Scan day
Can You Have Sedation for — a PET-CT Scan?
Lying still in an unfamiliar machine for an extended time is genuinely difficult for some people. Sedation is available for PET-CT — for children, for people with claustrophobia, and for people who cannot cooperate without it — but it must be arranged before your appointment, not on the day.
Medically reviewed by Dr. C. Raghavendra Reddy, Medical Oncologist, MBBS (Gold Medal) · DNB · DM (Medical Oncology, Gold Medal) · Last reviewed September 2026
- It needs advance notice — Sedation cannot be added on the day. An anaesthetist or sedation nurse must be arranged when the scan is booked.
- The scan result is not affected — Sedation helps you stay still. The radiotracer still works the same way, and image quality is not compromised.
- You need someone with you — A responsible adult must accompany you and take you home. You cannot drive or travel alone after sedation.
- Children are routinely offered it — Paediatric PET-CT commonly uses sedation or light anaesthesia, planned with a paediatric anaesthetist.
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Sedation for PET-CT is available for children, people with claustrophobia, and those who cannot stay still long enough for the scan. It needs to be arranged in advance, requires a longer appointment, and someone must accompany you home afterwards. The scan result is not affected.
A whole-body PET-CT at CION costs from Rs 10,499 — among the lowest published prices in Hyderabad. Indicative price, as of September 2026.
What happens at a sedated PET-CT appointment, in order?
Request sedation before the scan is booked
Tell your oncologist or referring doctor that you need sedation. This must happen before the appointment is made, so the imaging centre can arrange an anaesthetist or sedation nurse.
Attend a pre-sedation assessment if required
You may be asked to come in before scan day for a brief review of your medical history, current medicines, and weight. For children, a paediatric anaesthetist is usually involved at this stage.
Follow extended fasting instructions
You will be asked to fast for longer than a standard PET-CT patient because of the sedation. Your team will give you specific instructions. Do not adjust insulin or diabetes medicines without asking first.
Arrive early on scan day with your escort
Allow extra time for paperwork, cannula placement, and pre-sedation checks. The responsible adult who will take you home must be present for the entire appointment.
Receive the radiotracer injection
The FDG injection is given through a small cannula in your arm. You then rest quietly for the uptake period. Sedation may be given at this point or just before the scan, depending on your situation.
Have the scan under sedation
Once you are still, the scan runs in the same way as a standard PET-CT. The scanner is quieter than an MRI. The sedation handles the stillness that the scan requires.
Rest and recover before leaving
You will be monitored until the sedation has cleared enough for you to travel safely. Recovery time varies between patients. You cannot drive or travel home alone.
Does sedation change what the scan shows?
Sedation does not prevent the radiotracer from working. The FDG still travels to tissues in the usual way, and the scanner detects it the same way it would in an unsedated patient.
Some sedative medicines can affect how active the brain appears on the scan. The reporting radiologist takes this into account when a sedated brain scan is reviewed. For most body scans, this has no meaningful effect on the result.
The most important factor for image quality is that you stay completely still. Sedation achieves this more reliably than asking an anxious or uncooperative patient to try. For patients who need it, a sedated scan typically produces clearer images than an unsedated scan where movement occurred.
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 should you tell your team before booking a sedated PET-CT?
- Any allergy to medicines, sedatives, or latex
- All medicines you currently take — including herbal and traditional remedies
- Whether you have obstructive sleep apnoea or any breathing condition
- Whether you or your child has had a reaction to sedation or anaesthesia before
- Whether you have diabetes — fasting and blood sugar management are more complex with sedation
- Your weight and, for children, the child's age and weight
- Who will accompany you — a named responsible adult must be confirmed before sedation is agreed
Who is sedation typically arranged for?
| Patient group | Sedation usually offered | What the team considers |
|---|---|---|
| Children who cannot cooperate with lying still | Yes, routinely | Age, weight, temperament, and ability to follow instructions for the required time |
| Adults with severe claustrophobia | Often, after discussing other options | Whether a mild anxiolytic tablet beforehand might be enough |
| People with dementia or cognitive impairment | Yes, when stillness is not reliably possible | Degree of impairment and general medical fitness for sedation |
| Adults with movement disorders | Discussed case by case | Whether involuntary movement would significantly affect image quality |
| Adults with mild or moderate anxiety | Not usually | Explanation, reassurance, and positioning adjustments are tried first |
Did you know?
