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how does angiography work

by Dr. Martina Schamberger Published 3 years ago Updated 2 years ago
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Angiography exams produce pictures of major blood vessels throughout the body. In some cases, contrast material is used. CT angiography uses a CT scanner to produce detailed images of both blood vessels and tissues in various parts of the body. During the exam, contrast material is injected through a small catheter placed in a vein of the arm.

In a coronary angiogram, a catheter is inserted into an artery in the groin, arm or neck and threaded through the blood vessels to the heart. A coronary angiogram can show blocked or narrowed blood vessels in the heart. A coronary angiogram is a procedure that uses X-ray imaging to see your heart's blood vessels.Dec 14, 2021

Full Answer

What is an angiogram and how is it performed?

What is the Procedure & How Long Does It Take to Do an Angiogram?

  • After the patient has changed into a surgical gown, he/she will be asked to lie down on the table present in the angiography suite.
  • Mild sedative is given to the patient to help him relax as the angiogram test continues.
  • Local anesthesia is given to the patient either on the groin or wrist to numb the area.

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How long does it take to do an angiogram?

Your doctor may use a local or general anesthetic to perform an angiogram The procedure takes between 30 minutes and two hours. You may be able to return home soon after the procedure, as long as no blockages are detected. The procedure is safe and usually painless, but you might have some bruising around the area where the catheter was inserted.

What are the risks of an angiogram?

The risks of angiogram are very small. Risks may include bruising, internal bleeding, hematoma or damage to the artery at the catheter insertion site and a small risk of stroke. Allergic reaction to the contrast dye may cause a rash, swelling, difficulty breathing or heart problems. All efforts are made to ensure these risks are minimal.

Do I really need an angiogram?

Your doctor may recommend that you have a coronary angiogram if you have: Symptoms of coronary artery disease, such as chest pain (angina) Pain in your chest, jaw, neck or arm that can't be explained by other tests New or increasing chest pain (unstable angina) A heart defect you were born with (congenital heart disease)

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How angiography is performed?

a very thin flexible tube (catheter) is inserted into the artery. the catheter is carefully guided to the area that's being examined (such as the heart) a dye (contrast medium) is injected into the catheter. a series of X-rays are taken as the dye flows through your blood vessels.

How much time does angiography take?

Angiography is done in a hospital X-ray or radiology department. It usually takes between 30 minutes and 2 hours, and you can usually go home the same day.

Is an angiogram painful?

Will an angiogram hurt? Neither test should hurt. For the conventional angiogram you'll have some local anaesthetic injected in your wrist through a tiny needle, and once it's numb a small incision will be made, in order to insert the catheter.

Can angiography clear blockage?

Narrowed coronary arteries may possibly be treated during the angiogram by a technique known as angioplasty. A special catheter is threaded through the blood vessels and into the coronary arteries to remove the blockage. Another surgical option for severely narrowed coronary arteries is a bypass operation.

What are the side effects of angiography?

Potential risks and complications include:Heart attack.Stroke.Injury to the catheterized artery.Irregular heart rhythms (arrhythmias)Allergic reactions to the dye or medications used during the procedure.Kidney damage.Excessive bleeding.Infection.

Which is better CT scan or angiogram?

It was found that CT angiogram identified 85% of patients with significant stenoses and 90% of patients with CAD accurately. The authors concluded that while CT angiography was not ready to replace conventional angiograms entirely, the more modern procedure was nearly as accurate as the traditional angiogram.

Is there any risk in angiography?

Most people who have angiography do not have complications, but there's a small chance of minor or more serious complications. Possible minor complications include: an infection where the cut was made, causing the area to become red, hot, swollen and painful – this may need to be treated with antibiotics.

Can you walk after an angiogram?

Do not do strenuous exercise and do not lift, pull, or push anything heavy until your doctor says it is okay. This may be for several days. You can walk around the house and do light activity, such as cooking. If the catheter was placed in your groin, try not to walk up stairs for the first couple of days.

Are you asleep during an angiogram?

During the angiogram, you are awake, but are given medications to help you relax. A thin tube (catheter) is placed in the femoral artery (groin area) through a small nick in the skin about the size of the tip of a pencil. The catheter is guided to the area to be studied.

