Doctor insights on:
Pet Scan Suv Levels
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
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 moreSee 2 more doctor answers
No: SUV has no bearing on the aggressiveness of the cancer. It is a relative measure of the glucose metabolism. In fact, some very aggressive tumors have no FDG uptake at all. Some benign conditions like infection can have high uptake. The standard uptake value depends on many factors like patient body size and serum glucose level and the normal uptake in the tissue surrounding the target lesion. ...Read more
Possible: Please note that cea is just another tool we have and as such it is not perfect. Many patients have elevated cea and have no cancer and many others have clinical and x-ray evidence of active cancer and yet their cea is normal. Such tumors just don't produce cea and in those cases, the test is useless. No test is infallible. ...Read moreSee 1 more doctor answer
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
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 moreSee 2 more doctor answers
Tsh level 5.58, no symptoms, u/s found 1cm subtle hypoechoic nodule w/increased peripheral vascularity. Pcp ordered rai uptake scan before fna. Why?
I have no idea: Hi. It's not a hyperactive nodule...we know that from the TSH. I'd go straight to an FNA. The scan will show a "cold" nodule, which we already know it is, and will not help differentiate benign from cancer. FNA cytology (hopefully with gene testing) is all you need at this point. Good luck. ...Read moreSee 2 more doctor answers
Depends: This depends on the organ of interest. This is not uncommon with the ovaries and uterus as us has an advantage. This is same with the breasts as well. As for other organs in the abdomen, sometimes it may depends on the patient's body habitus or lack of intravenous contrast/dye that some finding may not be apparent on ct. ...Read more
GoBackToThePetBox: At your age the thymus is considered a residual organ, kind of like your appendix.Now,there are some theories as to its function later in life (an immune function or whatever),but overall it just sits there.Of course,it's made of living tissue so there will be some"activity"in it & rarely,can develop a tumor or infection.But in your case who knows?The people who ordered the test in the first place ...Read more
A lot: Sorry to be so vague. They are very different in what can be seen and what can be diagnosed. Not enough room to go through the details. The Internet has many resources for this information. Try this one: http://www.radiologyinfo.org/ ...Read more
Sodium low&cortisol highi& fatigue&weight loss. Clear CT scan in Apr15. Symptoms persisted CT scan in Feb 16 clear. Could CT missed SCLC. Repeat scan?
Look outside lung: Yes CT scans can miss SCLC, especially if the scan is not a 'high resolution' scan with sufficient overlap. However, with 2 negative scans, you should look outside the lung. Head & neck cancers and esthesioneuroblastoma (tumor of nerves that sense smell) can cause this symptom pattern. Though rarer, SCLC can occur outside the lung, as well. A PET scan or whole body bone scan could help. TTYD. ...Read more
Incidental finding in CT: Fdg uptake suvmax3.8 in pituitary gland.subsequent MRI normal. Hormones normal. Should I be worried?
Probably OK: Some researchers use SUVmax of 4.1 before calling the pituitary abnormal. In those cases when the pituitary does have increased FDG uptake, a normal MRI will rule out at adenomas, which are usually the cause of increased activity. If the MRI was negative and you have no symptoms, then these are good signs. ...Read more
Anatomy vs Physiolog: Mri and ct scans are typically looking at the anatomy of a patient, as well as differences in blood flow if contrast is administered. Pet, bone and gallium scans are all looking at the function, or physiology of the patient, and the anatomy is of secondary concern. For example, pet scans are usually using f-18 fdg, a glucose analog, and display differences in glucose use, a main energy source. ...Read moreSee 2 more doctor answers
+ PPD test, CT scan solitary pulmonary nodule. 5mos after nodule stable/slight increase pet2.9suv bronchoscopy inflammatory no cough doc said remov?
Curious: More information is required. The pet uptake (measured in standard uptake value or suv), is low level, but not low enough to guarantee benignity. Given age and + ppd, i would suspect this could be an active granuloma. Given your age, i would encourage consultation with a pulmonologist and full review of all your records first. Lung surgery is serious business. ...Read moreSee 2 more doctor answers
Ct scan 2013 no nodules-2 on CT scan 10/2014 ago-ct scan 11/2014 3 nodules-all around 5 mm-diagnosed w/stage 1b breast ca 9/2013 triple+ is this mets?
Suspicious for mets: Your doctor can verify and confirm it one of two ways. Do a PET scan now or do one more CT scan of chest in 6-8 weeks from now. Biopsy may be needed but the nodules are too small for a biopsy right now...they need to be close to 10-12 mm in size. Good luck. ...Read moreSee 1 more doctor answer
- Talk to a doctor live online for free
- What is suv on a pet scan?
- Suv values in pet scan
- Pet scan results suv
- Ask a doctor a question free online
- Pet scan suv numbers
- Pet scan results suv values
- What does suv mean in a pet scan?
- Pet scan radiation levels
- Talk to a neurologist online