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URIisvariable /configurable/flexible noisy analysisbased on >> statistics manymodesoptions/alternatives 3tissues wm => myelinated axons thanGM on T1 csf =>clearfluid inventricles,lighter cisterns , subara .GM darker on TelFLARspace 6m=neuronalcell bodies , dendrites , synapsesT1- darhypnte contextdeep nuclei (bg , thalamus T2f darker onT1 lighter on T2 nowuRI works HebX · body haslotsofH atoms (mainly in water) , theseItnuclei - act liketinymagnetsprotons · inside a strong external magneticfield(Bo) , many ofthese protonsalign eitherwith or against thefield · an RFpulseisappliedatthe "larmorfrequency", which tips theprotonalignmentawayfromthemagneticfield thismovestheminto high-energy , unstablestate · after theRFpulsestops , protonsreturntotheir original alignmentvia2mainprocesses

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Sep8 , 2025 signals decaying afterRFpulse lecture I 3mainquantities (1)densityofwater+ feet)protondensity (2)Terelaxationtime=> sensitiveto D (3)Terelaxationtime tissue type tissuetypes · moleculartumbling Speed corticalsurfaces + thickness ↑ subcorticalstructure + Snapelocal Mchanges structuralURL 4 .does not distinguithbonefrom air limitations

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