Patients are frequently referred to as a PET scan after completing their CT scan. The reason is simple PET scans better detect the problem when compared to CT scan. These are common scans suggested to patients and are an excellent way to detect hidden diseases. Timely tests act as a blessing for the patients as early detection and treatment of the underlying disease is possible. People get concerned when a PET test is advised by the doctor; this is because the patients are not much aware of the tests. Let us clear doubts surrounding the mind of the people and the patient.
- What is a PET-CT scan?
Numerous medical practitioners recommend both scans to get a better understanding of the patient’s body. PET-CT scan combines both the tests and gives detailed information about the person’s body. CT scan is a series of X-rays of the whole body which creates a 3-dimensional picture. PET scan is a radioactive imaging technique that reveals the abnormal activity of cells in specific areas of the body.
- a) The radiology department is the concerned department
- b) The one who operates the scanner is called a radiographer
- c) The tests usually take 30 and 60 minutes
- d) Cancer hospitals tend to have these departments
- e) Early detection of cancer is possible with the test
- f) PET Scanner means positron emission tomography scanner
- g) CT means x-ray computed tomography
- What is the relation between PET-CT scan and Cancer?
Cancer is one of the most threatening diseases and the chances of survival depend on the stage in which it is detected and diagnosed. PET-CT scans are referred to patients who the doctor considers has abnormal cell activity or troubles not easily identifiable. There is a deep-rooted connection between the disease and test; let us find out how it is helpful:
- a) In diagnosing cancer
- b) Find out the spread or stage of the cancer
- c) Whether surgery is needed to remove the cancer
- d) Deciding the best treatment for cancer
- e) For cancer patients, it is a test to monitor whether cancer has completely recovered or not
- f) Plan ahead for the radiotherapy treatment
- g) If any tissue is active cancer or not
- What is the preparation a patient has to do for PET-CT Scan?
Most PET-CT tests have a similar procedure of FDG imaging and the patients are instructed in the same way. Whether the patient goes to pet ct scan center in Bangalore or in any other part of the country; the procedure remains identical and the patients are advised not to eat for few hours prior to the test. The below procedure will make it clearer for the people on how it works.
- a) The patients are instructed to fast for at least 4-6 hours before the exam
- b) The patient lies for about 15 minutes to relax the muscular activities. This abnormal metabolism is done before the test.
- c) Intravenous bolus injection dose is pushed into the vein of the forbearing. The dose consists of 2-FDG or 3-FDG and the dosage varies from 3.7 to 7.4 megabecquerels.
- d) After a period of one to two hours, the patient lies in supine position into the PET-CT machine.
- e) Head moves first with an automatic bed and then the main region of interest follows with the x-ray tube being placed
- f) The radiographer or the operator utilizes computer console for further examination. The scanning parameters are set and image acquisition takes place. These processes do not need any human intervention.
- g) CT gantry and x-ray tomogram automatically acquire the imaging
- h) The patient moves automatically from PET gantry to CT gantry and the slices are acquired
- i) The patient is now allowed to leave the machine and the PET-CT software does the rest. This involves the reconstruction and alignment of PET and CT images.
- j) The whole acquisition process further may require any time ranging from a few minutes to 40-45 minutes.
The full form of FDG is fludeoxyglucose and acts as an important concentration to carry out the proper scan.
- Where are PET-CT scans used apart from a cancer diagnosis?
The test is not limited to only cancer patients; there are other numerous uses of the scanner. Be sure to visit the best pet ct scan center in Bangalore or any location you stay because they usually use the devices to best effect. The tool is heavily used for below diagnosis:
- Clinical Oncology: The diagnosis, staging, and monitoring of the actual disease. Cancer is of many types and the diagnosis of brain, liver, kidney, lymphoma and lung cancer is more effectively detected with the device.
- Neuroimaging: Patients with conditions related to Neurology, neuropsychology, psychiatry, stereotactic surgery, and radiosurgery get great help with the PET imaging guidance. There are various diseases which can be detected and diagnosed with the help of PET-Ct scanners. To name a few below; Alzheimer’s disease, schizophrenia, mood disorders, seizure focus, psychiatric conditions, psychological disorders, and brain activity related troubles.
- Cardiology: PET results are used for diseases related to atherosclerosis, cardiology and vascular. There are people who have extreme chances of getting a stroke and PET imaging assists beforehand in treating the same.
- Infectious diseases: There is a rapid increase in bacterial infections in all parts of the world. This procedure makes it easier to ascertain the cause through molecular imaging.
- Small animal imaging and Pharmacokinetics: Pre-clinical trials meant killing an animal in older times but now the imaging data is used for reception of drugs and pharmaceutical research.
- Musculoskeletal Imaging: The human body is made of deep-lying muscles and this technology makes it feasible to study the activation data of muscles. PET scan techniques are better in comparison to other tools.
Don’t feel nervous if the doctor directs you to go for a PET-CT scan but make sure to choose the best pet ct scan center in Bangalore or the place you reside in.