Unveiling the Magnet Inside the MRI: 5 Fascinating Facts You Probably Didn’t Know

Magnetic Resonance Imaging (MRI) is a crucial tool in modern medicine, offering detailed images of the body’s internal structures. At the heart of this powerful diagnostic machine is a magnet, an extraordinary component that makes the magic of MRI possible. Let’s dive into some fascinating facts about the magnet inside the MRI that will pique your interest and deepen your understanding of this remarkable technology.


Interested in becoming an MRI tech? Request information and find out more about the program.


1. The Strength of the Magnet

The magnet inside an MRI machine is incredibly powerful, typically ranging from 0.5 to 3.0 Tesla (T), although some advanced systems can go up to 7.0 Tesla or higher. To put this into perspective, a refrigerator magnet is around 0.001 Tesla. This immense strength allows the MRI to align the protons in the body, creating a detailed image of internal structures.

2. Superconducting Magnets

Most MRI machines use superconducting magnets, which are cooled to extremely low temperatures using liquid helium. These low temperatures, often near -269°C (-452°F), allow the magnets to conduct electricity without resistance, enabling them to generate a stable and powerful magnetic field necessary for high-quality imaging.

3. The Role of Electromagnets

The MRI magnet is essentially a large electromagnet, which means it generates a magnetic field when an electric current flows through it. The electromagnetism is what makes the MRI able to manipulate hydrogen protons in the body’s tissues, which is critical for creating precise images of organs and structures.

4. Magnetic Shielding

Due to the strong magnetic field, MRI machines are equipped with extensive magnetic shielding to prevent interference with nearby electronic devices and to protect people with metallic implants or devices. The shielding ensures that the magnetic field is contained within the MRI room, maintaining safety and functionality.

5. The Doughnut Shape

The familiar doughnut shape of the MRI scanner, known as the bore, houses the magnet. Patients lie on a table that slides into this bore. The design helps maintain the integrity of the magnetic field while allowing access for imaging different parts of the body. Innovations are continually improving the comfort and accessibility of MRI scans for patients.

The magnet inside the MRI is a marvel of modern technology, combining powerful electromagnetism, superconductivity, and advanced engineering to provide detailed and accurate medical images. Understanding the intricacies of the MRI magnet can enhance your appreciation of this essential diagnostic tool and inspire a deeper interest in the field of medical imaging. Whether you’re considering a career in allied health or simply fascinated by medical technology, the MRI magnet is a testament to the incredible advancements in healthcare.

#MRItechnology, #MedicalImaging, #HealthcareScience

Find Out More

Curious about how you can contribute to healthcare through this career that blends technology and human connection? Explore our AAS in Magnetic Resonance Imaging (MRI) Technology and see how you can become a part of this impactful profession, or click here to Request Information.


About the Author:
Katherine R. Lieber, Director of Enrollment Technology at Midwestern Career College, is a technology and digital strategy leader who has driven student engagement and content innovation across industries. Her expertise in enrollment technology, marketing, and data-driven storytelling ensures that prospective students connect with the right career insights.
Katherine Lieber

Recent Posts

Brain Meets Technology: What Makes EEG Electrodes Tick?

Brain Meets Technology: What Makes EEG Electrodes Tick? EEG technology can look like wires and…

2 weeks ago

Precision Under Pressure: Infection Control Practices in Dentistry

Precision Under Pressure: Infection Control Practices in Dentistry Behind every dental procedure is a network…

2 weeks ago

From Veins to Valves: The Anatomy Every Cardiovascular Sonographer Must Know

From Veins to Valves: The Anatomy Every Cardiovascular Sonographer Must Know Cardiovascular sonographers don’t just…

3 weeks ago

Inside the MRI: Why It Takes So Long—and What’s Actually Happening

Inside the MRI: Why It Takes So Long—and What’s Actually Happening Ever wondered why MRI…

3 weeks ago

Understanding Patient Care in Sonography: The Human Side of Imaging

Understanding Patient Care in Sonography: The Human Side of Imaging Sonographers do more than scan…

3 weeks ago

Safety First: Understanding Radiation Protection in Radiography

Safety First: Understanding Radiation Protection in Radiography Radiologic technologists play a critical role in patient…

3 weeks ago