Can you stent a 100% blocked artery?

“Patients typically develop symptoms when an artery becomes narrowed by a blockage of 70 percent or more,” says Menees. “Most times, these can be treated relatively easily with stents. However, with a CTO, the artery is 100 percent blocked and so placing a stent can be quite challenging.”

How many blockages can a heart have?

There are three types of heart block.

At what percent blockage requires a stent?

“For a cardiac stent procedure to qualify as a medical necessity, it is generally accepted that a patient must have at least 70% blockage of an artery and symptoms of blockage,” Justice Department attorneys wrote.

How long do you stay in the hospital after an angiogram?

The angiogram usually takes under an hour, but you'll stay in hospital for up to 6 hours, while your healthcare team monitors your blood pressure, heartrate and breathing, as well as the site where the tube was inserted.

Is there any risk in angiography?

Most people who have angiography do not have complications, but there's a small chance of minor or more serious complications. Possible minor complications include: an infection where the cut was made, causing the area to become red, hot, swollen and painful – this may need to be treated with antibiotics.

Can you walk after an angiogram?

You should be able to sit up straight away and may be able to walk around soon afterwards if the catheter was inserted into your arm. But if the catheter was inserted into your groin, you'll be asked to lie flat after any bleeding has stopped.

Is empty stomach needed for angiography?

Preparing for a coronary angiography Don't eat or drink anything for eight hours before the angiography. Arrange for someone to give you a ride home. You should also have someone stay with you the night after your test because you may feel dizzy or light-headed for the first 24 hours after the cardiac angiography.

Why do you need an angiography?

On occasion, it may be necessary for you to spend the night in the hospital. Angiography allows your physician to view how blood circulates within vessels at specific locations in the body. This diagnostic test is used to locate the specific source of an abnormality in the neck, kidneys, legs, or other sites.

How is a catheter threaded?

The catheter is slowly and carefully threaded through the artery until its tip reaches the segment of vessel to be examined by angiography.

How long do you have to wait to take glucophage before a blood test?

Please notify the radiology nurse upon arrival that you are diabetic. Do NOT take Glucophage® (metformin hydrochloride) for 48 hours before the test or 48 hours after the test to reduce the risk of kidney complications.

How long does it take to get angiogram results?

It may be several hours before the laboratory results are available.

What is an angiogram?

An angiogram is a procedure that uses X-ray contrast to look at the blood vessels (arteries or veins) in your body. Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cleveland Clinic products or services. Policy.

What happens when blood vessels are blocked?

When blood vessels are blocked, damaged or abnormal in any way, chest pain, heart attack, stroke, or other problems may occur. Angiography helps your physician determine the source of the problem and the extent of damage to the blood vessel segments that are being examined.

How long before a blood test can you take dipyridamole?

Do NOT take dipyridamole (Persantine®) or warfarin (Coumadin®) within 72 hours before the test, and 24 hours after the test. These medications are often referred to as blood-thinning pills. Do not take Plavix® for 5 (five) days prior to the procedure.

Will the Angiogram Be Painful?

Some patients find angiograms to be uncomfortable, but few describe either procedure as actually painful. For most patients, the hardest part is remaining still throughout the procedure. The dye may initially deliver a burning feeling as it makes its way into the arm and to the chest. And patients who have a catheter and wires inserted in the groin area might feel a little sore afterwards. They are usually asked to remain flat on their backs for a few hours to prevent bleeding. Patients may also notice bruising in their arms from the IV. Some people get claustrophobic inside CT scan tubes, so physicians might prescribe a medication to help them relax. Very often, patients wear headphones so technicians can speak to them to provide reassurance. Many hospital radiology departments also offer music to patients inside the tube! Angiograms are certainly far less traumatic than more invasive surgeries. While there is a risk for any medical procedure, they are pretty rare in an angioplasty. Because it involves radiation, physicians usually won’t recommend it for pregnant women. But angiograms deliver some of the most accurate diagnostics we doctors have, and allow us to share results with patients and families almost instantly. Palm Vascular provides angioplasty and atherectomy services, which are often recommended as a follow-up to angiograms. Contact us if you have questions!

