A 61 -year -old man died at an MRI center in Long Island, USA. According to the police report, the person had a heavy steel chain around his neck, which was pulled due to excessive magnetic pressure of the system and suffered serious injuries. He died the next day.
This incident is not only enough to explain the strength of MRI, but also suggests how important security checks, guidelines and awareness are.
So let’s talk in important information why there is a danger in MRI? Also, we can also know –
What precautions should be taken in MRI Center?
Expert: Dr. Sharad Maheshwari, Consultant Radiologist, Kokilaben Dhirubhai Ambani Hospital, Mumbai
Question – 1: What is MRI and why is there a danger?
Answer- MRI (magnetic resonance imaging) is a unique scanning system, which takes clear pictures of the body’s internal organs. Neither surgery is performed nor dangerous radiation is used in it. The MRI system consists of a fully effective magnet. This system helps in detecting internal injuries, nerves infections or tumors.
Question-2: How strong is magnetic force in MRI?
Answer- The MRI system has an extremely effective magnetic field, which is measured in a unit called Tesla. MRI machines commonly used in hospitals range from 0.5 Tesla to 3.0 Tesla, ie about 5,000 to 30,000 gauss forces. In comparison, the Earth’s magnetic field is only 0.5 gales, that is, the magnetic force of the MRI system is several times more than the Earth’s magnetic force.
Question- 3: How risky it is to keep metal items near the MRI system?
Answer- Due to excessive magnetic force, the system can suddenly pull any metal object (such as chain, key, hairpin), which can cause severe injuries or threaten life. Therefore, before entering the MRI chamber, the patient and staff are thoroughly protected, so that no metal goes inside.
Question- 4: What should be kept in mind before getting MRI checked?
Answer- Many common things that we wear or use in everyday life can create a serious risk in the MRI room. In such a situation, it is important to know which things should be avoided.
Question-5: Is it safe to get MRI done if there is a steel implant or pacemaker in the body?
Answer- If there is a steel implant (such as joint replacement, screw, plate) or pacemaker in the body, it is necessary to give complete information about it to the doctor before MRI. Not every metal is MRI-safe (MRI). The magnetic field of MRI may have a serious impact on pacemaker or some other electronic implants, which can be fatal. In such cases, doctors may also recommend any other alternative test instead of MRI.
Question-6: What is the screening of the patient and the person accompanying him?
Answer- The patient and anyone who come with him are examined before getting MRI done. First, a form is filled in which there is no metal in their body. Then a metal detector or in a normal way is tested to ensure that there is no metal in their body. Usually, the person who comes with is not allowed to go to the MRI room, unless it is very important.
Question-7: What kind of precautions should the hospitals take in relation to the MRI room?
Answer: Hospitals will have to adopt clear and strict protocols for the protection of the MRI room.
Question-8: What are government or medical guidelines related to MRI?
Answer: In India, institutions like the Indian Radiological and Imaging Association (IRIA), Nuclear Energy Regulatory Board (AERB) and National Hospital and Health Services Provider Accreditation Board (NABH) issues guidelines for security and operation related to MRIs. Hospitals are required to follow some important security rules for MRI. As-
- The MRI chamber is divided into four zones (Zone 1 to Zone 4) to maintain security.
- Each patient is asked to fill a safety form before MRI, in which information is obtained about their medical records and metal transplants.
- The MRI unit should only have non-combustible stretcher and oxygen cylinders.
- Each MRI center must have a security officer or trained employee.
- An emergency protocol should be applied to any emergency.
Question-9: What to do when there is panic or clostrophobia (fear of closed space) during MRI?
Answer- The MRI system is like a tunnel, in which the patient has to lie down for some time. During this time, some people may also have nervous attacks, shortness of breath or clostrophobia. Such patients should inform the doctor before testing. Light unconsciousness can be given if needed or an option of open MRI can be adopted, in which the system is not like a tunnel.
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