2009
Pancreatic perfusion of healthy individuals and type 1 diabetic patients as assessed by magnetic resonance perfusion imaging
Hirshberg B, Qiu M, Cali AM, Sherwin R, Constable T, Calle RA, Tal MG. Pancreatic perfusion of healthy individuals and type 1 diabetic patients as assessed by magnetic resonance perfusion imaging. Diabetologia 2009, 52: 1561. PMID: 19488737, DOI: 10.1007/s00125-009-1406-8.Peer-Reviewed Original ResearchConceptsType 1 diabetic patientsPancreatic blood flowDiabetic patientsBlood flowIslet massHealthy volunteersPancreatic perfusionArterial spin labeling magnetic resonanceTotal pancreatic blood flowPancreatic beta-cell massConclusions/interpretationOur dataAims/hypothesisLossBeta-cell massMagnetic resonance perfusionSignificant differencesHuman pancreatic isletsDiabetes mellitusVascularised organsIslet functionMurine modelClamp studiesNormal volunteersHealthy individualsPatientsControl tissues
1997
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 cysts
1993
Functional brain imaging at 1.5 T using conventional gradient echo MR imaging techniques
Constable R, McCarthy G, Allison T, Anderson A, Gore J. Functional brain imaging at 1.5 T using conventional gradient echo MR imaging techniques. Magnetic Resonance Imaging 1993, 11: 451-459. PMID: 8316058, DOI: 10.1016/0730-725x(93)90463-n.Peer-Reviewed Original ResearchConceptsMotor cortexUse of MRMR imaging techniquesMotor areaEffects of activationNormal volunteersFrontal lobeVisual cortexMR imaging methodsBrain functionFunctional brainCortexExcellent depictionStimulus parametersVisual stimuliBrainGradient-echo imaging sequenceSignal changesImaging sequenceImaging techniquesSimilar responsesMsecActivationPhysiological responsesClinical scanner