Why do you need an angiogram for chest pain?

Conventional angiograms are more often used for patients who show a high risk for heart disease and have one or more of these symptoms: Unexplained pain in the chest, jaw, arm, or neck; other tests are often performed to rule out injury, temporomandibular joint disorder (TMJ), Lyme disease, etc. Increased chest pain.

What is an angiogram?

An angiogram is a radiological procedure. There are actually two types of angiograms. Both use advanced x-ray technology to deliver images of arteries to a monitor. Computed tomography angiography (CTA) is noninvasive, meaning that there are no incisions made on the body.

Why do you have to be strapped on a bed for an x-ray?

The patient may be strapped on a bed if the procedure requires them to be tilted for x-ray machines to get a better view. Patients might be given nitroglycerin to dilate or widen, the arteries, or a beta blocker to slow the heart rate. A coronary angiogram requires more preparation because it is invasive.

Does dye burn your arm?

The dye may initially deliver a burning feeling as it makes its way into the arm and to the chest. And patients who have a catheter and wires inserted in the groin area might feel a little sore afterwards. They are usually asked to remain flat on their backs for a few hours to prevent bleeding.

Is it Painful to Have an Angiogram?

Thus, the needle prick is the only pain the patient might feel during the whole process. Apart from this, an angiogram is typically painless. Although the angiogram catheter is guided through the arteries to the area to be examined, the patient does not feel it as there are no nerves in the arteries.

How does iodine dye work?

A small amount of iodine dye is injected into the catheter which travels through the blood vessels. The dye becomes visible under x-ray camera and shows the blood flow through the blood vessels and records the location of blockages if any. The angiogram can also record the size and shape of the blockages.

What is an angiogram?

An angiogram is performed to detect blockages in the blood vessels that obstruct the blood supply to different body parts. To perform this angiogram a small flexible tube called catheter is inserted into a blood vessel in the patient’s arm or thigh or even groin under local anesthesia. A small amount of iodine dye is injected into ...

How long does it take to get angiograms done?

The whole angiogram procedure can take between 30 minutes to 2 hours depending on the area to be examined and the patient’s general health.

How long after angiogram can you exercise?

There are no restrictions on the patient’s level of activity after 24 hours of the angiogram test unless stated otherwise.

What is IV line?

As the procedure begins an intravenous line ( IV) is inserted in the vein of the patient’s arm. This is done so that the doctor can give any other medications or fluid if needed. The patient’s heartbeat, breathing, oxygen level, blood pressure and all other important functions are monitored during the angiogram test.

Where is local anesthesia given for angiogram?

After the patient is relaxed, local anesthesia is given in the groin or upper leg, in the arm or wrist.

Why is it done?

An angiogram is often needed to decide what treatment is necessary for your heart failure.

Where is the catheter inserted?

A fine, flexible, hollow tube ( catheter) is inserted into a blood ves sel in your groin or arm. The tip of the tube is positioned either in the heart or at the entry of the arteries supplying the heart before a special dye is injected, visible by X-ray. The pictures obtained are known as angiograms.

Why do doctors use angiograms?

Doctors use angiograms to examine blood vessels. Angiogram results can help doctors diagnose and treat blood vessel problems and cardiovascular diseases. During the procedure, a doctor gently guides a catheter through an artery until it reaches the area of the body under investigation. Once the catheter reaches the correct location in the body, ...

What are the conditions that angiograms can diagnose?

They use angiogram results to diagnose the following conditions: aneurysms, or bulges that develop in weakened artery walls. atherosclerosis, which occurs when plaques and fa tty material collect on the inner walls of the arteries. pulmonary embolisms, or blood clots.

What is an angiogram used for?

A doctor can use an angiogram to examine blood vessels across the body, including in the:

What is the blood vessel abnormality on an angiogram?

The term “angiogram” refers to a number of diagnostic tests that doctors can use to identify blocked or narrow blood vessels. Angiograms also help doctors diagnose a range of cardiovascular diseases, including coronary atherosclerosis, vascular stenosis, and aneurysms.

How long does it take for a doctor to remove a catheter?

After taking the X-ray images, the doctor will remove the catheter and apply steady pressure on the area for about 15 minutes. This ensures that there is no internal bleeding.

