Dynamic contrast-enhanced MR imaging : a reliable diagnostic tool for recurrent head and neck tumors : B-184

Détails

ID Serval
serval:BIB_AF899E8522E1
Type
Actes de conférence (partie): contribution originale à la littérature scientifique, publiée à l'occasion de conférences scientifiques, dans un ouvrage de compte-rendu (proceedings), ou dans l'édition spéciale d'un journal reconnu (conference proceedings).
Sous-type
Poster: résume de manière illustrée et sur une page unique les résultats d'un projet de recherche. Les résumés de poster doivent être entrés sous "Abstract" et non "Poster".
Collection
Publications
Institution
Titre
Dynamic contrast-enhanced MR imaging : a reliable diagnostic tool for recurrent head and neck tumors : B-184
Titre de la conférence
ECR 2009, European Congress of Radiology
Auteur⸱e⸱s
Kamel E., Pasche P., Meuli R., Hauser P., Borchardt I., Schnyder P., Duvoisin B.
Adresse
Vienna, Austria, March 6-10 2009
ISBN
0938-7994
Statut éditorial
Publié
Date de publication
2009
Peer-reviewed
Oui
Volume
19
Série
European Radiology
Pages
S180
Langue
anglais
Notes
Purpose: To investigate the role of Dynamic Contrast-Enhanced MR Imaging (DCE-MRI) in the follow-up of patients with head and neck tumors. Methods and Materials: Twenty-seven patients were recruited. DCE-MRI was performed as a part of regular posttherapy follow-up (n = 20) or for clinical suspicion of local disease recurrence (n = 7). Axial dynamic T1-weighted fat sat sequences were performed in a 3-T MR scanner for a total duration of 10 minutes after contrast administration. An operator-defined region of interest was placed in the maximal enhancement area(s) of the tumor bed. A time-intensity curve was constructed. The time to maximal enhancement (Tmax), enhancement ratio at 3 min (ER3min), and washout ratio at 10 min (WR10min) were measured. Per-lesion DCE-MRI findings were correlated with histologic analysis or with clinical and radiological follow-up. Results: There was a significant difference between Tmax, ER3min and WR10min of recurrent lesions and those of posttherapy tissue remodeling (2.2 min, 19%, and 20% vs. 8.3 min, 12%, and 6%, P < 0.05). Among 12 recurrent lesions in 9 patients, DCE-MRI detected 11/12 (91%) of these foci. One false negative result was due to microscopic disease residue. Two radionecrotic lesions were responsible for false positive DCE-MRI results in 2 patients. In the remaining 16 patients, true negative DCE-MRI findings were confirmed. Accordingly, the sensitivity, specificity, and accuracy of DCE-MRI were 91%, 89% and 90%, respectively. Conclusion: DCE-MRI can be integrated in the diagnostic work-up of patients with or without clinical or radiological suspicion of recurrent head and neck tumors.
Création de la notice
11/03/2009 13:21
Dernière modification de la notice
20/08/2019 16:19
Données d'usage