Introduction, uses, risks, and procedure and price of PET CT Scan

This article is about Introduction, uses, risks, and procedure and price of PET CT Scan Introduction

A positron emission tomography, also known as a PET scan, uses radiation to show activity within the body on a cellular level.

Positron emission tomography (PET) is being increasingly used for diagnosis, staging, and follow-up of various malignancies. It has been studied in the evaluation of various tumors including but not limited to solitary pulmonary nodules, non–small cell lung carcinoma, lymphoma, melanoma, breast cancer, and colorectal cancer.

Combined with a CT or MRI scan, a PET scan can produce multidimensional, color images of the inside workings of the human body.

It is most commonly used in cancer treatment, neurology, and cardiology.

It shows not only what an organ looks like, but how it is functioning.

A PET scan is used to diagnose certain health conditions, to plan treatment, to find out how an existing condition is developing, and to see how effective a treatment is.

Facts on PET CT Scan

Here are some key points about PET scans. More detail is in the main article.
• PET scans are often used to diagnose a condition or to track how it is developing.
• Used alongside a CT or MRI scan, it can show how a part of the body is working.
• PET scans are often used to investigate epilepsy, Alzheimer's disease, cancer, and heart disease
• A scan is not painful, but patients should not consume any food for at least 4 to 6 hours before a scan. They should drink plenty of water.
PET scans are often used with CT or MRI scans to help make a diagnosis or to get more data about a health condition and the progress of any treatment.

While an MRI or CT scan shows how part of the body looks, a PET scan can reveal how it is functioning.

PET scans are commonly used to investigate a number of conditions:
• Cancer
• Heart disease
• Epilepsy
• Alzheimer's disease

How it works

In a PET scan, a machine detects radiation that is emitted by a radiotracer.
A radiotracer consists of radioactive material that is tagged to a natural chemical, such as glucose.
This radiotracer is injected into the body, where it travels to cells that use glucose for energy.
The more energy a group of cells needs, the more the radiotracer will build up in that location. This will show up on images that are reconstructed by a computer.

The cells, or activity, will show up as "hot spots" or "cold spots."

Active areas are bright on a PET scan. They are known as "hot spots."

Where cells need less energy, the areas will be less bright. These are "cold spots."

Compared with normal cells, cancer cells are very active in using glucose, so a radiotracer made with glucose will light up areas of cancer.


A PET scan is normally an outpatient procedure.

Normally, the patient should not consume any food for at least 4 to 6 hours before the scan, but they should drink plenty of water. They may have to avoid caffeine for at least 24 hours before the scan.
First, the doctor will inject a small amount of radiotracer into a vein. The tracer can also be breathed in as a gas, taken by mouth, or injected directly into an organ.

Depending on which the organ is involved, it may take from 30 to 90 minutes for the radiotracer to reach the targeted part of the body.

Meanwhile, the patient will normally be asked to stay still and not talk. Some patients may be given medication to relax.

The patient will probably need to wear a gown, and they may have to remove jewelry.

When the patient is ready, they will be taken to a special room scan for the scan. They will lie down on a cushioned examination table.

The table slides into a large hole so that the patient is surrounded by the machine.

The patient will have to stay as still as possible. They may be able to listen to music.

During the scan, the machine takes images.

Depending on which part of the body is being scanned, this should take about 30 minutes.

It is not painful. If the patient feels unwell, they can press a buzzer to alert the staff.

A qualified practitioner will watch the patient during the scan.

The entire testing procedure typically takes about 2 hours. Most patients can go home as soon as the scan is finished.
Patients should consume plenty of liquid to flush the radioactive drugs out of their system more quickly. The radiotracers should have left the body completely within 3 to 4 hours.


PET scan with its widespread applications has emerged as an indispensable tool in the detection, staging, treatment monitoring, and identification of recurrent disease in a large number of malignancies.

Price of PET CET Scan in Delhi

The price of PET CT Scan in Delhi is around 25,000/- but Easy Book My Lab provide PET CT Scan only in 9,999/- at Best PET CT Scan Centre in Delhi.

By: Easy Book MY LAB

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Submitted On Feb 06, 2019. Viewed 14 times.

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