What is the best way to relax before a blood test?

Before the test, a doctor will administer a mild sedative, which will help the person relax. It will not induce unconsciousness.

What do nurses do after a patient signs in?

current medical insurance information. After the person signs in, a nurse will lead them to a private room where they can change into a hospital gown. The nurse will then insert an intravenous line into a small vein on the person’s hand or wrist.

When to Expect the Angiogram Report?

The angiogram report is usually made on the day of the test itself. The report is either handed over to the patient or at times, is sent to the primary doctor directly. The primary doctor then discusses the result of the angiogram report with the patient and his family on the next follow-up date.

What to Expect after an Angiogram?

Although angiogram is a one-day test , the patient might be asked to stay overnight in the hospital for observation.

How does iodine dye work?

Iodine dye is injected through the catheter which travels through the artery. The patient may feel hot flushes when this is done. This feeling lasts just for few seconds. A series of X-rays are taken as the dye flows through the blood vessels. The patient may be asked to stay still for clear pictures to come out.

What is an angiogram?

An angiogram is a medical technique used to examine the inside of blood vessels and organs of the patient’s body to detect any blockages present in the arteries that curb the blood supply to various organs. Primarily, the process of an angiogram includes injecting an iodine dye commonly called the contrast medium into the blood vessel ...

What is the procedure for angiogram?

Primarily, the process of an angiogram includes injecting an iodine dye commonly called the contrast medium into the blood vessel and viewing it under X-rays. After the patient has changed into a surgical gown, he/she will be asked to lie down on the table present in the angiography suite.

How long does it take for an angiogram to come out?

At times, the patient may be asked to take a deep breath and hold it during the X-rays. The angiogram test in total takes about 30 minutes to one hour. At times it might take a little longer if the test is combined with other catheterization procedures.

How long after angiogram should you not lift?

Lifting of heavy objects should be avoided for at least 24 hours after the angiogram test.

What does it mean when you have an angiogram?

Your doctor may recommend that you have a coronary angiogram if you have: Symptoms of coronary artery disease, such as chest pain (angina) Pain in your chest, jaw, neck or arm that can't be explained by other tests. New or increasing chest pain (unstable angina)

Where is an angiogram performed?

Angiograms are performed in the catheterization (cath) lab of a hospital. Your health care team will give you specific instructions and talk to you about any medications you take. General guidelines include:

What is the most common type of cardiac catheterization procedure?

Cardiac catheterization procedures can both diagnose and treat heart and blood vessel conditions. A coronary angiogram, which can help diagnose heart conditions, is the most common type of cardiac catheterization procedure. During a coronary angiogram, a type of dye that's visible by an X-ray machine is injected into the blood vessels of your heart.

What is the procedure called to check for blocked blood vessels?

Close. Coronary angiogram. Coronary angiogram. To complete a coronary angiogram, a catheter is inserted in an artery in your groin or arm and threaded through your blood vessels to your heart. Your doctor uses the angiogram to check for blocked or narrowed blood vessels in your heart. A coronary angiogram is a procedure ...

How is a catheter inserted into the heart?

A small incision is made at the entry site, and a short plastic tube (sheath) is inserted into your artery. The catheter is inserted through the sheath into your blood vessel and carefully threaded to your heart or coronary arteries.

How long does it take to get an angiogram?

Having an angiogram takes about one hour, although it may be longer, especially if combined with other cardiac catheterization procedures. Preparation and post-procedure care can add more time.

Why aren't angiograms done?

Other blood vessel problems or a chest injury. A heart valve problem that requires surgery. Because there's a small risk of complications, angiograms aren't usually done until after noninvasive heart tests have been performed, such as an electrocardiogram, an echocardiogram or a stress test.

What is a catheter used for in angiography?

Using the catheter, a technician injects a special dye into the blood vessels that lead to the brain. It is a way to produce x-ray pictures of the insides of blood vessels.

Why is cerebral angiography used?

Usually, cerebral angiography is used after another test has already found an abnormality.Angiography is used to help detect and diagnose acute stroke. The images that result from cerebral angiography are not available from other techniques.

What is angiography in medical terms?

