PET/CT Scan: A New World of Diagnosing and Treating Patients
Feb 23, 2015, 9:30:00 PM
A PET/CT combines two scan techniques in one examination - a PET scan and a traditional CT scan, which is fused using advanced imaging technology and computer software. While some of the other procedures use x-rays or sound waves to create images, a PET scan uses gamma radiation from radioactive tracers to generate 3-dimensional, color images of the functional processes within the human body to detect diseases. By combining these two scanning technologies, a PET/CT scan enables physicians to identify, treat and monitor these diseases earlier and more accurately.
A small amount of radioactive substance or radiotracer similar to glucose, the F 18 fluorodeoxyglucose (FDG) is injected to the patient before the scan. The tracer gives off particles called positrons that release a type of radiation known as gamma rays , which can be detected by the PET scanner. Because cancer cells tend to use more glucose than normal cells, PET scans can help detect the high metabolic activity of these cancer cells to produce images of areas inside the body where glucose is excessively used. These images provide diagnostic information to physicians in treatment planning.
The procedure is painless and takes around 25-30 minutes and does not have any side effects. The radioactive glucose used in nuclear medicine imaging decays quickly and is eliminated through urine.
Preparing for a PET/CT scan:
Before the scan
- Do not eat or drink for at least 4-6 hours before the scan.
- Wear warm comfortable clothing. Avoid wearing jewelry or clothes with metal fasteners or zippers.
- Prescribed medications are fine to be taken on empty stomach.
- Insulin or oral agents used to control diabetes should not be taken within four hours of the PET/CT scan.
- Avoid strenuous exercises on the previous day and on the day of the scan.
After the scan
- Drink plenty of fluids.
- Urinate as often as necessary and empty your bladder frequently for 24 to 48 hours.
- A radiologist will review the images and send a formal report to the patient’s physician within 48 hours.
Today, nuclear medicine imaging offers procedures that are essential in many medical specialties, from pediatrics to cardiology and neurology to oncology. It is used to diagnose and manage the treatment of cancer, heart disease, brain disorders such as Alzheimer’s and Parkinson’s disease, gastrointestinal disorders, lung disorders, bone disorders as well as kidney and thyroid disorders.
It is essential to tell your doctor if you are pregnant or breastfeeding before undergoing a PET scan because of radiation exposure.
Related Articles
High Blood Pressure and Your Health
May 20, 2019, 8:30:00 AM
Glucose Meters are Your Ally
Jul 11, 2018, 6:30:00 PM
Chemical Peel: Discover Radiant, Youthful Skin
Jun 26, 2018, 6:30:00 AM
Scoliosis In Children: How Corrective Surgery Can Transform Lives
Jun 25, 2018, 6:00:00 AM
Nonalcoholic Fatty Liver Disease (NAFLD): A Growing Epidemic in Kerala
Jun 12, 2018, 6:00:00 AM
NIPAH VIRUS INFECTION: BE INFORMED, BE SAFE
May 25, 2018, 6:00:00 AM
World Health Day 2018
Apr 6, 2018, 6:00:00 AM
Understanding Autism Helps Early Detection
Mar 29, 2018, 5:30:00 AM
Have The Right Amount Of Carbohydrates And Fats To Keep Your Heart Healthy
Mar 20, 2018, 5:30:00 AM
Cancer In The Elderly: Adopting A Holistic Approach
Mar 14, 2018, 5:30:00 AM
Women And Kidney Diseases
Mar 7, 2018, 5:30:00 AM
PCOS IN ADOLESCENTS : AN ENIGMA
Feb 15, 2018, 5:30:00 AM
Epilepsy: The Reality
Feb 9, 2018, 5:30:00 AM
Cancer- no more a crab!
Feb 2, 2018, 5:30:00 AM
Pulmonary Rehabilitation: Helping People With Lung Diseases Live An Active Life
Jan 17, 2018, 3:00:00 PM
Obesity In Indians
Nov 24, 2017, 2:00:00 PM
Diabetes- What We Should Know?
Nov 14, 2017, 2:00:00 PM
Pneumonia: What You Should Know?
