Descriptions

CT Guided F.N.A.C Test

About The Test

Computed tomography-guided Fine Needle Aspiration Cytology (CT guided FNAC) is a pinhole non-invasive diagnostic procedure done to extract cells from the target site and study them under the microscope for validation and diagnosis..

For the exam, the participant is lying on a table connected with the CT scanner. It is a massive doughnut-shaped machine. The CT scanner transmits X-rays to the body. Every rotation of the scanner is one second to provide an image of a tiny section of the organ that is being examined.

A portion of the scanner can tilt to follow your spinal column's curvature. All images are saved in a group on the computer. Printing them is also possible.

In some instances, a dye known as the contrast agent can be placed in the vein inside your arm or the canal of your spine.

The dye is utilized to measure blood flow and look for tumours and regions where there is inflammation and nerve injury. The dye helps make organs and structures easier to see on CT images.

What is the reason for it?

A CT scan of the spine can be used to:

• Take a look at your spine's bones (vertebrae).

• Many issues affect the spine, like fractures, tumours, deformities, infections, or shrinking the spine canal ( spinal stenosis).

• Locate a Herniated disc of the spine.

• Verify whether osteoporosis is the cause of compressive fractures.

• Examine any issues with the spine that have been present since birth (congenital).

• Examine the problems that are encountered during the standard X-ray test.

• Examine how well spinal treatment or surgery is working on the spine issue.

How to Prepare

Before you undergo the CT scan, inform your doctor about the following:

• Are you pregnant or could be.

• Are you allergic to any medication that contains Iodine dyes?

• Are suffering from a heart problem like heart failure.

• Are you suffering from diabetes?

• Take metformin. It is possible to alter your medication for a few days before and following the test.

• Have had kidney problems.

• Are you suffering from asthma?

• Have been diagnosed with the disease multiple myeloma.

• Have you had an X-ray exam with barium as a contrast material (such as a barium-based enema) within the last four days? Barium appears on X-ray images and makes it difficult to see the image.

• Get very anxious when you are in small areas. It is crucial to remain still in your CT scanner, which means you might require a tranquillizer to ease your anxiety.

You can arrange for someone to bring you home if you are given a sedative during the test.

Please consult your physician about your concerns regarding the need to test, its potential risks, or how the test will be conducted. To make sure you know the test's significance, you should fill out this medical test form.

How It Is Done

The images are typically reviewed by a physician ( radiologist). A technologist in radiology typically performs the CT scan. Other doctors may also review the results of a CT scan.

You may need to take off any jewellery. It is necessary to remove the majority of all of your clothing based on the subject being examined. You might be able to wear underwear for specific tests. The test will provide you with an appropriate gown for the examination.

In the course of your test, you'll lay on a table that is connected by the CT scanner.

The table slides in the round opening of the scanner, and the scanner rotates over your entire body.

The table can move as the scanner snaps pictures. There may be the sound of a click or buzz when the scanner and table move. It is crucial to remain still throughout the test.

During the exam, you could be in a private room. However, the technologist will be watching you through a screen. It will be possible to communicate with the technologist via the two-way intercom.

The test should take between 30-60 minutes. Most of that time will be used to prepare to take the test. The actual scan will take about a couple of minutes.

CT scan with contrast (CT myelogram)

A typical CT scan could be taken before the contrast material to create the CT myelogram is provided. The dye is generally placed within the space around the spinal cord.

A small amount of the fluid that is in your spinal canal (cerebrospinal fluid) could be removed to allow other tests to be performed on it.

If dye is injected into your back, you'll lie on your stomach or lying on your back on tables. The dye is typically placed into your lower back but could be placed at the skull's base. The skin around the site can be cut. The area is cleaned. The areas around the site could be treated with medication.

The table could be tilted or be moved to different positions to move the dye into different parts of the spine.

It is important to lie still so that the dye remains in the correct place to give clear images. Your breathing rate, pulse, and blood pressure could be monitored during the test.

In certain instances, dyes can be placed in the vein (IV) within your arm.

A CT scan that uses contrast material generally takes about 15-30 minutes. Drink plenty of fluids during the 24 hours following the scan to rid the dye from your body.

What It Feels Like

The test won't cause any pain. The table you sit on could feel stiff, and the room could be fantastic. It can be challenging to remain still throughout the test.

Certain people are nervous within the CT scanner.

If you take medicine to ease your stress or when contrast material is employed, you can get an IV inserted into your arm or hand. It is possible to feel a pinch or sting when the IV is put in.

The dye can cause you to feel hot and flushed and leave the sensation of a metal taste on your lips.

Some people experience nausea in their stomachs or experience headaches. Let the technologist know or your doctor about the way you feel.

If you've had dye put on the back of your body, it could experience a sting or pinch when you put the needle into it.

Following a test where the dye is placed on your back, you'll be instructed that you should keep your head straight and not bend or lie down flat. This can help avoid migraines as well as seizures.

Risks

The likelihood of a CT scan causing an issue is very low.

• In contrast, there is a risk of having an allergy to the substance.

• If you breastfeed and are concerned about whether the colour used for this testing is safe, speak with your physician. The majority of experts believe that your baby's milk absorbs small amounts of dye, and less of it is passed on to the infant. However, if you'd prefer to store some of your breastmilk before the test, use it an hour or so following the test.

• If you have diabetes and take metformin (Glucophage), the dye could cause issues. Your doctor will advise you when you should quit taking metformin and start taking it once more after the test so that you do not experience any issues.

• There is a possibility of nausea or vomiting following the test.

• There is a chance of getting an infection at the site of the needle in your spine or blood leaking into the area around the spinal cord.

• A needle inserted into the space around the spinal cord could result in a headache. In rare instances, seizures can occur following the injection of contrast substances.

• There is a slight possibility of getting cancer using specific CT tests. footnote1 The risk is more significant in young adults, children, and those who undergo several radiation tests. If you're worried about the possibility of developing cancer, speak with your physician regarding the risks and benefits of having a CT scan and verify with your doctor that the scan is required.

Results

The computed tomography (CT) scan utilizes radio waves to create clear images of vertebrae and the spine located in the cervical spine (cervical spine) and the upper back (thoracic spine) or the lower back (lumbosacral spine).

All results are typically available to your doctor within one to two days.

CT scan of the spine

 normal:

The spine bone ( vertebrae) is standard in form, number, and alignment.

The joints and discs that provide support to the spinal column are normal.

Routine spinal canal both size and shape.

If Contrast material is employed, the material flows equally throughout the canal of spinal nerves. There is no blockage or narrowing in the canal occurs.

The nerves that leave the spinal cord is squeezed or pinched. There are no bulges, growths, or bulges there.

Abnormal:

In the case of spinal bones, they (vertebrae) are damaged, missing, or out of alignment.

One or more discs could be damaged. Several disks with herniated edges are discovered.

The passage of contrast material through the canal of spinal nerves is blocked or blocked, which indicates the narrowing in the spinal canal ( spinal stenosis).

The vertebrae are a sign of arthritis or bone issues due to osteoporosis.

A condition present since birth (congenital disease) is found in the spine or vertebrae.

The result is an abscess or spinal tumour is discovered.

What affects the test

These factors could stop you from taking the test or could alter the results of the test:

• Pregnancy. CT scans aren't typically performed during pregnancy.

• Barium is used in another test. Barium appears in the CT scan. If it is necessary to take a CT image of the back of the lower area is required, it should be taken before any test that uses barium, for example, the Barium Enema.

• Metal objects inside the body. They include surgical clips or the metal used in joint replacements, which could block an unobstructed image of the body.

• You cannot sit for the duration of the test.

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