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Doctor insights on: Pet Ct Lymphoma Diagnosis

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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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Dr. Krishna Kumar
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Computed Tomography (Definition)

Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! the image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more


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Can CT scan diagnose meningitis?

Can CT scan diagnose meningitis?

Not diagnostic: A ct is part of the work up of meningitis. However, a lumbar puncture is the test that typically allows for a diagnosis of meningitis by obtaining cerebrospinal fluid for study and cultures. ...Read more

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Can a CT scan diagnose endometrial cancer?

Can a CT scan diagnose endometrial cancer?

CT is: generally not used for diagnosis or staging of endometrial cancer, however endometrial can be detected on a contrast enhanced scan. Ultrasound is more useful for initial imaging, and if additional imaging is necessary, MRI is superior to CT. ...Read more

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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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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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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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Can a CT scan see stage 2 colon cancer?

Can a CT scan see stage 2 colon cancer?

Sometimes: Ct imaging can show abnormalities in the colon, but the best test is colonoscopy. This gives a doctor the chance to directly visualize the colon and also biopsy anything suspicious. ...Read more

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Could MRI or CT scan detect brain cancer?

Could MRI or CT scan detect brain cancer?

Sure: Mri would be the imaging test of choice, though often we start with a ct. Ultimately, you'll likely need a biopsy to prove it's a cancer. ...Read more

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Does a normal CT scan exclude pancreatic cancer?

Does a normal CT scan exclude pancreatic cancer?

Not entirely: Ct imaging is useful, but pancreatic cancer can be very difficult to visualize on ct. In fact, even in patients with known pancreatic cancer it's not unheard of for the tumor itself to be poorly or incompletely seen. If there's high suspicion, endoscopy and ultrasound are useful tests. ...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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Is a lymphangiogram & gallium scan good for diagnosing lymphoma?

Is a lymphangiogram & gallium scan good for diagnosing lymphoma?

Diagnosing no: Staging yes. Ie determining the extent of disease. Lymphangiography is never done now, and gallium is largely replaced by modern imaging modalities. ...Read more

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Is Full body PET scan or CT scan better for diagnosing Lymphoma? Which uses less radiation?

Both: The actual diagnosis of lymphoma requires tissue, usually excisional biopsy of an entire lymph node. Staging to see where other sites of disease could be is done with a combined PET/CT. The staging used to matter more many years ago when they would often give XRT or do surgery, it doesn't matter as much as it used to because almost everybody gets systemic chemotherapy for both Hodkins and non H ...Read more

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Would an ultrasound scan detect retroperitoneal tumours ?

Yes: An ultrasound can detect a retroperitoneal tumor. If seen, typically a ct would be done as well, so if suspected clinically, it might be better to go straight to ct. ...Read more

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Liver cyst on CT scan need biopsy?

Liver cyst on CT scan need biopsy?

Almost certainly not: Provided it is a 'simple cyst' which is a fluid filled sac. Sometimes if there is debris or septations as cyst may be aspirated. If you are asymptomatic and the lesion is a simple cyst, it's best left alone. ...Read more

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Last yr CT scan n yesterday abd ultrasound shows diffuse hepatocellular disease in liver. Prognosis, treatment, further testing? Crohns patient

Last yr CT scan n yesterday abd ultrasound shows diffuse hepatocellular disease in liver. Prognosis, treatment, further testing? Crohns patient

Crohn's complication: Many Crohn's complications. Granulomatous hepatitis (non infectious) And Amyloidosis of liver two rare but known problems. Please see your gastroenterology specialist soon. This could be due to some drug as well, such as sulfasalazine. Check Alkaline Phosphatase levels. ...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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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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Lung tumor CT scan with or without contrast?

Lung tumor CT scan with or without contrast?

Either: I usually do them without so I don't expose the patient to the contrast, which can injure kidneys. However, if the tumor is close to the mediastinum, I usually do order it with contrast because it's often difficult to tell the various structures apart without it. It also helps to identify lymph nodes. ...Read more

Dr. Michael Thompson
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Lymphoma (Definition)

A malignancy that develops in the lymph glands that causes nodes ...Read more