If a doctor suspects there is something wrong with your heart, or if they want to take a closer look at how your heart is working, you may also be asked to have a Cardiac MRI scan. Some people may be a little scared when they hear the name, "Oh, what is this, what do you mean by putting it in this big machine?" But it's actually not that scary. So, what exactly is this, how is it done, how do we prepare for it, and we'll talk about all of this today, okay?
What is Cardiac MRI?
Simply put, a cardiac MRI is a test that takes detailed pictures of your heart . It uses powerful magnets and radio waves. The best part is that it takes these pictures without sending anything into your body, so you don't even feel it. Think of it like an X-ray of your heart, but with much clearer, more detailed pictures.
This test allows you to see the parts of your heart, such as the chambers, valves, and heart muscles, very clearly. It also shows how well these parts are working and how your blood is moving through your heart. These images can be taken in two-dimensional (2D) or three-dimensional (3D), which can help your doctor find out exactly what is wrong with your heart, which means making an accurate diagnosis .
When is a Cardiac MRI needed?
A doctor may recommend this test to gain a complete understanding of the structure and function of your heart. For example, a cardiac MRI may be ordered in the following situations:
- If you have symptoms like chest pain, shortness of breath, or fainting , find the cause.
- Some people may have heart diseases that are present from birth, such as congenital heart disease , heart failure , heart masses, valve disease, and irritation of the membrane around the heart (pericardium).
- Check for problems such as muscle damage, heart infection, protein buildup, iron deposits, or inflammation.
- Find areas of reduced blood flow due to damage to the heart after a heart attack or heart artery blockages.
- Before doing things like ablation treatment for some heart rhythm problems, you need to find the exact location where you want to treat it.
- If you are already taking any heart treatment, see how much it has improved your heart.
- Plan your heart surgery (procedure) or treatment before it is performed.
- Evaluate the success of a recent surgery.
- See how your heart condition has changed since a previous scan.
How does this test work?
Unlike some other heart imaging methods, Cardiac MRI does not use any radiation . This is one of its biggest advantages. It uses a strong magnetic field and radio waves to detect changes in the molecules in your body. Then, a computer uses that information to create very clear, high-quality images of your heart.
Sometimes, your doctor may give you a special liquid (contrast dye) through an IV in a vein in your arm. This is called contrast dye . This makes areas of the heart that are having problems show up more clearly on the pictures.
Cardiac MRI is very accurate . It provides detailed images of the heart from different angles. Cardiac MRI can help diagnose some diseases better than other imaging methods, such as a CT scan. For example, it can provide a better picture of the severity of valve disease or damaged tissue.
A cardiac MRI scan usually takes about 30 minutes to an hour and a half . The doctor may do several scans, each lasting a few minutes. You will be asked to hold your breath for a short while during the scan. The main difference between a regular MRI and a cardiac MRI is the breath-holding. Because the heart is a moving organ, holding your breath is the only way to get a clear picture.
How do we prepare for a cardiac MRI?
Before you have this test, your doctor will ask you about any allergies , other health problems, and previous surgeries. In particular, if your kidneys don't work well , your doctor may not want to give you the contrast dye. This is because your kidneys need to be working properly to remove the dye from your body.
If you are claustrophobic , tell your doctor a few days before your MRI. Your doctor may give you a sedative , which is a medicine that will calm you down. You can usually get one from a pharmacy and take it about half an hour before your MRI. But remember, if you take a sedative, you will need someone to take you there and back, because you will not be able to drive.
What should we not do before an MRI?
The following things should be taken into account on the day of the cardiac MRI:
- Do not wear any jewelry, as the strong magnets in the machine can damage jewelry and cause problems with the images.
- Don't forget to remove all metal objects such as earrings, piercings, glasses, hearing aids, and hair barrettes . You will be provided with a locker to store your clothes and jewelry.
- Unless your doctor advises otherwise, do not stop taking your usual medications or skip meals.
- Do not wear anything with metal parts. For example, a zipper on jeans or metal in a bra. You can wear underwear and socks, but you will probably need to wear a hospital gown.
- Don't take anything valuable with you. Only take what you absolutely need.
- Go to the bathroom before going into the MRI machine (empty your bladder) . Since you will be lying still for a while, it is easier if you do that.
What happens when you go for an MRI?
