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>Journals >Cirugía y Cirujanos >Year 2007, Issue 6


Estrada-Sánchez GR, Altamirano-Ley J, Ochoa-Carrillo FJ
Normal variants and frequent pitfalls with 18FDG PET/CT study
Cir Cir 2007; 75 (6)

Language: Español
References: 22
Page: 491-497
PDF: 201.45 Kb.

[Full text - PDF]

ABSTRACT

Background: Fluordeoxyglucose (18FDG) is the most common radiotracer used for PET/CT studies. It enters the cell because of the glucose transporter proteins (GLUTs): 1) erythrocytic membrane, skeletal muscle, lymphocytes, ovaries, breast; 2) pancreas, retina, erythrocytes; 3) adipocytes, ovaries, testis; 4) skeletal muscle, adipocytes, ovaries, myocardium; 5) breast, small intestine, testis, kidney, erythrocytes; 6) spleen, leucocytes, brain; 7) liver; 8) testis, brain; 9) liver, kidney; 10) liver, pancreas; 11) heart, muscle; 12) heart, prostate; 13) brain. We undertook this study to expand the knowledge about physiological uptake and physiological uptake of 18FDG.
Discussion: False positives were as follows: pneumoniae, tuberculosis, sarcoidosis, cryptococcosis, thrombosis, bronchitis, costochondritis, radiation pneumonitis, misregistration for respiratory movements, catheters, thyroid and adrenal adenomas, osteophytes, fractures, abscess, foreign body, surgical wounds, ostomies, prosthesis, degenerative joint diseases, osteomyelitis, amyloidosis, pancreatitis, myositis, gastritis, colitis, herpes zoster. 18FDG should be injected 4-6 h after insulin administration because it will be concentrated in the muscles. The brown fat raises its uptake 50% in late images.
Conclusions: It is vital to know the most frequent sites of physiological uptake in the 18FDG PET/CT studies to identify those regions that occasionally present hypermetabolism but that are not related to neoplastic tumors. This must be taken into consideration in the evaluation of PET/CT studies.


Key words: 18FDG, PET/CT, physiological uptake.


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>Journals >Cirugía y Cirujanos >Year 2007, Issue 6
 

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