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difference between pet scan and ct scan

A 37-year-old member asked:
Dr. Carl Decker
23 years experience Radiology
Usually done togethr: A pet scan measures the uptake of glucose. The uptake of glucose is increased in most cancers. A ct scan is a basically a series of xrays over the are ... Read More

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A 49-year-old member asked:
Dr. David Dinhofer
40 years experience Radiology
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 Interne ... Read More
A 38-year-old member asked:
Dr. Joseph Accurso
28 years experience Radiology
2 groups: 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 ... Read More
A 41-year-old member asked:
Dr. William Goldie
47 years experience Pediatric Neurology
Precision: Ct is a great screening tool for imaging the organs. Mri images certain tissues more accurately. Pet uses radioactive material to light up specific ... Read More
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A 42-year-old member asked:
Dr. Maureen Nash
23 years experience Geriatric Psychiatry
PET is functional: A pet scan tells us which cells are taking up glucose which is a measure of functioning. Cancer cells take up too much glucose and other illnesses lik ... Read More
A 39-year-old member asked:
Dr. Michael Korona
32 years experience Interventional Radiology
See : Radiologyinfo.Org.
A 55-year-old female asked:
Dr. Michael Jaindl
36 years experience ENT and Head and Neck Surgery
I am sorry... : To hear about your father. Melanoma is a horribly unpredictable cancer. It can show up six months or six years after the original treatment and can be ... Read More
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A 52-year-old member asked:
Dr. Gerald Mandell
51 years experience Nuclear Medicine
Anatomic/physiologic: Pet scan involves intravenous injection of radio tracer usually f18 fdg.Imaging of whole body occurs for localization of areas of increased glucose me ... Read More
A 56-year-old male asked:
Dr. Michael Gabor
32 years experience Diagnostic Radiology
It depends: on the technical parameters of the scans, particularly the CT scan. The exposure from the CT scan could potentially be more, about the same, or lass t ... Read More
A 38-year-old member asked:
Dr. Dan Fisher
26 years experience Internal Medicine
No.: The ct is not good enough. When it is combined with the pet scan it is very good.

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