Morphometry of the Thyroid and Cricoid Cartilages in Adults on C.T. Scan

In the present study, C.T. scan was done in 60 living subjects (30 males and 30 females) from region of Haryana who were undergoing C.T. scan for some reason other than larynx. Patients were in age group 20–50 years. A total of eleven measurements of thyroid and cricoid cartilages were taken on C.T. Scan to study sexual dimorphism. All parameters of thyroid cartilage except angle were found to be significantly more in males as compared to female. Thyroid angle was significantly smaller in males. Sex difference was also statistically significant for all parameters of cricoid cartilage except antero-posterior diameter. The measurements in living were also compared with those of cadavers. All of the CT measurements were lower than autopsy measurements. However, the difference was not statistically significantfor most of the measurements.