2012
Selective homonuclear polarization transfer for spectroscopic imaging of GABA at 7T
Pan JW, Duckrow RB, Spencer DD, Avdievich NI, Hetherington HP. Selective homonuclear polarization transfer for spectroscopic imaging of GABA at 7T. Magnetic Resonance In Medicine 2012, 69: 310-316. PMID: 22505305, PMCID: PMC3407348, DOI: 10.1002/mrm.24283.Peer-Reviewed Original ResearchMeSH KeywordsAlgorithmsBrainEpilepsyGamma-Aminobutyric AcidHumansMagnetic Resonance SpectroscopyNeurotransmitter AgentsProtonsReproducibility of ResultsSensitivity and SpecificityConceptsEpilepsy patientsN-acetyl aspartate ratioSupplementary motor areaControl volunteersThalamic GABAMotor areaAspartate ratioGABAGABA resonancePatientsSingle-shot methodHuman brainPolarization transfer methodsPolarization transferMacromolecule resonancesHomonuclear polarization transferSpectroscopic imagingThalamusSuppression pulses
1999
Measuring the coherence of intracranial electroencephalograms
Zaveri H, Williams W, Sackellares J, Beydoun A, Duckrow R, Spencer S. Measuring the coherence of intracranial electroencephalograms. Clinical Neurophysiology 1999, 110: 1717-1725. PMID: 10574287, DOI: 10.1016/s1388-2457(99)00136-4.Peer-Reviewed Original ResearchConceptsProbability density functionDensity functionStatistical testingGaussian random processExact analytic formParameter valuesDifferent parameter valuesCoherence estimatesEstimator parametersRandom processAnalytic formStatistical characteristicsSample spectraEstimator performanceType II errorSingle epochMeasurement accuracyCoherence estimatorPoor estimationSmall numberPrevious applicationsMeasurements of coherencePower analysisEstimationEstimates
1998
Cerebral blood flow velocity decreases during cognitive stimulation in Huntington's disease
Deckel A, Cohen D, Duckrow R. Cerebral blood flow velocity decreases during cognitive stimulation in Huntington's disease. Neurology 1998, 51: 1576-1583. PMID: 9855504, DOI: 10.1212/wnl.51.6.1576.Peer-Reviewed Original ResearchConceptsAnterior cerebral arteryAnterior cerebral artery flow velocityCerebral artery flow velocityBlood flow velocity changesMiddle cerebral arteryCerebral arteryArtery flow velocityHD patientsTranscranial Doppler ultrasonographyFlow velocity changesControl subjectsMaze testHuntington's diseaseCerebral blood flow velocity changesBlood flow velocity decreasesLeft anterior cerebral arteryMiddle cerebral artery velocityCognitive test scoresCerebral blood flow velocityBlood flow velocity increasePorteus Maze TestRating ScaleCognitive testingTrails TestAsymptomatic HD patients