3, Development ofotorhinolaryngology: CT, MRI, microscope, endoscope, navigation system, head neck surgery, otoneurosurgery, skull base surgery, rhinoneurosurgery The educational aims of otorhinolaryngology Aims: Methods of examination for ORL, diagnosis treatment, and prevention of the diseases in Orl3、Development of otorhinolaryngology： CT, MRI, microscope, endoscope, navigation system, head neck surgery, otoneurosurgery, skull base surgery, rhinoneurosurgery.….. The educational aims of otorhinolaryngology Aims：Methods of examination for ORL，diagnosis, treatment, and prevention of the diseases in ORL