<prompt> Frontal Sinus can be best visualized byCaldwells viewWaters viewTownes viewSchullers view  <response>: A. Caldwells view -frontal sinuses are seen best B. Waters view-maxillary sinus seen best C. Townes view-usually taken for acoustic neuroma and apical petrositis D. Schullers view-to visualise the key area of the mastoid attic, aditus, antrum Ref: Textbook of ENT, Dhingra; 7th edition, of no. 493, 494 