Lorenzo Preda1,2, Giorgio Conte3, Luke Bonello4, Caterina Giannitto5, Elena Tagliabue6, Sara Raimondi6, Mohssen Ansarin7, Luigi De Benedetto7, Augusto Cattaneo7, Fausto Maffini8, Massimo Bellomi5,9. 1. Department of Clinical-Surgical Diagnostic and Pediatric Sciences, Università degli Studi di Pavia, Pavia, Italy. 2. Division of Radiology, National Center of Oncological Hadrontherapy (CNAO Foundation), Pavia, Italy. 3. Postgraduation School in Radiodiagnostics, Università degli Studi di Milano, Via Festa del Perdono 7, 20122, Milan, Italy. giorgioconte.unimed@gmail.com. 4. Division of Radiology, Poliambulanza Hospital, Brescia, Italy. 5. Division of Radiology, European Institute of Oncology, Milan, Italy. 6. Division of Epidemiology and Biostatistics, European Institute of Oncology, Milan, Italy. 7. Division of Head and Neck Surgery, European Institute of Oncology, Milan, Italy. 8. Division of Pathology, European Institute of Oncology, Milan, Italy. 9. Oncology and Haematology/Oncology Department, Università degli Studi di Milano, Milan, Italy.
Abstract
OBJECTIVES: To assess the diagnostic accuracy of MRI performed using surface coils, with and without contrast medium, in predicting thyroid and cricoid cartilage infiltration in laryngeal tumours, and to investigate whether the radiologist's experience influences diagnostic accuracy. METHODS: We retrospectively enrolled patients with biopsy-proven laryngeal cancer who had undergone preoperative staging MRI and open surgery. Two radiologists with different experience (senior vs. junior) reviewed the MR images without (session A1) and with contrast medium (session A2) separately. We calculated the accuracy of MRI with and without contrast medium in detecting infiltration of the thyroid and cricoid cartilages. Interobserver agreement was calculated by Cohen's Kappa (k). RESULTS: Forty-two patients were enrolled, for a total of 62 cartilages. In session A1 the senior and junior radiologists showed an accuracy of 85% and 71%, respectively, with k = 0.53 (0.33-0.72). In session A2 the senior and junior radiologists showed an accuracy of 84% and 77%, respectively, with k = 0.68 (0.49-0.86). CONCLUSIONS: Staging of laryngeal tumours with surface coil MRI showed good diagnostic accuracy in assessing cartilaginous infiltration. We observed similar values of diagnostic accuracy for the analysis performed with and without contrast medium for the senior radiologist. KEY POINTS: • Surface coil MRI demonstrated good accuracy in assessing laryngeal cartilage invasion. • The radiologist's experience can influence the diagnostic accuracy. • Gadolinium administration may increase interobserver concordance.
OBJECTIVES: To assess the diagnostic accuracy of MRI performed using surface coils, with and without contrast medium, in predicting thyroid and cricoid cartilage infiltration in laryngeal tumours, and to investigate whether the radiologist's experience influences diagnostic accuracy. METHODS: We retrospectively enrolled patients with biopsy-proven laryngeal cancer who had undergone preoperative staging MRI and open surgery. Two radiologists with different experience (senior vs. junior) reviewed the MR images without (session A1) and with contrast medium (session A2) separately. We calculated the accuracy of MRI with and without contrast medium in detecting infiltration of the thyroid and cricoid cartilages. Interobserver agreement was calculated by Cohen's Kappa (k). RESULTS: Forty-two patients were enrolled, for a total of 62 cartilages. In session A1 the senior and junior radiologists showed an accuracy of 85% and 71%, respectively, with k = 0.53 (0.33-0.72). In session A2 the senior and junior radiologists showed an accuracy of 84% and 77%, respectively, with k = 0.68 (0.49-0.86). CONCLUSIONS: Staging of laryngeal tumours with surface coil MRI showed good diagnostic accuracy in assessing cartilaginous infiltration. We observed similar values of diagnostic accuracy for the analysis performed with and without contrast medium for the senior radiologist. KEY POINTS: • Surface coil MRI demonstrated good accuracy in assessing laryngeal cartilage invasion. • The radiologist's experience can influence the diagnostic accuracy. • Gadolinium administration may increase interobserver concordance.
Entities:
Keywords:
Larynx; Magnetic resonance imaging; Neoplasm; Staging; Surface coil
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