PET-CT Scan for Detailed Diagnosis & Treatment Planning
When you or a loved one is undergoing evaluation for cancer or another complex medical condition, accurate imaging can help doctors understand what is happening inside the body. A PET-CT scan combines two types of imaging—Positron Emission Tomography (PET) and Computed Tomography (CT)—to provide information about both the metabolic activity and anatomical structure of tissues and organs. At Shalby Hospitals, PET-CT imaging supports doctors in evaluating disease, determining the extent of cancer, planning treatment and assessing response to therapy. Shalby has also invested in advanced PET-CT technology as part of its diagnostic infrastructure.
What Is a PET-CT Scan?
A PET-CT scan is an advanced nuclear medicine imaging test that combines functional and structural information in a single examination. During a PET scan, a small amount of a radioactive tracer, commonly FDG (fluorodeoxyglucose), is administered through an intravenous injection. Areas with increased metabolic activity may absorb more of the tracer and appear differently on the PET images. The CT component provides detailed anatomical information, helping doctors identify the exact location of an abnormal area. Together, PET and CT can provide a more comprehensive view than either scan alone and can help doctors diagnose disease, assess its extent and monitor treatment response.
Why Is a PET-CT Scan Done?
A PET-CT may be used to:
- Detect and evaluate certain cancers
- Determine the stage of cancer
- Check whether cancer has spread to other parts of the body
- Assess whether a tumour is responding to treatment
- Look for signs of cancer recurrence after treatment
- Help evaluate selected neurological conditions
- Assess certain cardiac conditions and tissue viability
- Support treatment planning when detailed information about disease location is required
PET-CT is particularly valuable in oncology because it can provide information about metabolic activity that may complement structural imaging.
Cancers Commonly Evaluated With PET-CT
- Lung cancer
- Breast cancer
- Lymphoma
- Colorectal cancer
- Head and neck cancers
- Certain thyroid cancers
- Oesophageal cancer
- Pancreatic cancer
- Other cancers where PET-CT is clinically appropriate
How Does a PET-CT Scan Work?
- Preparation: You may be asked to fast for a specified period before the scan.
- Tracer administration: A small amount of radiotracer is given through an IV.
- Resting period: You wait while the tracer circulates and is taken up by tissues.
- Scanning: You lie on a scanning table while PET and CT images are acquired.
- Image interpretation: The images are reviewed by qualified specialists and correlated with your clinical information.
The exact preparation and duration can vary depending on the type of PET-CT examination.
How Should You Prepare for a PET-CT Scan?
- Fasting for several hours before the scan, as advised
- Following instructions regarding food and beverages
- Informing the team if you have diabetes or problems with blood sugar control
- Sharing details of your medications and relevant medical history
- Informing your doctor if you are pregnant, may be pregnant or are breastfeeding
- Following any additional instructions related to the specific radiotracer being used
Benefits of PET-CT
- Combines PET and CT imaging in one examination
- Helps identify areas of abnormal metabolic activity
- Supports cancer staging and assessment of disease spread
- Helps evaluate treatment response
- Can assist in treatment planning
- Provides anatomical correlation for abnormal PET findings
- May help reduce the need for multiple separate imaging investigations in selected cases
Why Choose Shalby for PET-CT?
- Advanced diagnostic and imaging infrastructure
- Access to multidisciplinary clinical expertise
- Integration of imaging with cancer diagnosis and treatment planning
- Comprehensive care across oncology and other medical specialties
- Patient-focused guidance throughout the diagnostic journey
If your doctor has advised a PET-CT scan, timely and appropriate imaging can provide valuable information for diagnosis, staging and treatment planning. Consult the appropriate specialist at Shalby Hospitals to understand whether PET-CT is suitable for your condition and how to prepare for the examination.
