A magnetic resonance imaging (MRI) scan is a common procedure around the world.
MRI scan at a MRI Scan Centre is conducted by using a strong filed radio or magnetic waves that help in obtaining the detailed images of the organs within the body.
Since the time it was first introduced to the world of diagnostics, many doctors and researchers have termed MRI as "revolutionary".
What is MRI of the Body?
In simple terms MRI stands for Magnetic resonance imaging. It is a noninvasive (meaning there is no need to make an incision whatsoever) form of medical test used by the physicians to diagnose medical conditions.
This test uses a powerful magnetic field, radio frequency pulses. The final result of the test is recorded in a computer wherein the detailed pictures of organs, bones, tissues and virtually every internal body structure is made visible in this test. The biggest advantage is that the mri test labs in delhidoes not use ionizing radiation (x-rays).
The presence of certain disease in various parts of the body is also found out in the MR images. The mri scan labs in delhi ncr have the facility to transmit the images from the computer and have them printed or copied in a CD so they can be sent to the doctors for evaluation and plan the further treatment.
What are Some Common Uses of the Procedure?
MR imaging of the body is performed to evaluate:
· The most vital organs like hearts, liver, kidney etc. can be monitored with the help of MRI scan.
· MRI scan is also helpful to detect the diseases of the pelvic organs as well as the reproductive organs such as the uterus and ovaries in females and the prostate gland in males.
· Blood vessels (including MR Angiography).
· Lymph nodes.
· Physicians use an MR examination to help diagnose or monitor treatment for conditions such as:
· Tumors of the chest, abdomen or pelvis.
· Diseases of the liver, such as cirrhosis, and abnormalities of the bile ducts and pancreas.
· Inflammatory bowel disease such as Crohn's disease and ulcerative colitis.
· It is also recommended for congenital heart disease.
· Malformations of the blood vessels and inflammation of the vessels (vasculitis).
· A fetus in the womb of a pregnant woman.
What Does the Equipment Look Like?
The traditional MRI unit in the MRI Scan Centre looks pretty much the same as a cylinder-shaped tube surrounded by a circular magnet. The patient is made to lie down on a moveable examination table that slides into the center of the magnet that emits the magnetic waves.
There are some MRI units that are known as short-bore system. These are designed in a way that the magnets do not surround the person in entirety. Some newer MRI machines come with a larger diameter which can more comfortable for patients of larger physical frame or those who are claustrophobic. The other MRI machines are open to the sides i.e. open MRI. As a result, the newer open MRI units are capable of high quality images for various types of exams. The same cannot be said for the old MRI units since they use backdated technology. Moreover, the open MRI cannot be considered fit for certain types of examinations. It is therefore advised to consult your mri scan labs in delhi ncr.
The computer workstation that does all the post processing of the images is located separately at a safe distance from the scanner.
An MRI scan requires very little preparation prior to the scan.
Once you arrive at the MRI lab for a full body mri scan cost in delhi, the doctors would suggest to change into a gown or other free flowing cloth. Since this test is completely reliant on the magnetic fields, it is critical that the person undergoing the test shows up without wearing any metal object. In doing so, the doctor would ask to remove any object that interferes with the machine.
Some of the cases make it difficult to have an MRI for a person. These can be for the presence of the metal inside their body such as such as bullets, shrapnel, or other metallic foreign bodies. The medical devices like cochlear implants, aneursym clips, and pacemakers can also hinder the MRI scans.
Individuals who are anxious or nervous about enclosed spaces should tell their doctor. They shall be given medication prior to the MRI procedure to make the process comfortable.
Moreover, the MRI patients might be given an injection of intravenous (IV) contrast liquid. This may be done to improve the visibility of a particular tissue that is relevant to the scan.
The radiologist, a doctor who specializes in medical images, will then talk the individual through the MRI scanning process and answer any questions they may have about the procedure.
During an MRI Scan
Once the patient is placed into the scanner, the MRI technician ensures that the person is comfortable with the help of an intercom. The process is not commenced until the patient is ready.
It is vital to stay till throughout the scan as any movement can disrupt the images. Another thing to be noticed is that the scanner would produce loud clanging noise albeit it is not something to be scared of. Certain images require the person to hold their breath at times. Nevertheless, if the patient is too uncomfortable to go through the test, they can speak to the technician and request the scan to be stopped.
After an MRI Scan
Post MRI scan, the radiologist and the team of technicians would examine the images and see if there is a need to go for another scan. If not then the patient can go home.
Next the radiologist will prepare a report for the requesting doctor. Hence the patients are told to schedule an appointment with the doctor discussing the results.
Rarely do patients feel or experience any kind of pain or niggle from an MRI scan.
