An imaging technique that detects the energy emitted by hydrogen atoms in a magnetic field is known as?

1. magnetic resonance imaging (MRI)
2. radioactive tracer study
3. supermagnetic tomography (SMT)
4. computerized tomography (CT)
5. positron emission tomography (PET)

Answer:
Number 1, MRI or if you asked a chemist he/she would call it hydrogen nuclear magnetic resonance spectroscopy (HNMR). When you begin to study how one figures out the structure of organic molecules HNMR is one of the most powerful tools.
Amazingly enough, the first choice. Look at your question, look at the answers. Notice any overlap?

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