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You can still have cancer if a PET scan is negative. That’s because some types of tumors are harder for PET scans to detect.
Yes, there are definitely cancers that can not be detected on a PET scan for various reasons. A negative PET scan does not mean you don’t have cancer. It does not mean that there is no recurrence of cancer if you already have cancer.
Life Extension Magazine®. PET Scans: Understanding The Nature Of Cancer. Cancer patients and their doctors now have access to a superior imaging technology in PET scans. Dr. Richard Black seeks to establish a standardized system for accurate interpretation of PET scans, thereby saving lives.
For your PET scan, a radioactive drug called a tracer will be injected into a vein. Because the amount of radiation you're exposed to in the tracer is small, the risk of negative effects from the radiation is low. But the tracer might: Expose your unborn baby to radiation if you are pregnant.
A positron emission tomography (PET) scan is an imaging test that produces images of your organs and tissues at work. The test uses a safe, injectable radioactive chemical called a radiotracer and a device called a PET scanner.
A positron emission tomography (PET) scan uses a tracer with low levels of radiation to find places in your body where cells are unusually active—which can mean they're cancerous. A PET scan can also show whether cancer has spread and to where.
PET-CT requires specific patient preparation and understanding of potential false positive and false negative test results depending on whether PET-CT is used for diagnosing, initial staging, or post-treatment staging of different head and neck cancer subtypes. Objectives: