CT appendicitis examines the shape of the appendix. If a patient has appendicitis the diagnosis can be basically confirmed by CT examination. During CT examination it is obvious that the patient’s appendix is swollen and it is also possible to find fecal stones in the appendiceal canal. If the obstructive pressure in the patient’s body is high, changes in the fluid around the appendix can also be seen in CT, which can be used as a basis for determining the severity of the condition. If a patient has appendicitis with symptoms such as perforation or suppuration, the progression of the disease can be judged by the location of the greater omentum and also by the change in fluid density. Patients with appendicitis are treated in different ways depending on their condition, and CT examinations are an important basis for doctors to judge the condition and determine the plan.