Nov 11, 2017, 1:30:00 PM
9 Ways To Prevent Neck Pain
Oct 17, 2017, 12:30:00 PM
The Simple Step To Good Health
Oct 12, 2017, 12:30:00 PM
Angioplasty for Chronic Total Occlusions (CTOs)
Sep 29, 2017, 12:10:00 PM
Understanding Alzheimers disease
Sep 21, 2017, 12:00:00 AM
TAKE A MINUTE, CHANGE A LIFE – SUICIDE PREVENTION AND YOU
Sep 9, 2017, 12:00:00 PM
Polycystic Ovarian Disease
Aug 30, 2017, 12:00:00 PM
Cancer Of The Cervix And How To Prevent It
Aug 19, 2017, 12:00:00 PM
Key Hole Spine Surgery: Making Spine Surgery Easier
Jul 28, 2017, 12:00:00 PM
Vitiligo: What You Should Know
Jun 29, 2017, 12:00:00 PM
Kidney Transplantation - A Second Chance At Life
Jun 27, 2017, 12:00:00 PM
Dialysis: A Life Sustaining Treatment For End Stage Kidney Failure Patients
Jun 19, 2017, 12:00:00 AM
Understanding Carotid Endarterectomy
Jun 13, 2017, 12:00:00 PM
Laparoscopic Surgery: What To Expect
Jun 2, 2017, 12:00:00 PM
Endoscopic Skull Base Surgery
Jun 1, 2017, 12:00:00 PM
Back Pain In Children: Never Ignore The Problem
May 31, 2017, 12:00:00 PM
The Diabetic Foot: A Surgical Perspective
May 30, 2017, 12:00:00 PM
Chronic Kidney Disease: The Silent Killer
Apr 20, 2017, 12:00:00 PM
Laser Surgery: The Effective Way To Treat Prostate Enlargement
Apr 19, 2017, 12:00:00 PM
Male Infertility: What You Should Know
Apr 5, 2017, 11:30:00 AM
Prostate Cancer: Ten Facts You Should Know
Apr 4, 2017, 11:30:00 AM
Walking on metal knees
Feb 22, 2017, 10:30:00 AM
Are You Sleeping Well?
Feb 21, 2017, 10:00:00 AM
Complex Coronary Angioplasty
Feb 20, 2017, 10:30:00 AM
Good Mental Health: An Overview
Feb 15, 2017, 10:30:00 AM
How does ‘bad’ cholesterol affect brain function?
Sep 6, 2016, 10:30:00 AM
Some Types of Blood Pressure Medications
Sep 6, 2016, 10:00:00 AM
IBD: Do you know the signs and symptoms?
May 31, 2016, 10:00:00 AM
Colorectal Cancer: What You Should Know
May 26, 2016, 10:00:00 AM
Healthy tips for your heart’s sake
Mar 17, 2016, 10:12:00 AM
Adding years to life after a coronary artery bypass surgery
Mar 10, 2016, 10:09:00 AM
What you need to know about osteoarthritis
Mar 4, 2016, 10:00:00 AM
Tetanus : what you should know
Mar 25, 2015, 10:00:00 AM
Stomach Cancer : Be Informed
Mar 19, 2015, 10:00:00 AM
Depression : Overcome it!
Mar 17, 2015, 10:00:00 AM
Smile healthy
Mar 11, 2015, 10:00:00 AM
Chicken Pox : How to manage the infection
Mar 9, 2015, 9:30:00 AM
Gastric Ulceration - Causes, Risk Factors and Symptoms
Mar 2, 2015, 9:30:00 AM
Lung Cancer: Symptoms, Causes and Treatments
Feb 26, 2015, 9:30:00 PM
Neck Pain: Symptoms, Causes and Treatment
Feb 25, 2015, 9:21:00 AM
All You Need To Know About Cervical Spondylosis
Feb 18, 2015, 9:30:00 PM
Why do Panic Attacks Happen?
