Why Does MRI Make Noise? Is It Dangerous?

If you’ve ever had an MRI scan, you may have noticed loud banging, knocking, or buzzing sounds during the procedure. Many patients wonder why these noises occur and if they are harmful. Let’s break it down.

Why Does MRI Make Noise?

The sound in an MRI scan comes from the magnetic field and gradient coils inside the machine. Here’s what happens:

1. Strong Magnetic Field – MRI uses a powerful magnetic field to align hydrogen atoms in the body.

2. Gradient Coils Switching – Small coils in the scanner switch on and off rapidly to create images.

3. Vibrations – The fast switching of coils causes vibrations in the machine, producing banging or knocking noises.

These noises can vary depending on the type of scan and the body part being imaged. Some sequences are louder than others.

Is MRI Noise Dangerous?

No, the noise itself is not dangerous. It is simply a byproduct of the imaging process. However, the sound can be uncomfortable or startling, especially for sensitive individuals.

Precautions Taken:

• Earplugs or Headphones – Most MRI centers provide ear protection to reduce the noise level.

• Music or Audio – Some machines allow patients to listen to music during the scan.

• Communication – The technician can communicate with you throughout the scan to ensure comfort.

Tips to Handle MRI Noise

1. Use Ear Protection – Always wear provided earplugs or headphones.

2. Relax and Breathe – Calm breathing can reduce anxiety caused by the noise.

3. Ask About Music – Many MRI centers offer music to make the experience more comfortable.

4. Prepare Mentally – Knowing that the noise is normal and harmless can reduce stress.

Key Takeaways

• MRI noise is completely normal and caused by the magnetic coils vibrating.

• The sound is not harmful, but can be uncomfortable.

• Ear protection, music, and communication with the technician help make the scan easier.

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Conclusion: MRI noise can seem loud and strange, but it is a sign of the machine working correctly. With proper preparation and ear protection, you can have a safe and stress-free MRI experience.

 

MRI Claustrophobia: What It Is and How to Handle It

Undergoing an MRI scan can be stressful for some people, especially those who feel anxious or uncomfortable in small, enclosed spaces. This fear is known as claustrophobia, and it can make the MRI experience challenging.

What is MRI Claustrophobia?

Claustrophobia is the fear of being in confined spaces. During an MRI scan, patients are required to lie still inside a narrow, tube-like machine for a period of time. For some, this enclosed environment can trigger:

• Panic or anxiety

• Rapid heartbeat

• Sweating

• Feeling of suffocation or dizziness

Even though MRI machines are completely safe, claustrophobia can make it difficult for a patient to complete the scan.

Symptoms of Claustrophobia During MRI

• Feeling trapped or panicky inside the scanner

• Difficulty breathing or shallow breathing

• Increased heart rate or palpitations

• Nausea or dizziness

• Desire to escape or leave immediately

Tips to Handle MRI Claustrophobia

1. Talk to the Radiologist or Technician

   • Inform them about your claustrophobia.

   • They can provide guidance, reassurance, or adjust the scan protocol.

2. Use Open MRI or Wide-Bore MRI

   • Open MRI machines have a more spacious design.

   • Wide-bore MRIs are less restrictive than standard MRIs.

3. Practice Relaxation Techniques

   • Deep breathing exercises

   • Guided meditation or visualization

   • Listening to calming music during the scan

4. Bring a Friend or Family Member

   • Some centers allow a companion to be present, which can provide comfort.

5. Mild Sedation (If Necessary)

   • In severe cases, doctors may prescribe mild sedatives to reduce anxiety.

   • Sedation helps patients stay calm and complete the scan safely.

6. Stay Informed About the Procedure

   • Understanding the steps of the MRI can reduce fear of the unknown.

   • Ask questions about the noise, duration, and positioning.

Key Takeaways

• MRI claustrophobia is common and normal.

• Most patients can successfully complete the scan with proper preparation and support.

• Options like open MRI, relaxation techniques, and mild sedation make the experience easier.

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Conclusion: Feeling anxious during an MRI is nothing to be ashamed of. By preparing mentally, communicating with the medical team, and using available solutions, claustrophobic patients can have a comfortable and stress-free MRI experience.

Difference between thrombolysis and thrombectomy, Thrombolysis, Thrombectomy.

 Here’s the difference between thrombolysis and thrombectomy in simple terms:

1. Thrombolysis 🩸💊

• What: Giving a drug (like Alteplase – tPA) to dissolve the clot.

• How: Through IV injection or catheter directly into the vessel.

• When used: Best if given early (stroke within 4.5 hrs, heart attack within 12 hrs).

• Advantage: Non-surgical, quick.

• Disadvantage: Risk of bleeding (esp. brain hemorrhage).

2. Thrombectomy 🩸🛠️

• What: Physically removing the clot using a catheter or device.

