Understanding your PET-CT
Questions to Ask Before — Booking a PET-CT Scan
A PET-CT is one of the more expensive and time-consuming tests in cancer care, and it is often arranged without a clear explanation. These questions help you understand what has been ordered, what it will involve, and what you are actually paying for.
Medically reviewed by Dr. T. Raghavender Reddy, Medical Oncologist, MBBS · DM (Medical Oncology) · MD (Radiation Oncology) · Last reviewed September 2026
- Ask before you book — Most questions are easier to answer before you commit than after the appointment is fixed.
- Cost varies significantly — The quoted price may or may not include the tracer, the written report, and the consultation to explain it.
- The reader matters — How useful the scan is depends on who interprets it, not only on the machine.
- Preparation is essential — Arriving after eating, or without your referral, can mean the scan cannot go ahead that day.
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A PET-CT is an expensive scan that takes most of a morning or afternoon. Before you book, ask your oncologist why it was chosen over a CT or MRI, which tracer will be used, who will write the report, and what the quoted price includes. These four questions prevent most surprises.
PET-CT at CION starts from Rs 10,499 — among the lowest published prices in Hyderabad, with no hidden charges. Indicative price, as of September 2026.
What do the words on my PET-CT referral actually mean?
- Tracer (radiotracer)
- A radioactive substance injected into a vein before the scan. It travels to areas of high cellular activity — including tumour cells — and makes them visible on the PET image.
- FDG (fluorodeoxyglucose)
- The most commonly used tracer in cancer PET-CT. It is a form of glucose, because cancer cells tend to absorb more glucose than normal tissue.
- Uptake period
- The waiting time between your tracer injection and the scan. You sit quietly because movement affects where the tracer goes and can alter the images.
- Staging
- A PET-CT done before treatment begins, to map how far the cancer has spread. The result guides which treatment plan is appropriate.
- Restaging
- A repeat PET-CT done after treatment to assess how the cancer responded, or to check whether it has returned.
- Nuclear medicine physician
- The specialist who reads your PET-CT images and writes the formal report. This is not your oncologist — it is a separately trained doctor.
- SUV (Standardised Uptake Value)
- A number in the report that describes how intensely an area absorbed the tracer. Your oncologist reads this alongside your full clinical picture — it is not a diagnosis by itself.
Why would my oncologist choose a PET-CT rather than a CT or MRI?
| PET-CT | CT scan | MRI | |
|---|---|---|---|
| What it shows | Metabolic activity and anatomical structure together | Anatomical structure and tissue density | Soft tissue detail and anatomical structure |
| Radioactivity | Yes — radiotracer and X-ray CT | Yes — X-ray only | None |
| Preparation | Fasting and a rest period after injection | Sometimes fasting | Usually none |
| Time at centre | Longer — allow most of a half-day | Shorter | Varies by body region |
| Typical use in cancer | Staging, restaging, treatment response | Routine monitoring, surgical planning | Brain, spine, soft tissue |
PET-CT Partner Centres
PET-CT Scan Centres in Hyderabad
CION offers PET-CT scans through 4 trusted partner PET-CT centres across Hyderabad, so you can choose the one closest to you. Call 18002028726 and we’ll guide you to the earliest available appointment.
PET-CT Centre — Punjagutta
PET-CT Centre — Himayatnagar
PET-CT Centre — Narayanaguda
These are partner diagnostic centres within the CION network. Toll-free booking: 18002028726.
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What questions should I ask before I book the scan?
- Why has a PET-CT been recommended rather than a CT or MRI for my situation?
- Is this for staging, restaging, or checking how treatment has worked?
- Which tracer will be used, and is it the right one for my cancer type?
- How long will I need to be at the centre in total, including the wait after injection?
- What preparation do I need to follow, and what happens if I get it wrong?
- Who will read the scan — a nuclear medicine physician or a radiologist?
- When will the report be ready, and to whom will it be sent?
- How do I get an appointment to have the results explained to me?
- What exactly does the quoted price include — is the tracer billed separately?
- Does my health insurance cover this, and what documents does the centre need?
- Can I travel home alone after the scan, or do I need someone with me?
What else do I need to know before my scan?
What happens during the uptake period after the injection?
After the injection you wait quietly in a resting room while the tracer distributes through your body. You should not walk around, use your phone, or exercise during this time, because movement affects where the tracer goes and can alter the images. Some centres ask you to sit away from young children and pregnant women as a precaution. The scan itself follows once the uptake period is complete. Ask the centre for their specific timeline when you book, because the total time at the centre varies.
I have diabetes — does that change anything?