Angiography is a way to produce X-ray pictures of the insides of blood vessels. When blood vessels are blocked, narrowed, damaged or abnormal in any way, problems including stroke may occur. Angiography helps your physician determine the source of the problem and the extent of damage to the blood vessel segments that are being examined.

Where is contrast dye injected?

The catheter will be positioned within the carotid arteries and contrast dye will be injected. During the injection of the contrast dye, you may have a warm feeling. A regular X-ray will be used to take pictures of the blood vessels in the brain.

Can a catheter break off plaque?

With this procedure, there is a risk of stroke caused by the catheter. It is possible that the catheter could break off plaque. This plaque could block a smaller blood vessel in the brain and lead to stroke.

Is Cleveland Clinic a non profit?

Cleveland Clinic is a non-profit academic medical center. Advertising on our site helps support our mission. We do not endorse non-Cle veland Clinic products or services. Policy

What type of angiography is recommended for narrowing blood vessels?

If your healthcare provider believes that you may have a narrowing or blockage of blood vessels somewhere in your body, he or she may recommend magnetic resonance angiography. Other conditions that your healthcare provider can look for during this test include:

What is magnetic resonance angiography?

In this test, radio waves, a magnetic field, and a computer create a scan of your body parts to look for health problems.

How long does it take for an MRI to be done?

The MRI scanner typically makes a lot of noise, including loud humming noises, so don’t be alarmed. The full scan may take an hour or longer. This will depend on the type and number of blood vessels that your healthcare provider wishes to examine. The scan typically causes no side effects or complications.

What is contrast in angiography?

During magnetic resonance angiography, you lie flat inside the magnetic resonance imaging scanner. This is a large, tunnel-like tube. In some cases, a special dye, known as contrast, may be added to your bloodstream to make your blood vessels easier to see. When needed, the contrast is given with an intravenous (IV) needle.

What happens if you have a kidney problem after an MRI?

If you have a problem with your kidneys, you are at risk of developing a severe reaction after receiving the MRI contrast dy e that is used to make blood vessels more visible.

What is the term for a narrowing of the blood vessels in the arms and legs?

Narrowing or blockage of the vessels in the arms or legs. Renal artery stenosis, a narrowing of the blood vessels in the kidneys that can lead to high blood pressure and even renal failure.

What is the meaning of "aortic dissection"?

An aneurysm or weakness in the wall of an artery. A narrowing of the aorta, or aortic coarctation. Bleeding in and along the wall of the aorta, or aortic dissection. To find the cause of a stroke. Signs of heart disease. Narrowing or blockage of the vessels in the arms or legs.

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Risks and Contraindications

  • As with any medical procedure, there is the possibility of side effects due to or complications caused by angiography. These may be more likely if there are procedural mistakes, allergies, or coexisting medical conditions. Major complications are rare (estimated to be 2% in cardiac cath…
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Before The Test

  • Prior to testing, the physician who is conducting the procedure will likely take a thorough history and do a physical examination to better inform the patient on the purpose, risks, and benefits of the angiogram. This is an excellent opportunity to ask any questions that might come up. When symptoms or health problems arise which relate to disrupted blood flow or blood vessel damag…
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During The Test

  • The healthcare provider, often a specialist in either cardiology or neurology, will lead a team that may include nursing staff as well as other providers, potentially including an anesthesiologist.
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After The Test

  • For the day after the procedure, it can be helpful to have someone around to monitor for any issues that may develop. They may need to help prepare food or administer medications. If there is a serious problem, it may be necessary to contact the healthcare provider and get emergency medical assistance. For 24 hours following angiography, the patient should not drink alcohol, s…
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Interpreting Results

  • Often an angiogram is performed with both a diagnostic portion, to better visualize the nature of the problem, and a treatment portion, in which an intervention immediately corrects the underlying problem. Unlike other tests, it is often unnecessary to gather information to review and be used at a later date. Due to the nature of the procedure, it is best to intervene promptly during the time th…
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A Word from Verywell

  • An angiogram is an effective procedure to diagnose and treat disorders that commonly affect the blood supply of the heart and brain. Risks of injury from angiography have declined and are generally slight, but complications are possible.3Discuss any concerns you have with your healthcare provider. In most cases, the anticipated benefits will far outweigh any potential risk o…
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Before The Angiogram

Medications

on The Day of The Angiogram

Please Bring A Current List of Medications and allergies.

