Jurnalul de Chirurgie
 Jurnalul de chirurgie
Aparitie trimestriala in a doua luna a trimestrului
Published quarterly in the second month of the quarter
ISSN: 1584 - 9341 Vol.10 Nr.3 - Iulie-Septembrie 2014 | vineri, 19 iulie 2019
ISSN: 1584 - 9341 Vol.10 No.3 - July-September 2014
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PET AND PET-CT: PHYSICAL PRINCIPLE AND MEDICAL APLICATIONS
V.Rusu, Cipriana Ştefănescu
Departamentul de Biofizică, Fizică medicală - Medicină Nucleară
Universitatea de Medicină şi Farmacie „Gr.T.Popa” Iaşi, Facultatea de Medicină
Jurnalul de chirurgie 2007; 3 (2):92-101
Full text: PDF Format (Romana/Romanian)

Abstract:

Positron emission tomography (PET) is a noninvasive imaging method that can “see” the metabolisms inside the living cells. It involves the acquisition of functional images based on the detection of radiation coming from the positron emission of a radiotracer administered to the patient. This radiotracer can be a metabolic analog, like is the case of glucose analog 2-[fluorine-18]-fluoro-2-deoxy-D-glucose (18FDG), the most commonly used PET radiotracer. PET images of the human body are used to evaluate a variety of diseases, most often to detect cancer and to examine the effects of cancer therapy by characterizing cell viability and biochemical changes in the cell. It is potentially useful in cancer imaging because the increased metabolism of tumor cells leads to increased uptake of glucose, and, therefore, uptake of 18FDG, also. PET-CT is the fusion of functional and anatomic information acquired almost simultaneously, that lets us see both the structural anatomy and the functional data on the same image. They complete each other: if PET scan is powerful in evaluating the functional characteristics of the tissues, CT is a powerful structural resolution imaging method. The highly sensitive PET scan detects the metabolic signal of actively growing cancer cells in the body and the CT scan provides a detailed picture of the internal anatomy that reveals sites, size and shape of cancer tissue. Alone, each imaging test has particular benefits and limitations but when the results of PET and CT scans are "fused" together, the combined image provides complete information on cancer location and metabolism.

KEYWORDS: PET, PET-CT, ONCOLOGY



: Creative Commons License
Jurnalul de chirurgie [Journal of Surgery] by Editorial Board, Department of Surgery University of Medicine and Pharmacy Iasi, E. Tarcoveanu, R. Moldovanu is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
Based on a work at www.jurnaluldechirurgie.ro.