A 39-year-old female asked:
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what is the difference between normal ct and pet ct scan?

2 doctor answers
Dr. Brian Wosnitzer
17 years experience Nuclear Medicine
PET/CT vs. CT: Pet/ct scan has 2 sets of images (pet ; ct images) which are fused for interpretation. The ct part provides anatomic info while the pet part provides functional info (glucose distribution/metabolic activity). Sometimes the ct part of pet/ct is done as low dose ct without IV or oral contrast. These images are suboptimal compared to a separate dedicated ct with hi dose ; IV and oral contrast.
Answered on Jun 10, 2014
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Dr. Gerald Mandell
51 years experience Nuclear Medicine
Nuclear study: Ct radiographic examination by itself is usually more detailed with higher resolution utilizing intravenous contrast material to help differentiate soft tissue abnormalities such as lymph nodes from vascular structures. Ct combined with pet, is low resolution but helps define areas of increased radiotracer uptake of isotope f18 fdg, glucose metabolite, by allowing anatomic localization.
Answered on Jan 26, 2014
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A 39-year-old female asked:
Dr. Carlos Encarnacion
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CT is a glorified...: ..X-ray that shows the body as if it was sliced horizontally. You see organs and other structures but sometimes we cannot tell if they're cancer or be ... Read More
A 32-year-old member asked:
Dr. Maureen Nash
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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 29-year-old member asked:
Dr. Carl Decker
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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
A 50-year-old male asked:
Dr. Patrick Connerly
A Verified Doctor answered
A US doctor answered Learn more
All are good: It depends on what one is looking for . All 3 types are best for different things
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