• How: Interventional radiology or cath-lab procedure (e.g., mechanical thrombectomy in stroke, PCI with stent in heart attack).

• When used:

  • Stroke: Large vessel occlusion (up to 6–24 hrs in selected cases).

  • Heart attack: PCI (angioplasty + stent) preferred over thrombolysis.

• Advantage: Directly clears big clots, effective when thrombolysis fails.

• Disadvantage: Needs special setup & trained experts, more costly.

👉 In short:

• Thrombolysis = “Clot-dissolving medicine”

• Thrombectomy = “Clot-removing procedure”

Thrombolyse / Thrombolysis , How it works, When it’s used, Risks / Complications.

 Thrombolyse / Thrombolysis means breaking down or dissolving a blood clot (thrombus) that is blocking blood flow in a blood vessel.

🔹 How it works:

• Special medicines called thrombolytic agents (e.g., Alteplase [tPA], Streptokinase, Urokinase) are injected into a vein or directly into the blocked vessel.

• These drugs activate the body’s own clot-dissolving system by converting plasminogen → plasmin, which breaks down fibrin (the main clot component).

🔹 When it’s used:

• Acute ischemic stroke (within 4.5 hours of onset)

• Myocardial infarction (heart attack) (when PCI isn’t available quickly)

• Massive pulmonary embolism (PE) with shock

• Deep vein thrombosis (DVT) or limb ischemia in selected cases

🔹 Risks / Complications:

• Major risk is bleeding, especially intracranial hemorrhage

• Contraindicated in patients with recent surgery, trauma, uncontrolled hypertension, or bleeding disorders

👉 So, in short: Thrombolysis = clot-busting treatment to restore blood flow and save tissue/organ function.

MRI vs CT Scan – Which Scan Is Better and When?

 

MRI vs CT Scan – Which Scan Is Better and When?

Medical imaging plays a crucial role in diagnosing diseases. Two of the most commonly used imaging tests are MRI (Magnetic Resonance Imaging) and CT (Computed Tomography). Many patients and students often ask:
Which scan is better – MRI or CT?
The answer depends on the medical condition and body part being examined.

Let’s understand this in simple terms.

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What is a CT Scan?

CT scan uses X-rays to create detailed cross-sectional images of the body. It is fast and widely available, making it very useful in emergency situations.

CT Scan is better for:

• Head injury & trauma

• Brain hemorrhage (bleeding)

• Lung diseases (HRCT chest)

• Bone fractures

• Abdomen emergencies

• CT Angiography

Advantages of CT:

✔ Very fast scan
✔ Excellent for bones and lungs
✔ Best for emergency cases

⚠ CT uses ionizing radiation, so unnecessary repeated scans should be avoided.

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What is an MRI Scan?

MRI uses a strong magnetic field and radio waves to produce high-resolution images of soft tissues. It does not use radiation.

MRI is better for:

• Brain tumors & stroke (non-emergency)

• Spine problems (slip disc, nerve compression)

• Knee, shoulder & joint injuries

• Ligaments & cartilage

• Soft tissue tumors

Advantages of MRI:

✔ No radiation
✔ Excellent soft-tissue contrast
✔ Very detailed images

⚠ MRI takes longer time and is not suitable for patients with certain metal implants.

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MRI vs CT – Quick Comparison Table

Feature	MRI	CT
Radiation	❌ No	✔ Yes
Technology	Magnet & radio waves	X-rays
Best for	Soft tissues	Bones & lungs
Scan time	Longer	Faster
Emergency use	Limited	Excellent
Cost	Higher	Lower

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Which scan is better and when?

Choose CT Scan when:

• Emergency or trauma case

• Suspected internal bleeding

• Lung or bone evaluation

• Quick diagnosis is required

Choose MRI Scan when:

• Detailed soft-tissue evaluation needed

• Brain, spine, joints, or nerves

• Repeated follow-up scans

• Radiation exposure should be avoided

👉 Final decision is always made by the doctor, based on clinical condition.

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Conclusion

✔ CT and MRI are both powerful diagnostic tools
✔ CT is best for speed, bones, lungs, and emergencies
✔ MRI is best for soft tissues and radiation-free imaging

Understanding the difference helps patients feel more confident and helps students build strong fundamentals in radiology.

For more radiology education and imaging guidance, follow Radiographic Gyan.

What is MRI? | Does MRI Use Radiation? (Complete Guide)

 

What is MRI? | Does MRI Use Radiation? (Complete Guide)

What is MRI?

MRI stands for Magnetic Resonance Imaging.
It is an advanced medical imaging test used to see detailed images of soft tissues inside the body.

MRI is commonly used to examine:

• Brain

• Spine

• Joints (knee, shoulder)

• Abdomen & pelvis

• Muscles and nerves

MRI provides high-quality and detailed images, which helps doctors make an accurate diagnosis.

