Magnetic Resonance Imaging
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MEDICINE
Medical Imaging
Magnetic Resonance Imaging
MRI reveals the body's secrets without harmful radiation exposure
46 hours ago
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Why is MRI considered safer than CT scans for repeated imaging?
Because MRI uses lower doses of X-rays than CT scans
Because MRI images are less detailed and thus less risky
Because MRI does not use ionizing radiation, reducing exposure risks
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MEDICINE
Medical Imaging
Magnetic Resonance Imaging
Magnetic resonance imaging reveals detailed soft tissue structures without harmful radiation exposure
4 Feb 2026
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What fundamental property of hydrogen atoms does MRI exploit to generate images of the body's internal structures?
The emission of X-rays by hydrogen atoms when exposed to magnetic fields
The alignment and relaxation of hydrogen nuclei in a magnetic field after radiofrequency excitation
The absorption of ionizing radiation by hydrogen atoms to produce images
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MEDICINE
Medical Imaging
Magnetic Resonance Imaging
Magnetic resonance imaging reveals detailed anatomy and physiology without ionizing radiation exposure
1 Feb 2026
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What is the primary physical principle that allows MRI to generate images of the body's internal structures?
Nuclear magnetic resonance of hydrogen nuclei in a magnetic field
Emission of X-rays absorbed differently by tissues
Reflection of sound waves from tissue boundaries
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