When you go into the MRI room, you see that the machine looks like a big donut turned on its side. There are some MRI machines (open MRI) that don't create a complete circle around you. If you have trouble getting into tight spaces, this type of machine might be a little easier.
What happens during an MRI scan?
What happens during a cardiac MRI scan can vary slightly depending on your health condition and the reason for the scan, but in general, here's what happens:
- If you are having an MRI with contrast dye, your doctor may give you a contrast agent, such as gadolinium . This helps some details in the scan images show up more clearly. This is given through an IV in a vein in your arm.
- To collect information about your heartbeats and breathing, the doctor may place stickers called EKG leads on your chest and tie a belt under your chest.
- You will be made to lie down on a long table-like platform, which will then be moved into the empty space in the middle of the MRI machine.
- After you are prepared for the scan, the technician will go into a room behind a glass screen. He or she will be able to see you. You will be able to talk to him or her through a microphone and headphones, or through an intercom. You may be given a call button so that you can call them if you have any concerns.
- You can listen to music through headphones or use earplugs to reduce the noise coming from the machine.
- During the scan, you will need to lie still and lie on your back, as the machine rotates around you. This will make a loud noise , like the sound of an electronic video game, or you may hear a clicking sound. It may be difficult to stay still, but it is very important . If you move, the images will be blurry.
What happens after the MRI?
When the test is over, the doctor will remove you from the MRI machine on the table you were lying on. If you had an IV, it will be removed. You can then pack your things, put your clothes back on, and go home. Drinking plenty of water after the test will help the contrast dye leave your body more quickly.
Are there any risks or side effects to this?
A cardiac MRI usually won't harm you. But your doctor will ask you if you're pregnant or have any metal inside your body . In some cases, an MRI may not be right for you.
Some medical devices may not work properly in an MRI machine or may interfere with the machine. Be prepared to tell your doctor what kind of devices you have in your body. Some devices, such as stainless steel intrauterine devices (IUDs) or some older pacemakers, may not be safe in an MRI machine. Your doctor can check their database to see which devices are safe and compatible for an MRI.
There are risks associated with having metal objects inside your body during an MRI. If these metal objects move inside your body due to the strong magnetic field in the machine, you could be injured. Also, this metal can heat up. That's why it's important to be specific about this.
If you took a sedative to calm you down, you may feel a little tired or sleepy until the effects of the medication wear off. Otherwise, you can resume your normal activities.
If you have contrast dye given through an IV, you may experience a metal-type taste in your mouth for a short time. There may be some bruising or irritation where the IV was inserted. Very rarely, some people may experience nausea, headache, or an allergic reaction to the contrast.
How are the results obtained, and what do they tell us?
The doctor who interprets the images (often a radiologist or cardiologist) will look at your scan pictures carefully. Then, they will send the pictures and the report to the doctor who recommended you for the cardiac MRI. At your next appointment, the doctor will show you the pictures and explain your diagnosis.
It may take two to three days for you to receive results.
If your Cardiac MRI scan results are abnormal, your doctor may prescribe medication or talk to you about a procedure or surgery. Because this test can examine many different aspects of your heart, the next steps will vary for each person depending on their problem.
When do you need to talk to the doctor?
If you experience symptoms of a heart problem , call your doctor immediately.
If you've had a cardiac MRI and haven't heard back from your doctor about the results even after a few days, it's a good idea to remind them about it.
Stepping into a large scanner can be a little scary. But it's an important step in gathering information to improve your heart health. A doctor may recommend a cardiac MRI to get a complete, accurate picture of your heart without surgery. Even though the person operating the cardiac MRI is behind a glass wall, they can see you and talk to you. So don't be afraid to talk to them if you have any questions or concerns.
Finally, remember this.
So, Cardiac MRI is a non-radioactive, safe test that helps detect heart problems and understand how the heart is working. Although it takes a while and involves being inside a large machine, the information it provides is invaluable in keeping your heart healthy.
The most important thing is to talk openly with your doctor if you have any questions about the test or the results. Don't be afraid to clear up any doubts you may have. This will give you the confidence to undergo the test and then proceed with treatment.
Wishing you and your heart good health!
` Cardiac MRI, heart MRI, heart scan, heart test, heart diagnosis, MRI machine, contrast dye
💬 අදහස් (0)
තවමත් කිසිදු අදහසක් පළ කර නොමැත. ඔබේ අදහස පළමු වරට මෙහි එක් කරන්න.
ඔබේ අදහස එක් කරන්න