Name of the Procedure:

Positron Emission Tomography (PET) with Concurrently Acquired Computed Tomography (CT) for Attenuation Correction and Anatomical Localization Imaging; Limited Area (e.g., Chest, Head/Neck)

Summary

A PET/CT scan combines two imaging techniques to provide detailed pictures of specific areas of the body, such as the chest or head/neck. The PET scan shows metabolic activity, while the CT scan provides anatomical detail, enhancing diagnostic accuracy.

Purpose

The PET/CT scan addresses conditions that require detailed images for diagnosis or monitoring, such as cancer, neurological disorders, and cardiovascular diseases. Its goal is to detect abnormalities, assess the extent of disease, monitor treatment progress, or aid in planning future treatments.

Indications

• Unexplained lumps or masses.
• Suspected cancer or tumor spread.
• Monitoring response to cancer treatment.
• Assessing brain disorders like Alzheimer's disease or epilepsy.
• Evaluating cardiovascular diseases and identifying areas of reduced blood flow.

Preparation

• Patients may need to fast for 4-6 hours before the scan.
• They should avoid strenuous exercise for 24 hours prior.
• Medications may need to be adjusted, and specific instructions will be provided.
• Patients should inform the provider of any allergies, particularly to contrast materials.

Procedure Description

1. The patient will lie down on a table connected to the PET/CT scanner.
2. A radiotracer (a small amount of radioactive material) is injected into the bloodstream.
3. After allowing time for the radiotracer to circulate, the scan begins.
4. The CT scan is performed first to capture anatomical details.
5. The PET scan follows, capturing metabolic activity information.
6. The combined images are analyzed to detect abnormalities.
7. The entire procedure is typically non-invasive and does not require anesthesia.

Duration

The procedure typically takes about 30 minutes to 1 hour, although it can vary depending on the specific area being examined.

Setting

The procedure is usually performed in a hospital radiology department or a specialized outpatient imaging center.

Personnel

• Radiologist
• Nuclear medicine technologist
• Radiologic technologist
• Possibly a nurse or medical assistant

Risks and Complications

• Exposure to a small amount of radiation.
• Allergic reactions to the radiotracer are rare but possible.
• Discomfort at the injection site.
• False positives or negatives, which may require further testing.

Benefits

• High accuracy in detecting and localizing abnormalities.
• Helps in early diagnosis and treatment planning.
• Can monitor disease progression or treatment response.
• Non-invasive with minimal discomfort.

Recovery

• Patients can usually resume normal activities immediately after the scan.
• They should drink plenty of fluids to help flush the radiotracer from their body.
• Follow-up appointments may be needed to discuss the results and next steps.

Alternatives

• Magnetic Resonance Imaging (MRI)
• Single Photon Emission Computed Tomography (SPECT)
• Ultrasound
• Each alternative has its pros and cons, such as different imaging capabilities, availability, and cost.

Patient Experience

• The patient may feel a slight cold sensation with the injection of the radiotracer.
• Remaining still during the scan is crucial for clear images.
• Mild discomfort from lying still or the injection site may occur.
• The medical team will provide comfort measures and support throughout the procedure.