A PET-CT scan requires you to lie completely still for an extended period. Even small, repeated movements can blur the images enough to affect what the scan shows.
For patients who cannot achieve this without help, a well-managed sedated scan typically produces clearer images than an unsedated scan interrupted by movement — making sedation a clinical quality decision as much as a comfort one.
Source: SNMMI Practice Guideline for Sedation and Analgesia in Nuclear Medicine Procedures
Book a PET-CT at CION from Rs 10,499 — among the lowest published prices in Hyderabad — with an oncologist-reviewed report and a free Rs 950 consultation, across 4 partner centres. Indicative price, as of September 2026.
Explore 64 more Preparing For and Having Your Scan Safely topics
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- Preparing a Wheelchair-Bound or Bedridden Patient
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Radiation Safety & After-Scan Precautions
- Are You Radioactive After a PET-CT Scan?
- Being Around Pregnant Women After a PET-CT Scan
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- Cumulative Radiation From Repeated Scans
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- Is the Radiation From a PET-CT Scan Dangerous?
- PET-CT Radiation Compared With CT, X-Ray and Natural Background
- Radiation Safety at Home After Your Scan: A Family Checklist
- Radiation Safety for Staff and Attendants at the Centre
- Simple Steps to Clear the Tracer Faster
- Travelling Home After a PET-CT Scan: Public Transport and Airports
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Common questions
Frequently asked questions
Can an adult ask for sedation just because they are nervous?
You can ask, and your team will take it seriously. For most adults with mild anxiety, the team starts with explanation, positioning, and reassurance — many people who feel nervous beforehand manage well once the scan begins and they understand what to expect. If anxiety is more severe, a mild anxiolytic tablet by mouth may be offered before full sedation is considered. Full sedation is typically reserved for patients who genuinely cannot stay still enough for a usable scan, because it requires an anaesthetist and a longer appointment. Tell your team before scan day so they can plan the right approach for you.
Does my child definitely need sedation for a PET-CT?
Not always. Older children and some younger children can cooperate well with preparation and distraction. Whether sedation is needed depends on the child's age, temperament, and ability to stay still for the required time. Your doctor and the imaging team will assess this before the scan is booked. When sedation is planned for a child, a paediatric anaesthetist is usually involved, which requires additional notice and planning.
How much longer does a sedated PET-CT appointment take?
Significantly longer than a standard appointment. Extra time is needed before the scan for pre-sedation checks, cannula placement, and waiting for the medicine to take effect, and after the scan for recovery before you can leave. Recovery time varies between patients. Plan for the day to take considerably longer than the scan itself, and confirm the expected duration with the imaging centre when you book.
Is it a general anaesthetic or something lighter?
Usually lighter than a general anaesthetic. Most sedated PET-CT scans use conscious or moderate sedation — you are relaxed and drowsy but not fully unconscious, and can still follow simple instructions. General anaesthesia is occasionally used for young children or patients with very high needs, and in those cases a paediatric anaesthetist manages the airway throughout. The specific approach depends on your situation and what the anaesthetist recommends after assessment.
Can I have sedation for PET-CT if I am diabetic?
Yes, but it requires careful planning. PET-CT already requires fasting and blood sugar control, and sedation extends the fasting period, making diabetes management more complex. Tell your team you are diabetic when requesting the sedated scan. They will give you specific instructions about your insulin or diabetes medicines and may check your blood sugar before and during the appointment. Do not adjust your own medicines without asking — the team needs to plan this with you in advance.