Feb 17, 2015, 6:30:00 PM
Malnutrition : facts you should know
Feb 12, 2015, 6:30:00 PM
Advanced medical linear accelerators help fight cancer faster, smarter and with precision
Feb 4, 2015, 6:30:00 PM
February 4: World Cancer Day
Feb 3, 2015, 9:00:00 PM
Breast Cancer: Symptoms, Causes and Risk Factors
Feb 2, 2015, 8:51:00 AM
Bells Palsy: Symptoms, Causes and Risk Factors
Jan 26, 2015, 6:30:00 PM
Changing The Experience Of Surgery
Jan 23, 2015, 8:34:00 AM
Tuberculosis: Causes, Symptoms and Prevention
Jan 21, 2015, 8:31:00 AM
Health Tips for Pregnant Women
Jan 16, 2015, 7:34:00 AM
Tips to tackle burns instantly and minimize scarring
Jan 12, 2015, 7:27:00 AM
Dengue : Stay Protected
Jan 7, 2015, 6:47:00 AM
Rabies: Causes, Symptoms and Protection
Jan 5, 2015, 6:46:00 AM
Dyslexia Guide for Parents and Teachers
Dec 30, 2014, 6:45:00 AM
Body Dysmorphic Disorder: Signs, Triggers and Remedies
Dec 22, 2014, 6:44:00 AM
Lower back pain: Causes and Symptoms
Dec 19, 2014, 6:43:00 AM
Bronchitis: Symptoms, Causes and Precautions
Dec 16, 2014, 6:41:00 AM
How To Deal With Allergies
Dec 11, 2014, 6:40:00 AM
Does Prolonged Cold Indicate A Sinus Infection?
Dec 5, 2014, 6:30:00 AM
What to expect from a Knee Replacement Treatment?
Dec 3, 2014, 6:29:00 AM
World AIDS Day - December 1
Dec 1, 2014, 6:28:00 AM
Malaria – Symptoms, Causes and Facts
Nov 27, 2014, 6:27:00 AM
Keep your home germ-free
Nov 25, 2014, 6:26:00 AM
Tackling Dandruff
Nov 19, 2014, 6:24:00 AM
Tips to stay healthy during winters
Nov 17, 2014, 6:22:00 AM
Healthy living and Diabetes
Nov 14, 2014, 6:20:00 AM
Breast-feeding reduces the risk of diabetes in children
Nov 12, 2014, 6:19:00 AM
Schizophrenia : Symptoms, Causes and Myths
Nov 10, 2014, 6:18:00 AM
Asthma : Causes, Symptoms & Self-Help Tips
Nov 4, 2014, 6:17:00 AM
Vaccination : keep your child healthy
Oct 31, 2014, 5:58:00 AM
Take care - children tend to swallow dangerous objects!
Oct 28, 2014, 5:39:00 AM
5 signs of ear infection in children
Oct 25, 2014, 5:38:00 AM
Celebrate a healthy and safe Diwali!
Oct 22, 2014, 5:36:00 AM
October 20 : World Osteoporosis Day
Oct 20, 2014, 5:35:00 AM
How to avoid feeling sleepy in the afternoon.
Oct 17, 2014, 5:05:00 AM
A great day begins with a healthy breakfast
Oct 15, 2014, 5:04:00 AM
World Arthritis Day: Get a free check-up* at Aster Medcity
Oct 11, 2014, 6:30:00 PM
Understanding ADHD (Attention Deficit Hyperactivity Disorder)
Oct 10, 2014, 11:11:00 AM
Protect your hair against sun damage
Oct 7, 2014, 11:03:00 AM
Migraine – Symptoms, Triggers and Treatment
Oct 1, 2014, 11:02:00 AM
Call Aster Heartline: Start caring for your heart
Sep 29, 2014, 11:01:00 AM
Only you can take care of yourself.
Sep 24, 2014, 11:00:00 AM
Are demands of modern life making women unhealthier?
Sep 22, 2014, 10:59:00 AM
kidney-stones-causes-and-remedies
Sep 19, 2014, 10:51:00 AM
Hepatitis A and B – Symptoms, Transmission and Prevention
Sep 17, 2014, 10:50:00 AM
Sweet fact: Chocolates are good for you.
Sep 15, 2014, 10:49:00 AM
Too strict on your kids? They can become obese!
Sep 10, 2014, 10:48:00 AM
Are you a diabetic? Make sure you don't fall prey to these 7 problems.
Sep 8, 2014, 6:41:00 AM
7 Fertility Myths Couples Need to Stop Believing
Sep 5, 2014, 6:40:00 AM
May your eyes live on.
Aug 27, 2014, 6:39:00 AM
10 myths on eye donation: let’s see the reality!
Aug 8, 2014, 6:38:00 AM
