The accuracy of using MRI in the localization of stereotactic radiotherapy

CT and MRI are the usual methods being used in the localization of stereotactic radiotherapy (SRT). Each of the m has its own advantage. One of the major disadvantages of MRI is its image distortion, which affects the accuracy of the localization of SRT and the veracity of the dose distribution. Therefore, there are many arguments on the use of MRI in the localization. This article reviewed the principle of the use of MRI in the localization, the origin of the distortion, the magnitude of the error and its affecting factors, the corresponding solutions.