Known UnknownScience And Technology

What is Angiography and How is it Performed?

Angiography: Angiograms are a type of medical imaging that can be performed to obtain a visual representation of the body’s arteries and veins.

This diagnostic procedure is carried out to assist in the diagnosis and treatment of a variety of conditions that affect the blood vessels. Some of these conditions include blockages, aneurysms, and other problems.

This procedure is normally carried out with the assistance of X-ray technology and a particular dye that is referred to as contrast material.

The contrast material is injected into the blood vessels in order to assist in making the blood vessels more visible on the X-ray images.

In the following paragraphs, we will provide an in-depth explanation of angiography as well as how the procedure is carried out.

There is no other illness that takes the lives of so many individuals. Heart disease is the leading cause of death for adults aged 30 to 60 in Bangladesh, with a mortality rate of 21.8%.

This indicates that one person in every five is at danger of passing away from heart disease.

This figure does not paint a very favorable picture for us. The heart is responsible for regulating blood flow to all of the body’s other organs.

Angiography: A modern instrument for taking pictures inside the heart

People often refer to the heart as the “pump machine” because it is responsible for supplying blood to the body. The distribution of blood throughout the body is handled by an intricate and extensive network of blood vessels.

If the lengths of all the blood vessels in an adult human body were added together, the sum would be close to 160,000 kilometers long.

Blocking off the blood supply to the heart muscle or the brain is one of the primary contributors to heart disease and is also one of the leading causes of stroke.

When there is an accumulation of fat in the blood vessels, the blood vessels themselves become more constricted.

What exactly is an angiogram?

Angiograms are a type of diagnostic test that give medical professionals a visual representation of the blood vessels that are located within the body.

This process is frequently utilized to assist in the diagnosis and treatment of a variety of disorders that impact the blood arteries, including blockages, aneurysms, and other problems.

Angiography is accomplished with the assistance of X-ray technology and a unique dye that is referred to as contrast material.

The contrast material is injected into the blood vessels in order to assist in making the blood vessels more visible on the X-ray images.

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What are the Purposes of Angiography?

Angiography is a procedure that is used to help diagnose and treat a variety of illnesses that affect the blood arteries.

Some of these conditions include blockages, aneurysms, and other problems.

Angiography is conducted for a variety of purposes, some of the most prevalent of which are as follows:

  • In order to aid in the diagnosis of any obstructions or narrowings in the blood vessels
  • In order to aid in the diagnosis of aneurysms, which are areas of weakness in the blood vessels that, if they burst, can cause major health issues
  • In order to aid in the diagnosis of anomalies involving blood vessels, such as malformations or cancers
  • In order to assist in the diagnosis of, and treatment for, problems that are associated with the blood flow to the heart, brain, and other organs

How is the Angiography Procedure Carried Out?

Angiograms are normally carried out in a medical facility or a radiology clinic, and the procedure itself can take anywhere from one to two hours to do.

In order to better observe the blood vessels located inside the body, the treatment is carried out by a specialist known as an interventional radiologist.

This professional makes use of X-ray equipment in conjunction with a specific dye that is referred to as contrast material.

The preparation of the patient for the angiography process is the first step in the procedure. In most cases, the patient will be instructed to remove all of their clothing and valuables before donning a medical gown.

After that, the patient is positioned on a table, and an intravenous (IV) line is placed into a vein. Through this intravenous (IV) line, the contrast material will be injected into the blood vessels.

After preparing the patient, the interventional radiologist will use X-ray technology in conjunction with the contrast material to visualize the patient’s blood arteries.

Following the injection of the contrast material into the blood vessels, X-ray images are acquired to assist in the visualization of the blood vessels.

These images will be utilized by the interventional radiologist in order to assist in the diagnosis and treatment of a variety of disorders that impact the blood arteries, including blockages, aneurysms, and other problems.

Complications and Dangers Associated with Angiography

Angiograms, like any other type of medical procedure, are not without their share of potential dangers and difficulties. Angiography is known to be connected with a number of potential dangers and consequences, including the following:

  • Reactions of an allergic nature to the contrast substance
  • Bruising or bleeding at the place where the IV is inserted
  • Clots of blood form
  • Kidney damage
  • Attacks of the heart or the brain
  • Nerve injury
  • Aching or distressing sensations
  • Radiation exposur


Before angiography may be performed on you, it is essential to have a conversation with your primary care physician about the possible dangers and side effects.

