Diagnostic value of multi-slice spiral CT scanning in the early stage of glottic carcinoma

ZHANG Ying

Abstract：Objective To investigate the value of multi -slice spiral CT phase scan and post -processing techniques in diag-nosis of early glottic carcinoma .Methods A retrospective analysis was conducted on 29 patients with glottic carcinoma at tis , T1N0M0, and T2N0M0 stage, who were confirmed by pathology , with complete preoperative CT and postoperative pathological data.The CT values of tumor and vocal fold on plain scan , arterial phase, parenchymal phase enhanced scanning were measured and compared their differences .In combination with the original image and workstation processing image , the tumor location dis-tribution and edge in plain scan , arterial phase and parenchymal phase were observed .Results Early glottic carcinoma located in the anterior portion of the vocal folds in 13 cases, which were involved in the anterior joint in 3 cases, located in front of vocal cords in 9 cases, located at the rear in 5 cases, located in diffuse segment in 2 cases.The plain CT value in tumor and vocal cords flat had no significant difference ( P =0.2316), the tumor was shown a marked contrast enhancement , but, in arterial phase and parenchymal phase, CT value had no significant difference ( P =0.4264).The enhanced CT image of tumor margin in arterial phase was better than that in parenchymal phase .Conclusion For early glottic laryngeal carcinoma , multi-slice spiral CT scan can directly enhance the scanning , and only arterial phase CT scan can clearly show the tumor invasion and the scope for the as -sessment of tumor stage as well as reduce the effective radiation dose received by the patient .