Search results for "MESH: Magnetic Resonance Spectroscopy"

showing 3 items of 3 documents

Intravoxel incoherent motion diffusion-weighted imaging in nonalcoholic fatty liver disease: a 3.0-T MR study.

2012

International audience; PURPOSE: To compare pure molecular diffusion, D, perfusion-related diffusion, D*, and perfusion fraction, f, determined from diffusion-weighted (DW) magnetic resonance (MR) imaging on the basis of the intravoxel incoherent motion (IVIM) theory in patients with type 2 diabetes with and without liver steatosis. MATERIALS AND METHODS: This prospective study was approved by the appropriate ethics committee, and written informed consent was obtained from all patients. Between December 2009 and September 2011, 108 patients with type 2 diabetes (51 men, 57 women; mean age, 50 years) underwent 3.0-T single-voxel point-resolved proton MR spectroscopy of the liver (segment VII…

MaleCirrhosisMagnetic Resonance SpectroscopyMESH : Fatty Liver[SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/ImagingMESH : AgedMESH : Prospective Studies030218 nuclear medicine & medical imagingMESH: Linear Models0302 clinical medicineNuclear magnetic resonanceMESH: Aged 80 and overMESH : Diabetes Mellitus Type 2Non-alcoholic Fatty Liver DiseaseMESH : Linear ModelsNonalcoholic fatty liver diseaseMESH : FemaleProspective StudiesMESH: Fatty LiverIntravoxel incoherent motion[ SDV.IB.IMA ] Life Sciences [q-bio]/Bioengineering/ImagingAged 80 and overMESH: AgedMESH: Statistics NonparametricMESH: Middle Aged[ INFO.INFO-IM ] Computer Science [cs]/Medical ImagingFatty liverMiddle AgedMESH : AdultMESH : Diffusion Magnetic Resonance Imaging3. Good health030220 oncology & carcinogenesisPotential confounderFemaleRadiologyMESH: Diabetes Mellitus Type 2Adultmedicine.medical_specialtyMESH : MaleMESH: Diffusion Magnetic Resonance ImagingStatistics Nonparametric03 medical and health sciencesmedicine[INFO.INFO-IM]Computer Science [cs]/Medical ImagingHumansRadiology Nuclear Medicine and imagingMESH : Middle AgedMESH : Aged 80 and overMESH : Statistics NonparametricAgedMESH: Humansbusiness.industryMESH: Magnetic Resonance SpectroscopyMESH : HumansMESH: Biological MarkersMESH: Adultmedicine.diseaseMr imagingMESH: MaleMESH: Prospective StudiesFatty LiverMESH : Biological MarkersDiffusion Magnetic Resonance ImagingDiabetes Mellitus Type 2Linear ModelsMESH : Magnetic Resonance SpectroscopySteatosisbusinessMESH: FemaleBiomarkersDiffusion MRI
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Bone marrow fat quantification of osteoporotic vertebral compression fractures: comparison of multi-voxel proton MR spectroscopy and chemical-shift g…

2011

Background Only a few studies have used in/opposed phase method for a quantitative evaluation of fat fraction in the spine. Purpose To compare multivoxel proton MR spectroscopy and chemical-shift gradient-echo MR imaging for bone marrow fat quantification in vertebral compression fractures (VCF). Material and Methods Vertebral marrow fat quantification in fifteen patients was measured at 3.0-T. Multi-voxel proton spectroscopy (MRS) and in/opposed-phase MR imaging using a fat map build with a triple-echo gradient-echo sequence was used. All the patients had benign vertebral collapse. Bone marrow fat content was evaluated by both techniques in compressed (acute or chronic) and in non-compress…

