MRI relies upon a magnetic field and what?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the VetSkill Level 3 Diploma VN02 – Diagnostic Principles Test. Engage with multiple-choice questions, hints, and explanations. Achieve your certification!

Multiple Choice

MRI relies upon a magnetic field and what?

Explanation:
MRI imaging uses nuclear magnetic resonance, which needs a strong magnetic field and radiofrequency energy. The magnetic field aligns the hydrogen protons in tissues. A radiofrequency pulse then tips these protons away from alignment. As they realign with the field, they emit radiofrequency signals that the scanner detects and converts into images. The tissue differences in how quickly protons relax (T1 and T2) and in proton density give image contrast. Visible light cannot produce the MR signal, acoustics (sound waves) are used in ultrasound, and while electricity powers the magnets and coils, the imaging signal itself comes from the emitted radio waves.

MRI imaging uses nuclear magnetic resonance, which needs a strong magnetic field and radiofrequency energy. The magnetic field aligns the hydrogen protons in tissues. A radiofrequency pulse then tips these protons away from alignment. As they realign with the field, they emit radiofrequency signals that the scanner detects and converts into images. The tissue differences in how quickly protons relax (T1 and T2) and in proton density give image contrast. Visible light cannot produce the MR signal, acoustics (sound waves) are used in ultrasound, and while electricity powers the magnets and coils, the imaging signal itself comes from the emitted radio waves.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy