脑转移瘤的MRI研究进展

Research Progress of MRI in Brain Metastasis

脑转移瘤是颅内肿瘤的一种,多指原发于身体其他部位的肿瘤细胞通过某种途径转移到颅内,并在颅内形成新的病灶。早期诊断及鉴别脑转移至关重要,以便及时治疗,延长患者生命及提高其生存质量。MRI具备无辐射、多方位、多序列及软组织分辨率高等优点,尤其是功能成像的发展及新技术的应用使其在脑转移瘤的诊断、鉴别诊断、监测和评估预后中发挥了重要作用。本文就MR功能成像及新技术在小转移灶的检测、脑转移的鉴别诊断及疗效监测中的应用予以综述。

Brain metastatic tumor is a kind of intracranial tumor.It refers to the tumor cells which originated in other parts of the body through some way to transfer to the brain and form new foci in the brain.Early diagnosis and differentiation of brain metastasis is essential for timely treatment,prolongation of life and improvement of patients undefined quality of life.MRI has the advantages of non-radiation,multi-directional,multi-sequence and high soft tissue resolution.Especially,the development of functional imaging and the application of new techniques make it play an important role in the diagnosis,differential diagnosis,monitoring and evaluation of the prognosis of brain metastases.This review focuses on the application of MR functional imaging and new techniques in the detection of small metastases,differential diagnosis of brain metastases and curative effect monitoring.