Positron Emission Tomography (PET)

Positron Emission Tomography (PET) is a medical imaging technique that allows us to see what is happening in the body at a cellular level. The scan makes use of radiopharmaceuticals such as Fluorodeoxyglucose (FDG), which once injected into a patient allows our doctors to detect abnormalities in cellular activity (eg cancer cells). Computed Tomography (CT) Scans uses x-rays and software algorithms to take detailed images of sections of the body. CT scans enable visualization of body’s organs, bones and tissues in detail.

The PET/CT scanner at iScan enables the fusion of these two advanced imaging modalities and has technologies to enable higher resolution images, with lower dose and/or scan times. The acquired PET image data allow us to track cellular changes while CT images provide the detailed anatomical information on the location and size of tumors. This combined information provides more insight to the progression of the disease in a patient.

PET/CT scans at iScan are reviewed, correlated and reported by both a CT/MRI board certified Radiologist and a board-certified Nuclear Medicine Physician.

Benefits of PET/CT

Molecular imaging is part of standard care for many types of cancer, providing unique information to assist in the detection, diagnosis, evaluation, treatment and management of cancer.

Diagnose and Determine the Stage of Cancers

  • Molecular changes occur earlier as compared with anatomical changes. PET scans help in the early detection and treatment of cancer

Positive Influence on Cancer Management

  • PET scans lead to better and more informed decision making processes as it helps physicians choose the most appropriate treatment plan for their patients – be it chemotherapy, surgery, radiotherapy or other treatments
  • Decreases the number of unnecessary scans, tests and surgeries

Treatment Response Evaluation

  • Helps provide an early and accurate way to assess whether chemotherapy or other treatments are working as intended
  • Allows rapid clinical evaluation of treatment effectiveness to allow earlier change in management to more effective treatments

CT

PET

PET/CT Fusion

Gastrohepatic Lymphnode, ill defined in CT, but clearly visualized in PET with SUV of 7.6.

Technology Used

Our PET/CT Scanner uses the latest technologies to improve cancer diagnosis.

  • Time of Flight

    Our system is equipped with Time of Flight (ToF) technology that enables better mass / lesion detection, enabling physicians to identify smaller lesions earlier.

  • Optimum Image Quality

    Leading to more accurate disease staging and aiding physicians in determining more effective and personalized treatments

  • Lower Dose

    Our PET/CT System is equipped with dose reduction technologies that can help reduce CT dose as much as 60%

Before the Examination 

Before the PET scan, please advise our technologists of the following:

  1. If you have any of the following conditions:
    • Diabetics
    • Renal Disease
    • Thyroid problem
    • Severe Allergies (Drug/medicine, food and/or CT contrast)
    • Claustrophobia (Fear of enclosed spaces)
    • Pregnant or breastfeeding
    • Asthma
  2. Creatinine results is above threshold
  3. Pacemaker or medical devices
  4. Need to be sedated during the scan (if with uncontrolled tremors, seizure, pain, restlessness, claustrophobia, or any condition that render you unable to lie down firmly)
  5. For female patients if you are breastfeeding or if you are possibly pregnant

During the Examination

  • Upon arriving at iScan for your PET/CT scan, you will undergo an initial registration process. After which, you will be brought to individual patient waiting rooms. iScan’s Molecular Imaging department was designed from the ground up with patient comfort in mind. The patient waiting rooms are spacious and comfortable and aim to provide a relaxing environment while you undergo your procedure.
  • Once settled, iScan’s care team will check your blood sugar and a radiotracer will be injected through an IV line. The radiotracer does not cause any side effects or pain. After the uptake of the radiotracer, you will be prepared for your scan.
  • During the scan, you will be asked to lie on your back on a platform which will enter a long tube. You will need to remain still during the test.
  • The whole procedure, from registration to the completion of the scan will take around 2-3 hours.

Results are available the next business day.

Preparation for a PET Scan will vary depending on the type of the procedure and are essential to the quality of the scan. 

Please check with us on the complete preparations for your procedure when you schedule your appointment. For women, as a radiopharmaceutical will be injected into your body, please notify the technologist if you are pregnant or there is a chance you may be, or if you are nursing. 

  • FDG (fluorodeoxyglucose) whole body PET/CT
  • Choline PET/CT