PET Scan Lung, Heart and on Other Body Parts - How does it work

 Positron emission Tomography, or PET, is a non-invasive procedure that creates a radioactive image of any part of the body such as the heart or lung. A radioactive tracer, also known as radionuclides, is injected into the blood to accomplish this. The tracer is absorbed into the bloodstream through the muscles. By measuring the blood flow, the scan can determine if the heart health is good or bad. PET scans can help diagnose narrowed arteries and dead cells after a heart attack.

A PET Scan's Basic Functions

The following steps are required to conduct a PET CT scan:

The tracer is administered to the bloodstream. It is an organic compound that can be found in bodies that have been radioactively tagged. It is generally made from glucose, ammonia, or water.

Once inside the body, the tracer emits gamma radiation rays.

A detector circles the body to pick up the beams and sends them to a computer. The system converts these signals into clear images.

By combining photos of thin slices of the heart, you can create a complete image. To create a 3-D and holistic image, each slice is taken from different angles and directions.

The picture can be used by a healthcare professional to determine the function of the heart. The tracer will be taken up well if the muscles are strong. The tracer will not be taken up if the heart is damaged or the cells are dead. The PET scan will show different levels of tracer absorption as either brightness or colour gradient.

PET Testing: A Must

PET scans are currently one of the most accurate methods to detect cancer.

Coronary artery disease

Low blood flow

Tissue that has been injured

Dead tissue

A doctor may recommend the following cardiac procedures depending on what the scan shows:

Percutaneous coronary Intervention (PCI).

Bypass surgery of the coronary artery

These operations will restore blood flow to the heart.

Procedure for a PET Scan

A pet MRI scan can be done at a hospital or a diagnostic lab. The PET scan is performed by a nuclear medicine technician or a doctor who uses a PET machine. The patient's legs, arms and chest are first treated with small metal disks, or electrodes. The electrodes are attached to the device with wires. These electrodes are used to record and track the patient's heart rate. They are called an electrocardiogram. ECGs also indicate when to scan.

Next, create a baseline image. It takes approximately half an hour and is done without adding tracer. After scanning the baseline, tracer is injected through an intravenous needle that is attached to the arm. The tracer is then added and the patient lies down on a flat surface.

When the tracer emits signals, the detectors begin to scan. The computer converts the data into a digital image. In reality, a single image is a collection of multiple photographs taken at different angles and in various slices. The whole process can take between one and three hours. You must remain still throughout the entire scanning process to avoid blurred images.

Steps to Follow After PET Scanning

The scan is non-invasive and the patient can resume their normal activities immediately after the procedure is over. Drink plenty of fluids the day after the scan. Water allows radioactive material (i.e. the tracer) to be flushed out of the body. To follow up on test results, you should make an appointment to see the doctor.

PET: The risks

PET scanning is extremely safe for most people. The body is only exposed to very low levels of radiation. The kidneys can remove the radiation from the body within 24 hours. If the person is:

Pregnant

Nursing mother

The scanning could cause harm to the child in either case.

The Last Word

A doctor is the best person to consult for information about PET scanning. These questions can clarify any doubts:

What makes this test different from any other?

What should you do to prepare for scanning?

Are there any additional tests that are needed after the scan?

What are the expected results?

Although a PET scan is painless, there is always anxiety associated with any type of health test. This is why it is important to have the scan done in a trusted hospital or diagnostic laboratory. If the technicians and other staff are properly trained, it can make the experience more pleasant. At Anderson Diagnostics, one of the renowned scan centres in Chennai, we take the utmost care of our patients.

Not only do we offer high-quality PET equipment that provides accurate imaging, but also empathy and a great bedside manner. We will ensure that your health is our top priority when you have a scan done. We offer PET scans in a range of medical fields, including oncology, neurology, and cardiology. For more information about PET Scans, give us a call or visit our website.