18F-FDG PET/CT Prognostic Parameters in Patients with Head and Neck Cancer. | ||||
| Egyptian Journal Nuclear Medicine | ||||
| Article 2, Volume 23, Issue 2, December 2021, Page 12-22 PDF (346.06 K) | ||||
| Document Type: Review Article | ||||
| DOI: 10.21608/egyjnm.2021.217673 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Ashraf, A1; Moustafa, H2 | ||||
| 1Nuclear medicine Unit, National cancer institute. | ||||
| 2Nuclear Medicine Unit, Faculty of medicine, Cairo University, Egypt. | ||||
| Abstract | ||||
| In head and neck cancer, computed tomography (CT) magnetic resonance (MR) imaging are routinely used. However 18F FDG PET-CT has been shown to have higher sensitivity and a high negative predictive value for identification of small lymph nodes of the neck especially using the volume of 18F-FDG - avid disease (MTV) and the total lesion glycolysis (TLG) as a prognostic indicator. Metastasis in HNSCC is relatively low and it implies a poor prognosis and has a major impact on patient management. Additionally, patients with HNSCC have a higher prevalence of synchronous and metachronous primary tumors, which can be detected at FDG PET/CT. 18F-FDG PET is the most sensitive noninvasive modality presently available for differentiating post-treatment changes regardless of the primary treatment modality used from residual or recurrent disease as compared to CT and MR. PET-CT hypoxic imaging is a growing diagnostic modality as Hypoxia represents a negative prognostic factor for radiation treatment where it is associated with a significant resistance to radio-chemotherapy. Several PET tracers have emerged for this purpose like (18F-FMISO), (18F-FAZA). Radiomics as an emerging technology concerned with extraction of numerous quantitative parameters by extraction features from different imaging modalities (CT, MRI, and PET-CT). Radiomics commonly describe shape; intensity and texture characterization and it provide fast, cost-effective non-invasive comprehensive tissue characterization that offer complementary information to conventional clinical and imaging modalities. | ||||
| Keywords | ||||
| PET/CT & Head and Neck Cancer & Metabolic Parameters | ||||
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