Your physician will discuss the potential benefits and dangers of the procedure with you and assist you in coming to an informed decision with regard to it.

What is Angiography and How is it Performed?

The continuity equation in physics states that the flow velocity will increase whenever there is a smaller area of the cross-section.

As a direct consequence of this, the body’s blood pressure rises significantly. When the heart has to beat much faster than normal.

When the blood supply to the heart muscle is interrupted, a heart attack can occur if a blood vessel is either completely blocked or partially blocked.

When the blood supply to the brain is cut off, this is known as a stroke.

The examination of the health of the blood vessels in the body’s periphery using X-rays is referred to as peripheral angiography.

The process of examining the coronary arteries of the heart is referred to as coronary angiography.

Angiography is done with the help of machines that use fluoroscopic technology. For specific kinds of fluoroscopic angiography, there are particular kinds of fluoroscopic devices.

The image intensifiers and X-ray tubes of contemporary C-arm fluoroscopes are mounted on opposite sides of one another.

This fluoroscope can be adjusted to the appropriate position once the patient has been positioned in bed so that a clear picture of the organs and other structures inside the patient’s body can be observed.

Angiography: A modern instrument for taking pictures inside the heart
Angiography machine

The number of blood vessels per unit of body tissue is not particularly high. In order to prevent an excessive absorption of X-rays. As a consequence of this, X-ray scans do not differentiate between blood vessels and other components such as fat and muscle.

However, if you are unable to see the blood vessels in the image independently, it can be difficult to determine whether there is a problem somewhere in the blood vessels.

The digital subtraction method is utilized on the computer in order to carry out this separation. Therefore, the name “digital subtraction angiography” has been given to this form of angiography (DSA).

After the angiographic machine has been properly calibrated, a local anesthetic is administered to the patient before a small catheter is introduced into the patient’s arm or leg through a tiny hole.

The fluoroscopy procedure checks to see if the catheter has been properly positioned within the artery. There is no part of the nervous system that can be found within the blood vessels.

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Therefore, there will be no discomfort even if the catheter is inserted into the artery. A path is followed by the catheter as it makes its way to the heart.

On a fluoroscopy monitor, the attending physician keeps a close eye on everything. At this point, the catheter, the heart, and the muscles are all included.

Choose a photo that includes everything, including the blood vessels. This type of picture is known as a mask picture.

After that, a catheter is used to inject a very little amount of contrast media into the blood arteries of the heart.

After that, a greater degree of X-ray absorption takes place. After that, the piece of software takes each frame and subtracts the mask image from it.

As a direct consequence of this, the monitor no longer displays anything other than the blood vessels that have been contrasted.

The contrast material appears to be making its way through the blood vessels at a measured yet steady pace, as shown on the monitor.

It can be determined whether or not there is a blockage in the blood vessel by seeing where the contrast medium goes and stops moving through the vessel. As a result, the obstruction in the blood vessels is caught.

Angiography: A modern instrument for taking pictures inside the heart
In angioplasty, the blockage of blood vessels is repaired in this way.

Unblocking blood vessels can be accomplished in a number of different ways. If there is an accumulation of fat in the blood arteries, it can be inflated from the outside by inserting a catheter with a small balloon inside of it and then delivering the balloon to the area where the fat has accumulated. Often, air pressure is used to remove fat that has been frozen.

Because of this, the obstruction that was there in the blood arteries is removed, and the circulation of blood returns to normal.

When the balloon is deflated, the block frequently reappears in its original location. When this occurs, a thin metal tube, sometimes known as a stent, is inserted into the affected area.

Strangely, the word “stent” was mentioned. In the nineteenth century, Charles Thomas Stent practiced dentistry in the city of London. He was not involved in the heating process in any way.

He came up with a chemical compound that could be used as a dental therapy and was attached to the centre of a tooth that had been shattered.

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In subsequent operations, a stent would be inserted to help hold a tissue in place. Over time, that was settled on as the name.

This technique removes the obstruction that was caused by ringing or stenting in the heart and allows blood to flow more freely. The term “angioplasty” refers to this surgery in the medical field.

Angiography serves as the foundation for the angioplasty process. This angiography is responsible for preventing the deaths of millions of people annually.

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