Doctor insights on:
What Can A Pet Scan Show
What is the question: Currently pet scans are widely use for evaluation of glucose metabolism in the body. In oncology, is use to for initial metabolic characterization of tumors, metastases as well as for treatment response and surveillance. In cardiology, pet scans are use to assess heart ischemia and viability and in neurology the study is use to evaluate cognitive disorders, epilepsy and brain tumors ...Read moreGet help from a doctor now ›
Pet scans most often use a radioactive form of glucose, the energy source for most of the cells in our bodies. The pet scanner can detect and measure how much of the radioactive glucose analog, f-18 fdg, is in a particular organ or region. The areas using more glucose are hyper metabolic and generally more worrisome. Our brains and sometimes hearts prefer glucose as food, making ...Read more
Glucose: Pet scan relies on the theory that tumors utilize a significant amount of glucose. Many different types of cancer can show up on pet scan but certain types of cancer are much more FDG avid. Low grade tumors usually have much less uptake than high grade tumors. In addition, mucinous neoplasms often do not have much FDG uptake. Small size tumors or micrometastases also may not show up on pet. ...Read moreGet help from a doctor now ›
Why would a pet scan show hyperactivity in an area in the colin where i had a polyp removed 2 months prior?
Possibly: Pet/ct scans with FDG localize areas with increased glucose metabolism. Although this can be some types of cancer, it also can be due to infection, inflammation and healing wounds. ...Read moreGet help from a doctor now ›
My dad is 53 years old and in good shape. He was diagnosed with stage 4 secondary liver cancer; the primary is still unknown. He has had a CT scan, an endoscopy, and a colonoscopy done. Will a pet scan show something more?
Possibly: More important is the pathology. We rely on pathology and the immunochemistry. The pet may be helpful but sometimes we do not find a primary. This is called a cancer of unknown primary. ...Read moreGet help from a doctor now ›
Can nuerontin cause high suv on a pet scan had breast caner 5 years ago, got a ouple of lumps on my nek, took a pet scan, show lymph nodes under arms, groin, chest, foreman of winslow, and others showed high suv, biopsy from under arm was neg. For lymphom
Neurontin : Neurontin in very rare circumstances can in fact cause lymphadenopathy (enlarged lymph nodes), but given your history I am very glad that you had a biopsy. Please discuss this carefully with your oncologist given your history. I will wish the best for you. ...Read moreGet help from a doctor now ›
Eyes to thighs: Even though the study is called whole body pet/ct, most often the image acquisition is from the eyes to thighs. The parts of the body that are included varies from center to center and also depends on the patient's symptoms and cancer histopathology. For e.g. Melanomas can metastasize anywhere in the body and thus real whole body scans are obtained (skull vertex to toes). ...Read moreGet help from a doctor now ›
Glucose metabolism: PET with F18 FDG, glucose metabolite, determines glucose metabolism of normal and abnormal structures.For example, sometimes lymph nodes are visualized on CT and do no know whether benign or malignant. In general malignant lesions are more active and have higher metabolism of glucose ...Read moreGet help from a doctor now ›
Hard to say: Pet scan is most appropriate for detecting liver nodules 1cm or bigger. Those that are smaller should be evaluated with different kind of tests. I would recommend a liver MRI with Eovist contrast. Eovist is not the standard contrast and needs to be specifically requested. If the MRI does not give a definite answer, the repeating the scan in 3 months is another option to see if they're growing. ...Read moreGet help from a doctor now ›
Post op seminoma, in r testicle. Pet scan done for suspecious nodes. Pet scan result shows negative for any abnormalility. This means no seminoma?
Surveillance: A negative pet scan means there is no accumulation of cancer cells large enough to be discernible by the pet scanner. There is a resolution limit of about 7mm in size to be seen, some are better now. I am not trying to scare you, but your doctor i'm sure will continue to caution you and continue surveillance for a period of time safe to say you are cancer-free. ...Read moreGet help from a doctor now ›
If it is included: The drug given goes everywhere in the body, including the brain. How much of the body that is imaged depends on the disease being looked for. For lymphoma, scans start at the base of the brain and end at the upper thighs. For head and neck cancer, the scan is from the top of the head to the upper thighs. Melanoma includes the whole body, and seizures is just of the brain. ...Read moreGet help from a doctor now ›
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