0000000000586312

AUTHOR

Matteo Figini

0000-0002-8238-2262

showing 3 related works from this author

A longitudinal DTI and histological study of the spinal cord reveals early pathological alterations in G93A-SOD1 mouse model of amyotrophic lateral s…

2017

Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease characterized by selective motor neuron degeneration in the motor cortex, brainstem and spinal cord. It is generally accepted that ALS is caused by death of motor neurons, however the exact temporal cascade of degenerative processes is not yet completely known. To identify the early pathological changes in spinal cord of G93A-SOD1 AIS mice we performed a comprehensive longitudinal analysis employing diffusion-tensor magnetic resonance imaging alongside histology and electron microscopy, in parallel with peripheral nerve histology. We showed the gradient of degeneration appearance in spinal cord white and gray matter, startin…

0301 basic medicinePathologyNeurologyTime FactorsMotor neuron diseasesSensory Receptor CellMice0302 clinical medicineImage Processing Computer-AssistedAxonAmyotrophic lateral sclerosisGray MatterAnthracenesWhite MatterMitochondriamedicine.anatomical_structureDiffusion Tensor ImagingNeurologySpinal CordG93A-SOD1 miceBrainstemHumanMotor cortexmedicine.medical_specialtyAxon degenerationTime FactorSensory Receptor CellsSOD1Mice TransgenicWhite matter03 medical and health sciencesMagnetic resonance imagingDevelopmental NeuroscienceMicroscopy Electron TransmissionmedicineElectron microscopyAnimalsHumansMotor neuron diseaseAmyotrophic lateral sclerosiAnimalbusiness.industrySuperoxide DismutaseAmyotrophic Lateral SclerosisSpinal cordmedicine.diseaseAmyotrophic lateral sclerosisMice Inbred C57BLDisease Models Animal030104 developmental biologyAnthracenebusinessNeuroscience030217 neurology & neurosurgeryExperimental neurology
researchProduct

Mathematical models for the diffusion magnetic resonance signal abnormality in patients with prion diseases

2014

In clinical practice signal hyperintensity in the cortex and/or in the striatum on magnetic resonance (MR) diffusion-weighted images (DWIs) is a marker of sporadic Creutzfeldt–Jakob Disease (sCJD). MR diagnostic accuracy is greater than 90%, but the biophysical mechanisms underpinning the signal abnormality are unknown. The aim of this prospective study is to combine an advanced DWI protocol with new mathematical models of the microstructural changes occurring in prion disease patients to investigate the cause of MR signal alterations. This underpins the later development of more sensitive and specific image-based biomarkers. DWI data with a wide a range of echo times and diffusion weightin…

MalePathologysCJD sporadic Creutzfeldt–Jakob diseaseROI region of interestPrion diseasePrPSc prion protein scrapieElectroencephalographyFOV field of viewlcsh:RC346-429Prion DiseasesADC apparent diffusion coefficientTI inversion timeRPE rapidly progressive encephalopathyAged 80 and overTE echo timeBrain Mappingmedicine.diagnostic_testBrainRegular ArticleMiddle AgedBIC Bayesian information criterionTR repetition timemedicine.anatomical_structureNeurologylcsh:R858-859.7FemaleMPRAGE magnetization-prepared rapid acquisition gradient-echoAbnormalitySS-SE single shot spin-echoAdultmedicine.medical_specialtyCognitive NeuroscienceCreutzfeldt–Jakob diseaseCNR contrast to noise ratioEPI echo-planar imagingNeuropathologyPrPC prion protein cellularGrey matterSpongiform degenerationlcsh:Computer applications to medicine. Medical informaticsEEG electroencephalogramDiffusion MRINeuroimagingImage Interpretation Computer-AssistedmedicineHumansRadiology Nuclear Medicine and imaginglcsh:Neurology. Diseases of the nervous systemAgedCJD Creutzfeldt–Jakob diseaseGSS Gerstmann–Sträussler–Scheinker syndromebusiness.industryDWI diffusion weighted imagingDiffusion MRI; Biophysical models; Creutzfeldt-Jakob disease; Prion disease; Spongiform degenerationMagnetic resonance imagingModels TheoreticalHyperintensityCreutzfeldt-Jakob diseaseDiffusion Magnetic Resonance ImagingNeurology (clinical)businessBiophysical modelsDiffusion MRINeuroImage: Clinical
researchProduct

Comparison of Diffusion MRI Acquisition Protocols for the In Vivo Characterization of the Mouse Spinal Cord: Variability Analysis and Application to …

2016

Diffusion-weighted Magnetic Resonance Imaging (dMRI) has relevant applications in the microstructural characterization of the spinal cord, especially in neurodegenerative diseases. Animal models have a pivotal role in the study of such diseases; however, in vivo spinal dMRI of small animals entails additional challenges that require a systematical investigation of acquisition parameters. The purpose of this study is to compare three acquisition protocols and identify the scanning parameters allowing a robust estimation of the main diffusion quantities and a good sensitivity to neurodegeneration in the mouse spinal cord. For all the protocols, the signal-to-noise and contrast-to noise ratios…

MaleDTI-MRI spinal cord ALSPathologylcsh:MedicineSignal-To-Noise RatioNervous System030218 nuclear medicine & medical imagingDiagnostic RadiologyDiffusionMice0302 clinical medicineSuperoxide Dismutase-1Materials PhysicsMedicine and Health SciencesImage Processing Computer-AssistedAmyotrophic lateral sclerosisDiffusion (business)lcsh:ScienceMicrostructureMusculoskeletal SystemBrain MappingMultidisciplinarymedicine.diagnostic_testRadiology and ImagingPhysicsAnimal ModelsCondensed Matter PhysicsMagnetic Resonance Imagingmedicine.anatomical_structureDiffusion Tensor ImagingSpinal CordPhysical SciencesAnatomyResearch Articlemedicine.medical_specialtyImaging TechniquesBrain MorphometryMaterials ScienceMaterial PropertiesNeuroimagingMouse ModelsMice TransgenicResearch and Analysis Methods03 medical and health sciencesModel OrganismsDiagnostic MedicineFractional anisotropymedicineAnimalsSensitivity (control systems)AllelesProtocol (science)business.industryAmyotrophic Lateral Sclerosislcsh:RBiology and Life SciencesReproducibility of ResultsMagnetic resonance imagingmedicine.diseaseSpinal cordSpineNeuroanatomyDisease Models AnimalDiffusion Magnetic Resonance ImagingMutationAnisotropylcsh:Qbusiness030217 neurology & neurosurgeryBiomedical engineeringDiffusion MRINeurosciencePLoS ONE
researchProduct