2023
On‐site construction of a point‐of‐care low‐field MRI system in Africa
Obungoloch J, Muhumuza I, Teeuwisse W, Harper J, Etoku I, Asiimwe R, Tusiime P, Gombya G, Mugume C, Namutebi M, Nassejje M, Nayebare M, Kavuma J, Bukyana B, Natukunda F, Ninsiima P, Muwanguzi A, Omadi P, van Gijzen M, Schiff S, Webb A, O'Reilly T. On‐site construction of a point‐of‐care low‐field MRI system in Africa. NMR In Biomedicine 2023, 36: e4917. PMID: 36914258, PMCID: PMC10330026, DOI: 10.1002/nbm.4917.Peer-Reviewed Original Research
2018
Design of a sustainable prepolarizing magnetic resonance imaging system for infant hydrocephalus
Obungoloch J, Harper J, Consevage S, Savukov I, Neuberger T, Tadigadapa S, Schiff S. Design of a sustainable prepolarizing magnetic resonance imaging system for infant hydrocephalus. Magnetic Resonance Materials In Physics, Biology And Medicine 2018, 31: 665-676. PMID: 29644479, PMCID: PMC6135672, DOI: 10.1007/s10334-018-0683-y.Peer-Reviewed Original ResearchConceptsLow power requirementsSpatial resolutionLF-MRIModest spatial resolutionMagnetic resonance imaging systemPower requirementsCoil systemImage spatial resolutionUnshielded environmentGradient fieldResonance imaging systemLow costDeployment potentialEnergy supplySpecific applicationsUnshielded roomImaging systemLow-field magnetic resonance imaging
2016
Design of a mobile, homogeneous, and efficient electromagnet with a large field of view for neonatal low-field MRI
Lother S, Schiff S, Neuberger T, Jakob P, Fidler F. Design of a mobile, homogeneous, and efficient electromagnet with a large field of view for neonatal low-field MRI. Magnetic Resonance Materials In Physics, Biology And Medicine 2016, 29: 691-698. PMID: 26861046, PMCID: PMC5695548, DOI: 10.1007/s10334-016-0525-8.Peer-Reviewed Original ResearchConceptsCryogen-free systemField mapping measurementsHigh B0 fieldsLow field devicesLow power consumptionSteel platesLight weightMagnetic resonance imaging systemSimple fabricationNumerical optimization algorithmHomogeneous magnetic fieldPower consumptionElectromagnetResonance imaging systemPower useB0 fieldLow-field scannersMagnetic fieldLow-field MRIField strengthHigh homogeneityMedical applicationsField limitationsLarge fieldMagnets
2013
Model-based rational feedback controller design for closed-loop deep brain stimulation of Parkinson's disease
Gorzelic P, Schiff S, Sinha A. Model-based rational feedback controller design for closed-loop deep brain stimulation of Parkinson's disease. Journal Of Neural Engineering 2013, 10: 026016. PMID: 23449002, DOI: 10.1088/1741-2560/10/2/026016.Peer-Reviewed Original ResearchConceptsFeedback controller designController designPID controlHigh-level control strategyBetter controller performanceFeedback control methodFeedback control problemController performanceDerivative controlControl methodFeedback controllerControl inputControl lawControl strategyProportional controlOnline estimatesComputational modelControl problemConsiderable further reductionDerivative methodologyOptimal controlAdaptive methodRelay capabilityStimulation algorithmDesign
2011
A square root ensemble Kalman filter application to a motor-imagery brain-computer interface
Kamrunnahar M, Schiff S. A square root ensemble Kalman filter application to a motor-imagery brain-computer interface. Annual International Conference Of The IEEE Engineering In Medicine And Biology Society (EMBC) 2011, 2011: 6385-6388. PMID: 22255799, PMCID: PMC5699860, DOI: 10.1109/iembs.2011.6091576.Peer-Reviewed Original Research
2009
Optimization of Electrode Channels in Brain Computer Interfaces
Kamrunnahar M, Dias N, Schiff S. Optimization of Electrode Channels in Brain Computer Interfaces. Annual International Conference Of The IEEE Engineering In Medicine And Biology Society (EMBC) 2009, 2009: 6477-6480. PMID: 19964437, PMCID: PMC2859435, DOI: 10.1109/iembs.2009.5333585.Peer-Reviewed Original ResearchConceptsBrain-computer interfaceFeature classificationMotor imagery tasksComputer interfaceBCI applicationsLinear discriminant analysisFeature selection algorithmFeature selection techniquesStepwise feature selectionFeature selectionSelection algorithmSelection techniquesImagery tasksOptimization approachOptimal numberTaskDiscrimination errorsHuman scalp electroencephalographyChannel combinationsElectrode channelsClassificationOptimum numberReliable selection
2006
Seizure Modulation with Applied Electric Fields in Chronically Implanted Animals
Sunderam S, Chernyy N, Mason J, Peixoto N, Weinstein S, Schiff S, Gluckman B. Seizure Modulation with Applied Electric Fields in Chronically Implanted Animals. Annual International Conference Of The IEEE Engineering In Medicine And Biology Society (EMBC) 2006, 2006: 1612-1615. PMID: 17946910, PMCID: PMC3547984, DOI: 10.1109/iembs.2006.259454.Peer-Reviewed Original Research
2000
Long-Term Follow-Up Data from the Shunt Design Trial
Kestle J, Drake J, Milner R, Sainte-Rose C, Cinalli G, Boop F, Piatt J, Haines S, Schiff S, Cochrane D, Steinbok P, MacNeil N. Long-Term Follow-Up Data from the Shunt Design Trial. Pediatric Neurosurgery 2000, 33: 230-236. PMID: 11155058, DOI: 10.1159/000055960.Peer-Reviewed Original ResearchConceptsFirst shunt failureShunt failureDifferential pressure valvesOverall shunt survivalShunt Design TrialShunt failure ratesLate complicationsShunt surgeryShunt survivalInitial treatmentTerm followShunt obstructionDelta valvesHydrocephalic childrenOriginal trialPediatric hydrocephalusSurvival advantagePatient statusPatientsTrialsDesign trialSignificant differencesObstructionOverdrainageInfection
1998
Randomized trial of cerebrospinal fluid shunt valve design in pediatric hydrocephalus.
Drake J, Kestle J, Milner R, Cinalli G, Boop F, Piatt J, Haines S, Schiff S, Cochrane D, Steinbok P, MacNeil N. Randomized trial of cerebrospinal fluid shunt valve design in pediatric hydrocephalus. Neurosurgery 1998, 43: 294-303; discussion 303-5. PMID: 9696082, DOI: 10.1097/00006123-199808000-00068.Peer-Reviewed Original ResearchConceptsShunt obstructionDifferential pressure valvesShunt failurePediatric hydrocephalusCerebrospinal fluid shunt failuresCerebrospinal fluid shunt insertionTreatment failure rateShunt failure ratesOrbis-Sigma valvePediatric neurosurgical centersUpright positionCerebrospinal fluid shuntsIndependent case reviewShunt insertionCerebral ventricleDelta valvesHydrocephalic childrenFailure rateNeurosurgical centersOutcome eventsCase reviewPatientsObstructionShunt valveInfection