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6. Precession depends on the strength of the external magnetic field.
7. Varying the magentic field in an MRI scanner allows you to work out where the emitted radio waves are coming from.
8. What is the name of the frequency at which the protons precess?
- Larmor Frequence
- Lander Frequency
- Laurence Frequency
9. After the pulses of radio waves has ceased the nuclei relax and emmit what kind of wave?
10. Gamma Cameras are used with what?
- Ultrasound
- Radio waves
- Magnetic Fields
- Radioactive tracers
- X-rays
11. Patients don't need to actually have the radioactive tracer inside them.