MaleIn vivo magnetic resonance spectroscopyMagnetic Resonance Spectroscopy[SDV]Life Sciences [q-bio]Fat quantificationcomputer.software_genreMESH: Magnetic Resonance Imaging030218 nuclear medicine & medical imagingMESH: Aged 80 and over0302 clinical medicineBone MarrowVoxelFractures CompressionMESH: Fractures CompressionAged 80 and overMESH: AgedMESH: Middle Aged[ INFO.INFO-IM ] Computer Science [cs]/Medical ImagingRadiological and Ultrasound TechnologyGeneral MedicineMiddle AgedCompression (physics)LipidsMagnetic Resonance Imagingmedicine.anatomical_structureAcute DiseaseSpinal FracturesMESH: Acute DiseaseFemaleMESH: Bone MarrowMESH: OsteoporosisAdultMESH: Spinal Fractures03 medical and health sciences[INFO.INFO-IM]Computer Science [cs]/Medical ImagingmedicineHumansRadiology Nuclear Medicine and imagingAgedMESH: HumansMESH: Magnetic Resonance Spectroscopybusiness.industryMESH: Chronic DiseaseVertebral compression fractureMESH: Adultmedicine.diseaseMESH: LipidsMr imagingMESH: MaleProton mr spectroscopyChronic DiseaseOsteoporosisBone marrowbusinessNuclear medicineMESH: Femalecomputer030217 neurology & neurosurgeryActa Radiologica
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Liver methylene fraction by dual- and triple-echo gradient-echo imaging at 3.0T: Correlation with proton MR spectroscopy and estimation of robustness…

2011

Purpose To assess the systematic errors in liver methylene fraction (LMF) resulting from fat–fat interference effects with dual- and triple-echo gradient-recalled-echo Dual/Triple GRE) sequences and to test the robustness of these sequences after iron overloading. Materials and Methods Forty type-2 diabetic patients underwent LMF measurement by 3.0T 1H magnetic resonance spectroscopy (corrected for T1 and T2 decays) as the reference standard and liver fat fraction (%Fat) measurement by four Dual/Triple GRE sequences with 20° and 60° flip angle (α), corrected for T1 recovery. The same four sequences were repeated in eight patients after ferumoxide injection. Corrections for systematic errors…

MaleMagnetic Resonance SpectroscopyMESH : Fatty LiverMESH: Echo-Planar Imaging[SDV]Life Sciences [q-bio]Carbon Compounds InorganicMESH : Statistics as TopicStatistics as TopicMESH : AgedContrast MediaMESH : Carbon Compounds InorganicMESH : Tissue Distribution030218 nuclear medicine & medical imagingCorrelationchemistry.chemical_compound0302 clinical medicineMESH : DextransNon-alcoholic Fatty Liver DiseaseMESH : FemaleTissue DistributionMESH: DextransMethyleneMagnetite NanoparticlesMESH: Fatty LiverMESH: AgedMESH: Middle Agedmedicine.diagnostic_testEcho-Planar ImagingDextransNuclear magnetic resonance spectroscopyMESH : AdultMiddle AgedMESH: Reproducibility of ResultsAdipose TissueLiverFemale030211 gastroenterology & hepatologyMESH : Sensitivity and SpecificityProtonsMESH: Adipose TissueAdultIron OverloadMESH : MaleMESH: Magnetite NanoparticlesMESH : Adipose TissueSensitivity and SpecificityMESH: Iron Overload03 medical and health sciencesFlip angleRobustness (computer science)MESH: Contrast MediaLinear regressionmedicineMESH : ProtonsHumansMESH : Middle AgedRadiology Nuclear Medicine and imagingMESH: Tissue DistributionMESH: Statistics as TopicAgedMESH : Contrast MediaMESH : Iron OverloadMESH: HumansMESH : Echo-Planar Imaging[ SDV ] Life Sciences [q-bio]MESH: Magnetic Resonance Spectroscopybusiness.industryMESH : Reproducibility of ResultsMESH : HumansMESH: Biological MarkersMESH: Carbon Compounds InorganicMESH : LiverMESH : Magnetite NanoparticlesReproducibility of ResultsMESH: AdultMagnetic resonance imagingMESH: MaleMESH: Sensitivity and SpecificityProton mr spectroscopyMESH : Biological MarkersFatty LiverchemistryMESH : Magnetic Resonance SpectroscopyMESH: ProtonsNuclear medicinebusinessMESH: FemaleBiomarkersMESH: LiverJournal of Magnetic Resonance Imaging
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