A 30-year-old member asked:
when having a pet scan, is the ct scan that used in conjunction good enough to diagnose all tumors?
3 doctor answers
Dr. Dan Fisher answered
26 years experience Internal Medicine
No.: The ct is not good enough. When it is combined with the pet scan it is very good.
Answered on Jul 12, 2012
Dr. Garry Choy answered
15 years experience Radiology
Good but not all: It is good to have ct in conjunction with pet scan because ct provides more resolution. It helps the radiologist correlate signals seen on pet scan with actual anatomy precisely. However, no test is perfect, so pet/ct is not able to diagnose all tumors. But pet/ct can diagnose many types.
Answered on Sep 28, 2016
Dr. Gerald Mandell answered
51 years experience Nuclear Medicine
Not always: Usually CT associated with PET varies in resolution. Higher resolution usually more radiation dose to patient. Usually resolution good enough to localize structure causing increased metabolism. Usually associated CT is without intravenous contrast. PET can localize lesion for biopsy or surgery. If more detail needed once lesion localized many times MR for tissue characteristics is usualized
Answered on Nov 22, 2014
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