How to choose between Gamma Knife, Radiofrequency Knife, Tom, Nori Knife or Proton Knife? Gamma knife is characterized by precision. Gamma knife treatment should be preferred for functional diseases. For example, trigeminal neuralgia. Tom, Nori Knife and Proton Knife are not an option. Radiofrequency knife is mostly fractionated and can treat head and body lesions, with the advantage that larger intracranial lesions can be treated. It is an option for malignant tumors that are less demanding in terms of precision. Tom is actually tomotherapy, which is not recommended for benign intracranial lesions, and can be considered for some malignant intracranial lesions. It cannot be considered as stereotactic radiosurgery. For malignant tumors in the body can be chosen. Nori knife: for X knife, can do intracranial malignant lesions, for fractionated treatment. Larger lesions can be. Proton knife: It is expensive and has some advantages in principle. It is recommended to treat larger intracranial malignant tumors. Such as chordoma has good effect. Body tumors can be treated.