Prospective cross sectional study on anatomical variation with special emphasis on critical anatomical landmark in patients undergoing multi detector computed tomography of paranasal sinuses: Anatomical variation in CT PNS. GAIMS J MED SCI [Internet]. 2022 Dec. 28 [cited 2025 Oct. 25];3(1 (Jan-Jun):13-8. Available from: http://gjms.gaims.ac.in/ojs/index.php/gjms/article/view/51