Evaluation of T staging of laryngeal and hypopharyngeal neoplasms with dual-energy CT iodine images
10.13929/j.issn.1003-3289.2020.08.012
- VernacularTitle: 双能CT碘图术前评估喉癌及下咽癌T分期
- Author:
Xiaoming ZHU
1
Author Information
1. Department of Radiology, Affiliated Zhongshan Hospital of Dalian University
- Publication Type:Journal Article
- Keywords:
Dual-energy;
Hypopharyngeal neoplasms;
Laryngeal neoplasms;
Neoplasm staging;
Tomography, X-ray computed
- From:
Chinese Journal of Medical Imaging Technology
2020;36(8):1173-1176
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To explore the value of iodine image of dual-energy CT for preoperative T staging of laryngeal and hypopharyngeal neoplasms. Methods: Preoperative dual-energy CT images of 117 patients with laryngeal or hypopharyngeal cancers confirmed by pathology were retrospectively analyzed, including 41 cases of stage T1, 33 cases of stage T2, 31 cases of stage T3 and 12 cases of stage T4 tumors. T staging was performed based on iodine images of dual-energy CT taken the pathological results as standards, and the accuracy of staging with CT iodine images was analyzed. Results: Dual-energy CT iodine images of laryngeal and hypopharyngeal cancers showed vocal cord/pharyngeal wall thickening or the presence of soft tissue mass and/or concentrated iodine concentration at the tumor areas. The diagnostic accuracy of preoperative T staging of laryngeal and hypopharyngeal cancers was 97.56% (40/41) for T1, 84.85% (28/33) for T2, 93.55% (29/31) for T3 and 91.67% (11/12) for T4 according to CT iodine images. The overall accuracy of preoperative T staging of CT iodine images was 92.31% (108/117), which had good consistency with postoperative pathological staging results (Kappa=0.89, P<0.05). Conclusion: Dual-energy CT iodine images can accurately display the location, shape and invasion range and therefore describe preoperative T staging of laryngeal and hypopharyngeal cancers.
