Gallium Scan

A Gallium scan is a type of imaging test that helps doctors detect cancer, infections, or inflammation in the body. During the procedure, a small amount of a radioactive substance is injected into your bloodstream. This substance, called gallium, travels to areas of your body where there's inflammation or infection. A special camera then captures detailed images of these areas, helping doctors identify any issues.


What are the uses of a gallium scan test?

Using a gallium scan, you can determine the following:

  • Hodgkin lymphoma (it is a type of cancer).
  • Osteomyelitis infection(bone infection).
  • Abscess (collection of pus).
  • Inflammatory diseases (for example, pulmonary fibrosis or sarcoidosis).

When a person develops a fever for an unidentified reason, the test is frequently utilized. After the therapy, it routinely searches for any leftover cancer cells.

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What Abnormal Results Mean

If gallium is detected outside the usual areas, it may indicate:

  • Infection
  • Inflammation
  • Tumors (including Hodgkin disease or non-Hodgkin lymphoma)

The test is also commonly used to check for lung-related issues, such as:

  • Primary pulmonary hypertension
  • Pulmonary embolism (blood clots in the lungs)
  • Respiratory infections, especially Pneumocystis jirovecii pneumonia
  • Sarcoidosis
  • Scleroderma affecting the lungs
  • Lung tumors

How is the test administered?

  • For the Gallium scan test, your vein will get an injection of gallium. Gallium is a radioactive substance. Gallium circulates in the blood and accumulates in bones and certain organs.
  • Your doctor will advise you to schedule a later appointment for the scan. The scan will happen six to forty-eight hours after the gallium injection.
  • The length of the test is determined by the condition your doctor is checking for. People have occasionally been scanned more than once.
  • The scanning table is where you will be lying on your back. Where the gallium has amassed in the body is discovered using a specialized camera.
  • The 30- to 60-minute scan requires you to remain still.
  • The injection will cause a strong prick to occur in your skin. For a few minutes, the area can hurt.
  • Holding motionless throughout the scan is the most difficult aspect. The scan itself causes no discomfort. Before the scan starts, the technician can assist in making you more comfortable.

How to prepare for the test?

The test can be impacted by bowel feces. The night before the exam, you might need to take a laxative. You might also have an enema one to two hours before the exam. You can eat and drink liquids.

A consent form needs to be signed by you. Before the exam, you must remove any jewelry and metal items.This helps ensure the test results aren’t affected by stool in the intestines.

If you're pregnant, think you might be pregnant or are breastfeeding, be sure to inform your doctor.

Purpose of gallium scan tests involving radiation is generally not recommended for pregnant or breastfeeding women, and it's best to avoid them for very young children when possible.


Risks of the gallium scan test?

There is very little risk of radiation exposure. This risk is lower than that associated with CT or X-rays. If at all possible, pregnant women, nursing mothers, and young infants should avoid radiation exposure.

A gallium scan procedure is very safe , but like any medical test, it comes with some risks. These are rare and may include:

  • Allergic reactions
  • Rash
  • Nausea

The risks of a gallium scan may vary based on your age and other health conditions, so it’s important to discuss any concerns with your healthcare provider. Pregnant women should avoid the scan if possible, as it may not be safe for the developing baby.


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Understanding results

  • Normal Results Gallium normally collects in bones, the liver, the spleen, the large bowel, and breast tissue.
  • Abnormal Results

    Gallium detected outside normal areas can be a sign of:

    • Infection
    • Inflammation
    • Tumors, including Hodgkin disease or non-Hodgkin lymphoma
  • The test may be done to look for lung conditions such as:

    • Primary pulmonary hypertension
    • Pulmonary embolism
    • Respiratory infections, most often Pneumocystis jirovecii pneumonia
    • Sarcoidosis
    • Scleroderma of the lung Tumors in the lung

Important information

A gallium scan won't always detect all tumors. The scan could reveal inflammatory lesions, such as recent surgical scars. But they don't always mean you have an infection.


**Note- Gallium scan test costs in India at different locations may vary

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Frequently Asked Questions

1. What factors can influence ABG results?

Smoking, secondhand smoke inhalation, fever, or rapid breathing can all have an impact on test results.

2. What needle size is used for ABG?

For an adult, use a 20-gauge, 2.5-inch needle for a femoral sample and a 22-gauge, 1.25-inch needle for a radial artery puncture with an ABG syringe. A 23 gauge or a 25 gauge needle can also be utilized.

3. What hue ABG tube is used?

No additive in the red top tube.

4. How is an ABG sample collected?

The sample can be collected by inserting a catheter into an artery or by puncturing an artery using a needle and syringe.

5. Where is arterial puncture conducted on the body?

The Radial Artery.

6. What does an arterial blood gas test reveals?

An arterial blood gasses (ABG) test determines the acidity (pH) and amounts of oxygen and carbon dioxide in artery blood.

7. How frequently should ABG be performed?

Intermittent arterial blood gas analyses should be performed up to every 10 minutes.

8. How long does it take for ABG levels to fluctuate?

A change in Fio2 may take at least 30 minutes.

9. What are the ABG contraindications?

ABG sampling contraindications.

  • Infection at the site.
  • Anatomy has been distorted.
  • Arterio-venous fistulas are present.
  • The leg to be sampled has the peripheral vascular disease.

10. In what circumstances should ABG be done for the patients?

To look for severe respiratory and lung disorders such as asthma, cystic fibrosis, chronic obstructive pulmonary disease ( COPD), or obstructive sleep apnea.

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