State the purpose of the magnetic field in a magnetic resonance scanner - AQA - A-Level Physics - Question 5 - 2022 - Paper 5
Question 5
State the purpose of the magnetic field in a magnetic resonance scanner.
The purpose of the magnetic field in a magnetic resonance scanner is to align the spins of ... show full transcript
Worked Solution & Example Answer:State the purpose of the magnetic field in a magnetic resonance scanner - AQA - A-Level Physics - Question 5 - 2022 - Paper 5
Step 1
State the purpose of the magnetic field in a magnetic resonance scanner.
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Answer
The purpose of the magnetic field in a magnetic resonance scanner is to align the spins of protons or hydrogen nuclei.
Step 2
Describe the role of the radio frequency pulses in a magnetic resonance scanner.
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Answer
The radio frequency pulses excite the protons, flipping their spins. When the pulses are stopped, the protons relax and emit radio frequency signals, which are then detected to form images. This process allows for the visualization of internal structures in the body.
