArterial spin labelingImage reconstructionParallel imagingImaging timePerfusion-weighted imaging
2021
Impact of multisession 40Hz tACS on hippocampal perfusion in patients with Alzheimer’s disease
Sprugnoli G, Munsch F, Cappon D, Paciorek R, Macone J, Connor A, El Fakhri G, Salvador R, Ruffini G, Donohoe K, Shafi M, Press D, Alsop D, Pascual Leone A, Santarnecchi E. Impact of multisession 40Hz tACS on hippocampal perfusion in patients with Alzheimer’s disease. Alzheimer's Research & Therapy 2021, 13: 203. PMID: 34930421, PMCID: PMC8690894, DOI: 10.1186/s13195-021-00922-4.Peer-Reviewed Original ResearchConceptsTemporal lobeMethodsIn two open-label studiesMild to moderate AD participantsPreclinical models of ADGamma bandBrain oscillatory activityModerate AD participantsBilateral temporal lobesEpisodic memoryAdministered 1 hSpectral power changesBrain areasModulates cerebral perfusionAD participantsPlacebo-controlled trialHippocampal perfusionModel of ADOpen-label studyNeural activityAssociated with alterationsNon-invasive countermeasureCognitive AssessmentCognitive impairmentCognitive protectionOscillatory activity