Yes. Blood sugar levels affect how the tracer distributes in your body, and an elevated reading on the day may mean the scan cannot go ahead. Tell the booking team you have diabetes when you make the appointment. They will give you specific instructions about medication and meals that morning. These differ between insulin-dependent and non-insulin-dependent diabetes, so do not follow general advice you find online — use only the instructions the centre sends you directly.
Who actually reads the scan, and what are they looking at?
A nuclear medicine physician or a radiologist trained in nuclear medicine reads the PET-CT images and writes the formal report. They look at where the tracer has concentrated, compare it with the anatomical structure shown by the CT component, and note any areas that appear more active than expected. That report goes to your oncologist, who then interprets it alongside your biopsy results, blood tests and full treatment history. Ask the centre before your appointment who the reading doctor will be.
Is the radiation from a PET-CT safe?
A PET-CT involves radiation from both the radiotracer and the CT component. For most cancer patients the clinical value of the information it provides is considered to outweigh the radiation involved, and your oncologist will not recommend a scan without that judgement having been made. If you have concerns, ask your doctor what clinical question the scan is intended to answer and why it was chosen over a lower-radiation option. Scans are not ordered routinely — each one should have a clear indication.
CION does PET-CT in Hyderabad from Rs 10,499 — among the lowest published prices in the city — including an oncologist-reviewed report and a free Rs 950 consultation. Indicative price, as of September 2026.
Explore 88 more Understanding PET-CT, Cost, Booking & Records topics
Understanding PET-CT & When It Is Needed
- Can a PET-CT Scan Be Normal and Cancer Still Be Present?
- Can a PET-CT Scan Detect Cancer Anywhere in the Body?
- Do You Need a Biopsy If the PET-CT Is Positive?
- Do You Need a Doctor's Referral for a PET-CT Scan?
- Does a PET-CT Scan Mean I Have Cancer?
- How Accurate Is a PET-CT Scan?
- How Long Does It Take to Get a PET-CT Appointment?
- Is a PET-CT Scan Useful for Cancer Screening in a Healthy Person?
- PET-CT Scan Terminology: A Plain-English Glossary
- PET-CT When the Primary Cancer Cannot Be Found
- PET-CT for Staging: Working Out How Far Cancer Has Spread
- PET-CT to Check Whether Treatment Is Working
- PET-CT to Look for Cancer Coming Back
- Questions to Ask Before Booking a PET-CT Scan
- What Can a PET-CT Scan Detect — and What It Cannot
- What Is a PET-CT Scan and How Does It Work?
- What Is a Radiotracer and Which One Will I Be Given?
- Who Should Not Have a PET-CT Scan?
- Whole-Body PET-CT vs a Limited or Regional Scan
- Why Has My Doctor Ordered a PET-CT Scan?
Booking, Access & District Logistics
- Booking Without a Doctor's Referral
- Booking a PET-CT for Someone Living Abroad
- Can You Get a PET-CT Scan Closer to Home?
- Getting an Urgent PET-CT Scan
- How Early Should You Arrive for Your Scan?
- How to Book a PET-CT Scan in Hyderabad
- PET-CT for Patients From Nalgonda and Suryapet
- PET-CT for Patients From North Andhra
- PET-CT for Patients Travelling From Karimnagar
- PET-CT for Patients Travelling From Khammam
- PET-CT for Patients Travelling From Nizamabad
- PET-CT for Patients Travelling From Warangal
- Rescheduling or Cancelling a PET-CT Scan
- What Happens If You Miss Your PET-CT Slot?
- Where to Stay Near a PET-CT Centre in Hyderabad
- Why PET-CT Slots Are Fixed and Cannot Be Moved
Choosing a PET-CT Centre & Quality
- AERB Approval and Radiation Safety Licensing
- Comparing Two Quotes: What Is Actually Different?
- Digital PET and Time-of-Flight: What They Actually Change
- Do You Need to Go to the Same Centre for Follow-Up Scans?
- Does an Oncologist-Reviewed Report Actually Help?
- Does the PET-CT Scanner Model Matter?
- Getting a PET-CT at a Government Hospital in Telangana
- How to Choose a PET-CT Centre in Hyderabad
- Questions to Ask a PET-CT Centre Before Booking
- Red Flags When Choosing a Scan Centre
- Same-Day and Walk-In PET-CT Appointments
- Standalone Diagnostic Lab vs a Cancer Centre
- The Four PET-CT Centres in Hyderabad: Which Is Nearest?
- What Makes a PET-CT Report Good?