That said, some people may complain of nausea, headache. The allergy due to the contrast material is rare but its possibility is not ruled out. It can cause hives or itchy eyes. Therefore one must notify the technician to avoid any adverse reaction.
Those who suffer from claustrophobia are the ones who feel discomfort during an MRI scan.
An MRI scanner contains two powerful magnets. These are the most important parts of the equipment.
The human body is largely made of water molecules, which are comprised of hydrogen and oxygen atoms. At the center of each atom lies an even smaller particle called a proton, which serves as a magnet and is sensitive to any magnetic field
Normally, the water molecules in the body are randomly arranged, but on entering an MRI scanner, the first magnet causes the water molecules to align in one direction, either north or south.
The second magnetic field is then turned on and off in a series of quick pulses, causing each hydrogen atom to change its alignment when switched on and then quickly switch back to its original relaxed state when switched off.
Passing electricity through gradient coils, which also cause the coils to vibrate, creates the magnetic field, causing a knocking sound inside the scanner.
Although the patient cannot feel these changes, the scanner can detect them and, in conjunction with a computer, can create a detailed cross-sectional image for the radiologist.
Functional Magnetic Resonance Imaging fMRI
Functional magnetic resonance imaging or functional MRI (fMRI) uses MRI technology to measure cognitive activity by monitoring blood flow to certain areas of the brain.
The blood flow increases in areas where neurons are active. This gives an insight into the activity of neurons in the brain.
This technique has revolutionized brain mapping, by allowing researchers to assess the brain and spinal cord without the need for invasive procedures or drug injections.
Functional MRI helps researchers learn about the function of a normal, diseased, or injured brain.
fMRI is also used in clinical practice. Standard MRI scans are useful for detecting anomalies in tissue structure. However, an fMRI scan can help detect anomalies in activity.
In short, fMRI tests what tissues do rather than how they look.
As such, doctors use fMRI to assess the risks of brain surgery by identifying the regions of the brain involved in critical functions, such as speaking, movement, sensing, or planning.
Functional MRI can also be used to determine the effects of tumors, stroke, head and brain injuries, or neurodegenerative diseases, such as Alzheimer's.
How Stay Calm During MRI Scan?
Claustrophobia is a fear of being confined to a small space. Some people might be okay in a small room but terrified of being trapped in an elevator; others with claustrophobia might be fine in the elevator but terrified of being in a tight box. But general estimates put the numbers around five to ten perfect of the population, though. While for the most part claustrophobia won’t impact your day-to-day life, there are certain circumstances where it can become an issue. One of the most common scenarios where claustrophobia becomes a problem is when you need an MRI. MRI machines are notorious for making people feel uncomfortable; even someone who never felt claustrophobic before may do so once they are inside the machine. However, the information that this machine can provide to your doctor can be vital for diagnosing health concerns such as tumors, inflammation in the bowels, or even cirrhosis of the liver. So getting through the process, claustrophobic or not, is a must.
Thankfully, there are a number of things that you can do to make the process of getting an MRI easier on yourself so you can overcome your fears and get the imaging that you need. We’ve been working with patients in the Tulsa area for decades; during that time, we’ve discovered a lot of helpful tips that you might find useful if you are feeling apprehensive about your scan.
Answering the Most Frequently Asked Questions
How Long Will an MRI Scan Take?
MRI scans' time duration ranges between 20 and 60 minutes. The part of the body which is required to be analyzed and how many images are required would also affect the time taken. If, after the first MRI scan, the images are not clear enough for the radiologist, they may ask the patient to undergo a second scan straight away.
I Have Braces or Filings, Should I Still Undergo the Scan?
Although braces and fillings are unaffected by the scan, they may distort certain images. The doctor and technician will discuss this beforehand. The MRI scan may take longer if additional images are required.
I am Claustrophobic, What Can I Do?
The doctor and radiologist will be able to talk the patient through the whole procedure and address any anxieties. Open MRI scanners are available in some locations for certain body parts to help patients who have claustrophobia.
A person can take medication prior to the test to ease anxiety.
Do I Need an Injection of Contrast Before my MRI Scan?
A contrast dye can improve diagnostic accuracy by highlighting certain tissues.
Some patients may need to have a contrast agent injected before the scan.
Can I Have an MRI scan if I am Pregnant?
Unfortunately, there is no simple answer. Let a doctor know about the pregnancy before the scan. There have been relatively few studies on the effect of MRI scans on pregnancy.
Typically, doctors do not recommend contrast material for women who are pregnant.
MRI scans should be restricted during the first trimester unless the information is considered essential. MRI scans during the second and third trimester are safe at 3.0 tesla (T) or less. The tesla is a measurement of magnetic strength.
Cost of MRI scan
MRI scan is a large scale process of scanning and it has the capability to generate images of high quality for almost the entire body. The MRI Scan Cost ranges between INR 4800 and INR 7200.