During The Angiogram

  1. You will be asked to change into a hospital gown.
  2. The test itself will take approximately 2 to 3 hours. Moderate sedation may be given.
  3. During an angiogram, a long slender tube called a catheter is inserted into a large artery (generally, in the groin area).
  4. The catheter is slowly and carefully threaded through the artery until its tip reaches the segm…
  1. You will be asked to change into a hospital gown.
  2. The test itself will take approximately 2 to 3 hours. Moderate sedation may be given.
  3. During an angiogram, a long slender tube called a catheter is inserted into a large artery (generally, in the groin area).
  4. The catheter is slowly and carefully threaded through the artery until its tip reaches the segment of vessel to be examined by angiography.

After The Angiogram

1.Angiography: Uses, Side Effects, Procedure, Results

Url:https://www.verywellhealth.com/angiography-4801242

18 hours ago What is an Angiogram? An angiogram is a radiological procedure. There are actually two types of angiograms. Both use advanced x-ray technology to deliver images of arteries to a monitor. Computed tomography angiography (CTA) is noninvasive, meaning that there are no incisions made on the body. Patients are given a local sedative to numb the chest area, and an IV is …

2.What is an Angiogram and How is it Performed? - Palm …

Url:https://www.palmvascular.com/angiogram/what-is-an-angiogram-and-how-is-it-performed/

13 hours ago Angiography is an X-ray examination of your veins, arteries and heart chambers that looks at blood flow. Angiography may be used to identify the sites where the arteries have become narrowed or blocked and can also reveal any blood clots, calcium deposits or any weakening or bulging of your artery walls . An angiogram is often needed to decide what treatment is …

3.How Does an Angiogram Work & Is it Painful to Have an …

Url:https://www.epainassist.com/test-and-procedures/angiogram

24 hours ago  · Doctors can do an angiogram on different parts of the body, such as: the heart, during the diagnosis or treatment of some aspects of heart disease the brain, to help diagnose a stroke or the risk of a stroke the chest or lungs, for example, to detect bleeding the kidneys, to look for high pressure ...

4.What Is an Angiography Procedure? - Heart Failure Matters

Url:https://www.heartfailurematters.org/what-your-doctor-can-do/angiography/

3 hours ago  · An angiogram is a medical technique used to examine the inside of blood vessels and organs of the patient’s body to detect any blockages present in the arteries that curb the blood supply to various organs. Primarily, the process of an angiogram includes injecting an iodine dye commonly called the contrast medium into the blood vessel and viewing it under X …

5.Videos of How Does Angiography Work

Url:/videos/search?q=how+does+angiography+work&qpvt=how+does+angiography+work&FORM=VDRE

5 hours ago  · During a coronary angiogram, a type of dye that's visible by an X-ray machine is injected into the blood vessels of your heart. The X-ray machine rapidly takes a series of images (angiograms), offering a look at your blood vessels. If necessary, your doctor can open clogged heart arteries (angioplasty) during your coronary angiogram.

6.Angiogram: Uses, procedure, cost, side effects, and safety

Url:https://www.medicalnewstoday.com/articles/326825

10 hours ago Angiography is a way to produce X-ray pictures of the insides of blood vessels. When blood vessels are blocked, narrowed, damaged or abnormal in any way, problems including stroke may occur. Angiography helps your physician determine the source of the problem and the extent of damage to the blood vessel segments that are being examined.

7.How is Angiogram Done & How Long Does it Take to Do …

Url:https://www.epainassist.com/test-and-procedures/how-is-angiogram-done

5 hours ago In this test, radio waves, a magnetic field, and a computer create a scan of your body parts to look for health problems. Magnetic resonance angiography–also called a magnetic resonance angiogram or MRA–is a type of MRI that looks specifically at the body’s blood vessels. Unlike a traditional angiogram, which requires inserting a catheter into the body, magnetic resonance …

8.Coronary angiogram - Mayo Clinic

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9.Cerebral Angiography & Procedure - Cleveland Clinic

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