- What to Do If You Are Unhappy With Your Scan or Report
- Who Reads Your Scan Matters More Than the Machine
PET-CT Cost, Insurance & Schemes
- Ayushman Bharat, CGHS and EHS Coverage for PET-CT
- Cashless vs Reimbursement for a PET-CT Scan
- Comparing PET-CT Quotes: A Checklist Before You Pay
- Does a Cheaper PET-CT Mean a Worse Scan?
- EMI and Payment Options for a PET-CT Scan
- Free and Subsidised PET-CT: Government Options and Waiting Times
- Hidden Charges in PET-CT Scans: What to Check Before You Book
- Is PET-CT Covered Under Aarogyasri?
- Is PET-CT Worth the Cost Compared With a CT Scan?
- Is a PET-CT Scan Covered by Health Insurance in India?
- PET-CT Cost for Non-Cancer Conditions
- PET-CT Cost vs CT, MRI and Bone Scan in Hyderabad
- PET-CT Scan Cost in Hyderabad: The Full Price List
- PSMA, DOTATATE and FAPI PET-CT Costs in Hyderabad
- Paying for a PET-CT Scan From Abroad
- Planning the Cost of Your Cancer Diagnostics
- Repeat PET-CT Scans: What Each Follow-Up Costs
- Value for Money vs Deep Detect: Which PET-CT Should You Choose?
- What Does the Free Consultation With Your Scan Include?
- What Is Included in a PET-CT Scan Price — and What Is Not
- Why Do PET-CT Prices Vary So Much Between Centres?
- Why PET-CT Insurance Claims Get Rejected
Reports, Records & Second Opinions
- Comparing a New Scan With Your Previous One
- Do You Need a Repeat Scan or Just a Re-Read?
- Errors and Corrections in Scan Reports
- Getting a Second Opinion on Your PET-CT Report
- How to Get a Digital Copy of Your PET-CT Images
- Keeping Your Scan Records for the Long Term
- Sharing Your Scan With a Doctor Abroad
- Taking Your PET-CT Report to Another Hospital
- Understanding the Nuclear Medicine Specialist's Role
- What You Receive: Report, Images, CD and DICOM
- What to Do If the Report Says Something You Do Not Understand
- When Is a Second Opinion on a Scan Worth It?
- When Will You Get Your PET-CT Report?
- Why Two Reports on the Same Scan Can Differ
Your next step
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Common questions
Frequently asked questions
Can I eat or drink before a PET-CT scan?
You will usually be asked to fast before the scan. The most common tracer is a form of glucose, and eating raises your blood sugar in a way that reduces image quality. Water is typically allowed. Exact instructions vary by centre and by tracer, so ask for written preparation steps when you book rather than relying on general advice. If you have diabetes, you will receive separate medication instructions — do not change anything until you have those in writing.
Who reads a PET-CT scan and writes the report?
A nuclear medicine physician or a radiologist with nuclear medicine training reads the scan and writes the formal report. At CION, PET-CT scans are coordinated through partner imaging centres, and the report is produced by the reading specialist at that centre. Your oncologist then interprets the report alongside your full treatment history. When you book, ask who will be reading your scan and how your oncologist can contact them if there are questions about the findings.
How long does it take to get a PET-CT report?
Turnaround times vary by centre — some produce a report the same day, others take a few working days. Confirm this when you book, and ask to whom the report will be sent. It typically goes to your referring oncologist rather than directly to you. Plan your follow-up appointment with your oncologist for after the report is expected, so you are not waiting without a timeline. If you have not heard within the timeframe given, call your oncologist's team.
Is a PET-CT scan covered by health insurance in India?
Many policies cover PET-CT when referred by an oncologist for a clear clinical reason, but coverage depends on your specific policy and whether the centre is on your insurer's network. Call your insurer before you book with the scan name, the referring indication, and the centre details. Ask whether pre-authorisation is available and what documents are required. Some policies have a minimum sum insured before PET-CT is covered — check this before you commit to the booking.
Are all PET-CT tracers the same?
No. The most commonly used tracer is FDG, but certain cancer types are better imaged with different compounds. Some prostate cancers and neuroendocrine tumours, for example, do not show clearly on FDG and require specific tracers. Your oncologist should have specified which tracer is needed on the referral. If no tracer is mentioned, ask before you book — not every centre carries every tracer, and using the wrong one means the scan will not answer the question it was ordered to answer.
What do I do if the report mentions something my oncologist did not expect?
PET-CT reports sometimes describe findings outside the area specifically asked about. It is your oncologist's job to review the full report, put each finding in context, and explain whether it needs action. If something in the report worries you before your follow-up, call the oncology team and ask whether it is urgent or can wait for your scheduled appointment. Do not try to interpret the report yourself using general online searches — the same finding can mean very different things in different clinical situations.