Motion artifact in T2‐weighted fast spin‐echo images of the liver: Effect on image contrast and reduction of artifact using respiratory triggering in normal volunteers
Choe K, Smith R, Wilkens K, Constable R. Motion artifact in T2‐weighted fast spin‐echo images of the liver: Effect on image contrast and reduction of artifact using respiratory triggering in normal volunteers. Journal Of Magnetic Resonance Imaging 1997, 7: 298-302. PMID: 9090581, DOI: 10.1002/jmri.1880070207.Peer-Reviewed Original ResearchConceptsFast spin-echo imagesSpin-echo imagesMultiple small cystsT2-weighted sequencesSpin-echo T2-weighted sequencesPatient triggeringFast spin-echo T2-weighted sequencesT2-weighted fast spin-echo imagesHealthy volunteersSmall cystsNormal volunteersRespiratory motionLiverRespiratory cycleCystsVolunteersGallbladderSpleenRespiratory triggeringImproved visualizationMotion artifactsSD/NSignificant improvementFlow compensationIndividual cystsAn fMRI study of the human cortical motor system response to increasing functional demands
Wexler B, Fulbright R, Lacadie C, Skudlarski P, Kelz M, Constable R, Gore J. An fMRI study of the human cortical motor system response to increasing functional demands. Magnetic Resonance Imaging 1997, 15: 385-396. PMID: 9223039, DOI: 10.1016/s0730-725x(96)00232-9.Peer-Reviewed Original ResearchConceptsMotor-sensory areasSupplementary motor areaFunctional magnetic resonance imagingPremotor areasMotor areaMultiple motor areasComplexity of movementCortical motor systemRight-hand finger movementsIndex finger movementsFinger movementsMagnetic resonance imagingInferior parietal areasConsistent lateralizationResonance imagingBrain regionsActivation changesMotor system responsesParietal areasHand finger movementsPreliminary reproducibility studyFMRI studySignificant main effectWeek periodGreater increase