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How does MRI work?

An MRI machine uses:

• A strong magnetic field

• Radiofrequency (RF) waves

• A powerful computer system

In simple words:

• The magnet aligns hydrogen atoms in the body

• RF waves send and receive signals

• The computer converts these signals into images

👉 No X-rays are used in MRI.

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❓ Does MRI use radiation?

No ❌ MRI does NOT use radiation.

This is an important point:

• MRI does not use ionizing radiation like X-ray or CT scan

• It works only with magnetism and radio waves

• Therefore, MRI is considered a safe imaging modality

✔ Suitable for follow-up studies
✔ Safer option for children
✔ Can be done in pregnancy (only if advised by a doctor)

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Difference between MRI and CT Scan

MRI	CT Scan
No radiation	Uses radiation
Best for soft tissues	Best for bones & lungs
Longer scan time	Faster scan
Uses magnet	Uses X-rays

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Precautions before MRI

Before undergoing MRI, inform the technician if you have:

• Pacemaker

• Metal implants or surgical clips

• Cochlear implant

• Any metallic foreign body

Remove all metallic items such as:

• Jewelry

• Watch

• Mobile phone

• Belt, coins, keys

Patients with claustrophobia (fear of closed spaces) should inform staff in advance.

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Why is MRI done?

Doctors may advise MRI for:

• Brain stroke or tumor

• Spine problems and disc disease

• Joint injuries

• Tumor and infection detection

• Nerve-related conditions

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Conclusion

✔ MRI is a safe, painless, and advanced imaging test
✔ No radiation exposure in MRI
✔ Excellent for detailed soft-tissue evaluation

If you have any questions related to MRI or other imaging tests, feel free to comment.
Radiographic Gyan is always here to guide you.

Shoulder Joint Ligaments and Tendons in MRI: A Simple Guide, 🔹 What Are Tendons?, Why MRI Is Best for Shoulder Ligament & Tendon Evaluation

 

Shoulder Joint Ligaments and Tendons in MRI: A Simple Guide

The shoulder joint is one of the most complex and mobile joints in the human body. Because of its wide range of movement, it depends heavily on ligaments and tendons for strength and stability. MRI (Magnetic Resonance Imaging) is the best tool to visualize these soft tissues clearly.

In this post, let’s understand the ligaments and tendons seen in shoulder MRI and why MRI is so beneficial for diagnosing shoulder problems.

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🔹 What Are Ligaments?

Ligaments are strong, fibrous bands that connect bone to bone.
In the shoulder joint, they help maintain stability and prevent excessive movement.

Important Shoulder Ligaments Seen on MRI:

• Glenohumeral ligaments (Superior, Middle, Inferior)

• Coracohumeral ligament

• Coracoacromial ligament

• Coracoclavicular ligament

These ligaments keep the humeral head in place and prevent dislocation.

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🔹 What Are Tendons?

Tendons connect muscle to bone and help in shoulder movement.

Major Shoulder Tendons Visible on MRI:

• Rotator cuff tendons

  • Supraspinatus

  • Infraspinatus

  • Subscapularis

  • Teres minor

• Long head of biceps tendon

These tendons assist with arm lifting, rotation, and stabilization.

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🔹 Why MRI Is Best for Shoulder Ligament & Tendon Evaluation

MRI offers excellent soft-tissue detail without radiation. It can show even small tears or inflammation.

⭐ Benefits of MRI for Shoulder Joint:

1️⃣ Detects Tears Early

MRI can identify:

• Partial thickness tears

• Full-thickness tears

• Tendon degeneration

• Ligament sprains

Early detection prevents long-term complications.

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2️⃣ Shows Inflammation Clearly

Conditions like:

• Tendinosis

• Bursitis

• Tendonitis
  are easily visible on MRI.

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3️⃣ Helps in Diagnosing Rotator Cuff Injuries

Rotator cuff tears are one of the most common causes of shoulder pain.
MRI accurately shows the size, depth, and retraction of the tear.

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4️⃣ Guides Doctors for Treatment Planning

MRI helps orthopedics decide:

• Physiotherapy

• Injection therapy

• Arthroscopy

• Surgery

Better imaging → Better treatment.

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5️⃣ No Radiation Exposure

MRI uses magnetic fields, making it safer than CT or X-ray for soft-tissue evaluation.

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🔹 Common Shoulder Pathologies Seen on MRI

• Rotator cuff tear

• Tendinosis

• Biceps tendon tear

• Labral tear

• Ligament sprain

• Impingement syndrome

• Frozen shoulder changes

• Bursitis

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🩺 Conclusion

MRI is the most reliable and detailed imaging technique for evaluating shoulder ligaments and tendons.
It helps detect injuries early, plan proper treatment, and monitor recovery — making it essential for patients with shoulder pain or movement difficulty.