Synopsis of MRI 1) Put subject in big magnetic field [and leave him there]  Magnetizes the H nuclei in water (H2O)
{"Image DocumentName": "Synopsis of MRI1) Put subject in big magnetic field [and leave him there] \uf0de Magnetizes the H nuclei in water (H2O)", "Image ImageDescription": "2) Transmit radio waves into subject [about 3 ms] \uf0de Perturbs the magnetization of the water. 3) Turn off radio wave transmitter. 4) Receive radio waves re-transmitted by subject\u2019s H nuclei. \uf0de Manipulate re-transmission by playing with H magnetization with extra time-varying magnetic fields during this readout interval [ ms] \uf0de Radio waves transmitted by H nuclei are sensitive to magnetic fields \u2014 those imposed from outside and those generated inside the body: \uf0de Magnetic fields generated by tissue components change the data and so will change the computed image. 5) Store measured radio wave data vs time. \uf0de Now go back to 2) to get some more data [many times] 6) Process raw ( k-space ) radio wave data to reconstruct images.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}