Positron Emission Tomography/Computed Tomography Imaging of Residual Skull Base Chordoma Before Radiotherapy Using Fluoromisonidazole and Fluorodeoxyglucose: Potential Consequences for Dose Painting

2012 ◽  
Vol 84 (3) ◽  
pp. 681-687 ◽  
Author(s):  
Hamid Mammar ◽  
Khaldoun Kerrou ◽  
Valérie Nataf ◽  
Dominique Pontvert ◽  
Stéphane Clemenceau ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Positron Emission Tomography ◽  
Skull Base ◽  
Emission Tomography ◽  
Dose Painting ◽  
Computed Tomography Imaging ◽  
Tomography Imaging ◽  
Positron Emission ◽  
Skull Base Chordoma

scholarly journals 18F-fluorideoxyglucose positron emission tomography/computed tomography imaging: Artifacts and pitfalls

2015 ◽  
Vol 68 (1-2) ◽  
pp. 41-48
Author(s):  
Jasna Mihailovic ◽  
Emil Matovina ◽  
Katarina Nikoletic
Keyword(s):  
Computed Tomography ◽  
Positron Emission Tomography ◽  
Healing Process ◽  
Emission Tomography ◽  
Benign Tumors ◽  
Positive Finding ◽  
Computed Tomography Imaging ◽  
Tomography Imaging ◽  
18F Fluorodeoxyglucose ◽  
Positron Emission

18F-fluorodeoxyglucose, being a radiolabeled glucose analogue, is a marker of glucose metabolism indicator. Since glucose uptake is increased in malignant tumors, its major application is in oncology. However, an increased 18F- fluorodeoxyglucose uptake is found in various benign tumors, granulomatous diseases, tuberculosis, inflammation, infection. A healing process may be interpreted as a false positive finding. In contrast, some types of renal cell cancers and lymphomas, neuroendocrine tumors, colonic mucinous adenocarcinomata, hepatocellular carcinomas, prostate cancer, and carcinoid tumors have low 18Ffluorodeoxyglucose avidity which may give a misleading false negative result. In addition, an increased 18F-fluorodeoxyglucose uptake in the bone marrow may be seen in oncologycal patients following various types of therapy. Besides the advantages of hybrid positron emission tomography-computed tomography imaging, this dual-modality scanning may produce their own specific artifacts due to different causes, such as metallic implants, respiratory motion, contrast medium and truncation. Proper patient preparation is required to minimize the potential artifactual uptake patterns that make reporting difficult. It is important to learn about proper quality control, imaging and reconstruction and to be familiar with potential artifacts and pitfalls for the accurate interpretation of 18F-fluorodeoxyglucose positron emission tomography-computed tomography.

Incidental head and neck findings on18F-fluoro-deoxy-glucose positron emission tomography computed tomography

2015 ◽  
Vol 129 (9) ◽  
pp. 898-902 ◽  
Author(s):  
S P Williams ◽  
A J Kinshuck ◽  
C Williams ◽  
R Dwivedi ◽  
H Wieshmann ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Positron Emission Tomography ◽  
Head And Neck ◽  
Neck Region ◽  
Emission Tomography ◽  
Computed Tomography Imaging ◽  
Head And Neck Region ◽  
Tomography Imaging ◽  
Lung Cancer Patients ◽  
Positron Emission

AbstractObjective:The overlapping risk factors for lung and head and neck cancer present a definite risk of synchronous malignant pathology. This is the first study to specifically review incidental positron emission tomography computed tomography findings in the head and neck region in lung carcinoma patients.Methods:A retrospective review was performed of all lung cancer patients who underwent positron emission tomography computed tomography imaging over a five-year period (January 2008 – December 2012), identified from the Liverpool thoracic multidisciplinary team database.Results:Six hundred and nine patients underwent positron emission tomography computed tomography imaging over this period. In 76 (12.5 per cent) scans, incidental regions of avid18F-fluoro-deoxy-glucose uptake were reported in the head and neck region. In the 28 patients who were fully investigated, there were 4 incidental findings of malignancy.Conclusion:In lung cancer patients undergoing investigative positron emission tomography computed tomography scanning, a significant number will also present with areas of clinically significant18F-fluoro-deoxy-glucose uptake in the head and neck region. Of these, at least 5 per cent may have an undiagnosed malignancy.

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