 The outcome and accuracy of CTY may be improved with better preparedness and pre-procedural identification of the neck landmarks for CTY before deciding the method of anesthetic. This is especially true in patients with anatomical features of difficult airway, who may be the ones more likely to have a difficult airway or require an emergency CT.In this patient population incorrect localization of the CTM may lead to significant airway morbidity or failure to quickly establish an airway. 