CT & MRI scan difference

Here's a table highlighting the key differences between CT (Computed Tomography) and MRI (Magnetic Resonance Imaging) scans:-



CT scan

MRI scan

Bone cortex

White 

Black

Technology

Uses X-rays to create cross-sectional images

Uses strong magnetic fields and radio waves

Best for

Imaging bones, detecting fractures, and acute bleeding

Soft tissue evaluation (brain, muscles, heart, cancers)

Radiation Exposure

Yes, involves ionizing radiation (X-rays)

No, uses non-ionizing radiation

Image Detail

Better for bone details and dense tissues

Superior for soft tissues, ligaments, and organs

Scan Time

Typically faster (a few minutes)

Longer (30-60 minutes or more)

Cost

Generally less expensive

Generally more expensive

Contrast Agents

Uses iodine-based contrast agents (risk of allergy)

Uses gadolinium-based agents (less allergic reactions)

Artifacts

More susceptible to artifacts from metal objects

Less affected by metal, but can cause heating

Use in Pregnancy

Generally avoided due to radiation risk

Considered safer but used with caution

Movement Sensitivity

Less sensitive to patient movement

Very sensitive to movement; requires patient stillness

Availability

Widely available in many medical facilities

May be less available due to higher cost and complexity

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