Search results for "diffuusiotensorikuvaus"

showing 3 items of 3 documents

In vivo muscle morphology comparison in post-stroke survivors using ultrasonography and diffusion tensor imaging.

2019

AbstractSkeletal muscle architecture significantly influences the performance capacity of a muscle. A DTI-based method has been recently considered as a new reference standard to validate measurement of muscle structure in vivo. This study sought to quantify muscle architecture parameters such as fascicle length (FL), pennation angle (PA) and muscle thickness (tm) in post-stroke patients using diffusion tensor imaging (DTI) and to quantitatively compare the differences with 2D ultrasonography (US) and DTI. Muscle fascicles were reconstructed to examine the anatomy of the medial gastrocnemius, posterior soleus and tibialis anterior in seven stroke survivors using US- and DTI-based techniques…

0301 basic medicineAdultMaleFysiologiPhysiologylcsh:MedicineSkeletal musclelihaksettuki- ja liikuntaelimetArticle03 medical and health sciencesMuscle morphology0302 clinical medicinemorfologiaIn vivomedicineHumansin vivo -menetelmädiffuusiotensorikuvausSurvivorsskeletal musclelcsh:ScienceMuscle SkeletalAgedUltrasonographyMultidisciplinarybusiness.industrylcsh:RSkeletal muscleMiddle AgedIndividual leveldiffusion tensor imagingStroke030104 developmental biologymedicine.anatomical_structureDiffusion Tensor ImagingPost strokelcsh:QFemaleUltrasonographyMuscle architecturebusinessBiomedical engineering030217 neurology & neurosurgeryBiomedical engineeringDiffusion MRIScientific reports
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Physical activity, aerobic fitness, and brain white matter : Their role for executive functions in adolescence

2020

Highlights • Aerobic fitness level, but not physical activity, is related to white matter properties in the brain. • The relation between physical activity and working memory is moderated by fractional anisotropy (FA) of the corpus callosum. • The FA of the corpus callosum and superior corona radiata moderates the relation between aerobic fitness and working memory.

Malephysical activitySpatial memoryDevelopmental psychologyExecutive functionsExecutive Function0302 clinical medicinenuoretCOGNITIVE CONTROLDWI diffusion-weighted imagingFitnessdiffuusiotensorikuvaus315 Sport and fitness sciencesPLASTICITYFA fractional anisotropyChildOriginal ResearchTBSS Tract-Based Spatial Statisticslcsh:QP351-495White matterCognitionExecutive functionsdiffusion tensor imagingexecutive functionsmurrosikäRD radial diffusivityINTEGRITYfitnessfyysinen kuntomedicine.anatomical_structureDiffusion tensor imagingFemalePsychologyaivotRVP rapid visual information processingwhite matterNeurovetenskaperAD axial diffusivityfractional anisotropyfyysinen aktiivisuusMulti-stage fitness testendocrine systemtoiminnanohjaus (psykologia)AdolescentDISTORTION CORRECTIONMVPA moderate-to-vigorous intensity physical activityPhysical activityTFCE threshold-free cluster enhancementWhite matter03 medical and health sciencesWORKING-MEMORY030225 pediatricsmedicineAerobic exerciseHumansExerciseAgedOBJECTIVE MEASURESMD mean diffusivityWorking memoryPhysical activityNeurosciencesPUBERTAL CHANGESvalkea aineCORPUS-CALLOSUMlcsh:Neurophysiology and neuropsychologySWM patial working memoryVOLUMEMICROSTRUCTURECANTAB Cambridge Neuropsychological Automated Test BatteryMRI magnetic resonance imaging030217 neurology & neurosurgeryFractional anisotropy
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Three-dimensional architecture of the whole human soleus muscle in vivo

2018

Background Most data on the architecture of the human soleus muscle have been obtained from cadaveric dissection or two-dimensional ultrasound imaging. We present the first comprehensive, quantitative study on the three-dimensional anatomy of the human soleus muscle in vivo using diffusion tensor imaging (DTI) techniques. Methods We report three-dimensional fascicle lengths, pennation angles, fascicle curvatures, physiological cross-sectional areas and volumes in four compartments of the soleus at ankle joint angles of 69 ± 12° (plantarflexion, short muscle length; average ± SD across subjects) and 108 ± 7° (dorsiflexion, long muscle length) of six healthy young adults. Microdissection and…

Muscle fasciclelcsh:MedicinepohkeetlihaksetBiologyGeneral Biochemistry Genetics and Molecular Biology03 medical and health sciences0302 clinical medicinepassive muscle propertiesmedicinediffuusiotensorikuvausta315soleusSoleus muscleCentimeterGeneral Neurosciencelcsh:R030229 sport sciencesGeneral MedicineAnatomyFasciclediffusion tensor imagingmedicine.anatomical_structuremuscle architecturebiomekaniikkaAnkleGeneral Agricultural and Biological SciencesCadaveric spasmMuscle architecture030217 neurology & neurosurgeryMRIDiffusion MRI
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