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Doctor insights on: Pet Scan Accuracy Cancer Detection

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Could a pet scan detect ovarian cancer?

Could a pet scan detect ovarian cancer?

Possibly: If tumor metabolically active will pick up isotope f18 FDG , analog of glucose. Imaging with pet ct will detect abnormality. Most malignant tumors are active, but not all. ...Read more

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Dr. Barry Rosen
4,310 doctors shared insights

Cancer (Definition)

Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more


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Do pet scans show lung cancer?

Do pet scans show lung cancer?

Sort of...: The pet scan non-specifically show very metabolically active (consuming lots of energy), and lung cancer and its metastasis fit that category. It is not specific. Benign conditions like sarcoid can also make pet studies glow very brightly as well. Slow growing lung cancer, broncheoalveolar may not be pt avid. ...Read more

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Are CT Scans accurate at discovering cancer?

Are CT Scans accurate at discovering cancer?

So-so: It depends where, how big the cancer is, and so forth. The new CT scans pick up lung cancers that are quite small -- most of the "cures" of tumors found this way may be of non-aggressive tumors. A scan can pick up a mass suspicious for cancer but of course tissue's required for certainty. ...Read more

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How accurate is CT with contrast for lung cancer detection?

How accurate is CT with contrast for lung cancer detection?

See answer: Pulmonary ct is extremely sensitive in identifying lung nodules. When found, these nodules then need to be appropriately evaluated either with followup lung ct, pet-ct, or direct tissue sampling. Your clinical dr. Can best advise you – or you can be seen at a dedicated lung nodule center. ...Read more

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Can a CT scan detect ovarian cancer?

Can a CT scan detect ovarian cancer?

Need tissue: It can detect a mass but the definitive diagnosis is done by looking at the tissue either taken by biopsy or surgery. ...Read more

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Odds of pet scan missing bone cancer?

Odds of pet scan missing bone cancer?

Yes: Pet measure metabolic activity and yes they miss bone tumour and metastasis if small, not much metabolic activity and bone scan, MRI is better. ...Read more

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How accurate is a CT at detecting pancreatic cancer?

How accurate is a CT at detecting pancreatic cancer?

Imaging with CT: Can observe some cases, but will miss others, so it is not the best, endoscopy, endoscopic ultrasound, and ERCP or mr-cholangiography help, but all require biopsy proof. Next is categorizing for resection, the only successful treatment, and the vessels (sma, smv, portal vein) are the critical facts, as well as nodes, peritoneal and distant sotes of mets. ...Read more

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How accurate is non contrast mri at detecting brain cancer?

How accurate is non contrast mri at detecting brain cancer?

Not always accurate: The best imaging to detect brain contrast is an MRI with contrast. Cancers have blood supply so the contrast makes it easier to detect a tumor, especially a small one that otherwise may be difficult to identify. ...Read more

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My pet scan was highly suspicious for malignancy in rt lung.Now onto Bronchoscope so didn't pet confirm cancer?This cancer isn't curable!

My pet scan was highly suspicious for malignancy in rt lung.Now onto Bronchoscope so didn't pet confirm cancer?This cancer isn't curable!

PET scan helps but n: A PET scan can show an abnormality where body cells are overactive. This happens commonly with Cancer and with any Infection or inflammation. So a biopsy is required to make the distinction between Inflammation and Cancer. A bronchoscopy may show the tumor or it may be used to get a biopsy by getting near to the tumor ...Read more

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How accurate is a ct scan for lung cancer?

How accurate is a ct scan for lung cancer?

CT Chest: has a high sensitivity for detecting lung cancer, approximately 95%, so CT will detect the vast majority of lung cancers. ...Read more

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How is pet CT scan done?

How is pet CT scan done?

PET/CT scan: You need to fast for 4 hours first, then you will recieve an injection of a small amount of radioactive glucose (i.e. Sugar). Next you will sit in a recliner chair for about 70 minutes to allow the glucose to distribute throughout you. Then you will lie on your back on the pet/ct scanner (a tunnel shaped machine) for 20 minutes. There are no side effects from the test or restrictions afterwards. ...Read more

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Can a ct scan detect liver failure in metastic colon cancer?

Can a ct scan detect liver failure in metastic colon cancer?

No: A CAT scan is used to visually define the extent of metastatic colon cancer in the liver should metastasis be present. Liver failure is a condition measured by functional abnormalities that occur within the liver usually due to parenchymal damage such as inflammation from hepatitis . Here one measures serum enzymes and the presence of elevated alkaline phosphatase and bilirubin in serum. ...Read more

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Are cea markers reliable for metastic colon cancer ?

Are cea markers reliable for metastic colon cancer ?

Depending how used: CEA first identified in 1965 by Phil Gold and Samuel O. Freedman in human colon cancer extracts. Thought to be valuable for dx colorectal Ca but the glycoprotein is also expressed in inflamed tissue so that smoking and enema can cause rise. Best used for monitoring so that if present in primary and rises it represents treatment failure and if diminishes during treatment it represents a response. ...Read more

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Is an MRCP better than a CT scan in detecting pancreatic cancer?

Is an MRCP better than a CT scan in detecting pancreatic cancer?

Since I had-: -pancreatitis, l have gone thu the screening process. Amylase is high sometimes, endoscopic ultrasound, MRI with IV contrast all have been done & all is clear. Had in Jan, 2016 & now have my final MRI with IV contrast on 1 NOV 2016. That's the workup after pancreatitis, as far as screening, I would feel amylase levels. The rest R costly 4 screening ...Read more

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Are suv on pet scan gamma?

Are suv on pet scan gamma?

SUV...: Suv stands for standardized uptake value. It is used for semi-quantitative analysis on pet scan. It tells the amount of glucose uptake or hypermetabolism of a tumor. ...Read more

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How do pet scans, mri, ct, and bone/gallium scans differ?

How do pet scans, mri, ct, and bone/gallium scans differ?

Different mechanisms: Mri uses magnetic radiation( no x-ray) for anatomic localization and characterization of different parts of body, water and fat constitution of different tissues.Ct uses x-ray to characterize anatomy of body, better for bone than mr.Pet, bone, gallium scans use radio tracers intravenously.Petglucose metabolism of tumors, gallium (infection/tumor), bone scan for fxs, tumors, infection bone metabolism. ...Read more

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Does CT scan show cancer?

Does CT scan show cancer?

not always: Not all cancer is visible with a ct scan. There are many variables- size of tumor, location, presence or abscence of IV or oral contrast. ...Read more

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Abdominal cat scan show colon cancer?

Unreliable: Specialized cts that are designed to identify colon cancers (ct colonography) are available, but require a specific bowel prep and regimen to be effective. Routine ct scans will miss many small colon cancers that colonoscopy will find--colonoscopy remains the gold-standard. ...Read more

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Dr. Guido Davidzon
291 doctors shared insights

Pet Scan (Definition)

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