방사선사나라 Radiographer Nara

(영어, 영문, English) Low-frequency radio waves penetrate the tissue and reflect back off magnetized spins within the object. In MRI, an RF wave, or an RF pulse, is transmitted into the patient, and a signal is received from magnetized spins (protons) in the body. 1. If spining and unpaired protons are placed in an external magnetic field, they will lined up with that magnatic field. (It's the time ..