Looking for a trusted PET-CT scan near you? Sterling Hospitals, Sindhu Bhavan offers advanced molecular imaging backed by precision technology and experienced nuclear medicine specialists. 

We are equipped with the most advanced Siemens Biograph Horizon PET-CT featuring Time-of-Flight (TOF) technology, enabling superior image clarity, faster scanning, improved lesion detectability, and enhanced diagnostic accuracy for cancer, cardiac, and neurological conditions. 

Have questions about PET-CT scanning? Here’s what you need to know. 

What is a PET-CT SCAN? 

A PET Scan (Positron Emission Tomography) is an advanced nuclear imaging test that helps evaluate how your tissues and organs function. It is widely used to detect cancer, assess its spread, and identify various other medical conditions at an early stage. 

During the procedure, a small amount of a safe radioactive tracer is injected into the bloodstream. This tracer travels through the body and collects in areas with increased chemical or metabolic activity. 

Since cancer cells and certain diseased tissues often show higher metabolic activity, the tracer helps highlight these areas clearly on the scan. 

How is PET-CT Scan different from PET, CT, and MRI scans? 

Understanding the difference helps explain why PET-CT scan imaging is often preferred for cancer evaluation. 

• PET SCAN - Shows how cells are functioning and highlights areas of abnormal metabolic activity. 
• CT SCAN - Shows detailed structural images of organs, bones, and tissues. 
• MR I- Uses magnetic fields to create detailed images of soft tissues and anatomy. 
• PET-CT SCAN- Combines both functional (PET) and structural (CT) imaging in a single examination. This allows doctors to precisely locate abnormal activity within the body, improving diagnostic accuracy and treatment planning. 

What is a PET-CT Scan Used For? 

A PET-CT scan imaging is used to diagnose, stage, and monitor various medical conditions by combining metabolic and structural imaging in a single test. 

It is commonly recommended to: 

• Detect and monitor cancers (such as breast, lung, thyroid, colorectal, lymphoma, etc.) 
• Determine the stage of cancer and whether it has spread 
• Evaluate response to cancer treatment 
• Assess heart muscle function and blood flow 
• Detect certain neurological disorders such as Alzheimer’s disease, Parkinson’s disease, and other dementias 

By combining PET (which shows how tissues are functioning) and CT (which shows detailed anatomy), PET-CT provides greater diagnostic accuracy and helps guide precise treatment planning. 

What is the Siemens Biograph Horizon PET-CT with Time-of-Flight (TOF) technology? 

Sterling Hospitals, Sindhu Bhavan, is equipped with the Siemens Biograph Horizon PET-CT with Time-of-Flight (TOF) technology, an advanced imaging system designed to deliver highly accurate and detailed results. 

It uses advanced digital detectors with small crystal elements to capture high-resolution images, allowing doctors to detect even very small lesions with greater clarity. The Time-of-Flight (TOF) technology further enhances image quality by improving lesion detectability and anatomical detail. 

This system also supports faster scans, smoother workflows, and more comfortable experiences for patients. With intelligent imaging capabilities, it helps doctors make more precise diagnoses and deliver a higher standard of care. 

How is PET-CT Scan imaging done?  

A healthcare provider will then inject a small amount of radioactive tracer into a vein through an IV line. The tracer releases energy that the scanner detects to create images of your body. 

You will need to wait about 45 to 60 minutes for the tracer to circulate and be absorbed by your tissues. After this, you will lie on a narrow, padded table that slides into a large, donut-shaped scanner. The scanner moves slowly over your body while capturing images, and you will need to remain very still for about 30 minutes. You may hear clicking or buzzing sounds during the scan. 

Once the imaging is complete, the IV line will be removed. The entire test usually takes about two hours, including the waiting time for the tracer to be absorbed. 

Why might you need a PET-CT Scan? 

Your doctor may recommend a PET-CT scan to diagnose, stage, or monitor a variety of medical conditions with greater accuracy. This advanced imaging test is commonly used to detect cancer, determine whether it has spread, evaluate how well treatment is working, and identify any recurrence after therapy.  

 In addition to cancer care, PET-CT scan imaging is also used to assess heart and brain conditions. Your doctor may advise this test if you: 

• Have a family history of heart disease 
• Are undergoing treatment for heart disease and need to evaluate blood flow or heart muscle function 
• Have symptoms of neurological disorders such as tremors, memory loss, seizures, or suspected dementia 

How should I prepare for a PET-CT Scan? 

Your doctor will provide specific instructions before your PET-CT scan. In most cases, you may be asked to fast for 4 to 6 hours prior to the test and avoid tobacco, caffeine, and alcohol for 24 hours. 

If you have diabetes and take insulin, your doctor may adjust your dosage, as blood sugar levels can affect the accuracy of the scan. Inform your doctor about all the medications and supplements you are taking, but do not stop any medicines unless advised. 

If you have claustrophobia, let your care team know beforehand. Medication can be provided to help you stay relaxed during the procedure. 

Are there any radiation risks associated with a PET-CT Scan? 

A PET-CT scan involves minimal exposure to radiation. Only a small amount of radioactive tracer is used, and it naturally leaves the body through urine and stool within a few hours. Drinking plenty of water after the test helps flush out any remaining tracer. 

Radiation exposure is considered safe for most adults. However, it may not be suitable during pregnancy, as radiation can affect a developing baby. Please inform your doctor if you are pregnant, planning a pregnancy, or breastfeeding, as the tracer can pass into breast milk. 

Allergic reactions to the tracer are uncommon and, when they occur, are typically mild. 

Choosing the right imaging centre is an important step in your diagnosis and treatment journey. At Sterling Hospitals, Sindhu Bhavan, our advanced PET-CT scan technology, experienced nuclear medicine specialists, and integrated care approach ensure that you receive accurate results with clarity, confidence, and compassion. From early detection to treatment monitoring, we are committed to delivering precision-driven care you can trust. 

Take the next step toward informed and confident healthcare decisions. Book your PET-CT scan appointment today at Sterling Hospitals and let our experts guide you every step of the way. Call 98 98 98 78 78