磁共振成像在直肠癌中的应用进展

Research Progress of MRI in Rectal Cancer

结直肠癌是人类最常见的恶性肿瘤之一,其发病率、死亡率均较高,直肠癌约占1/3。直肠癌的治疗以手术为主,术前进行准确的分期是制定合理治疗方案的关键。在众多的术前检查方法中,磁共振成像是非常重要的检查。随着磁共振技术的发展,出现了高分辨率扫描、扩散加权成像、灌注加权成像等新技术,如何更好地利用这些技术对直肠癌做出更加准确的分期判断,仍是研究的热点和重点。全文就磁共振高分辨率扫描、扩散加权成像及灌注加权成像等技术在直肠癌中的应用进展进行综述。

Colorectal cancer is one of the most common malignant tumors with high incidence and mortality rate;and the rectal cancer accounts for about one third of colorectal cancer. The surgical operation is the main treatment for rectal cancer,and the accurate preoperative staging is critical for the treatment plan,in which MRI is most important. A variety of new techniques of MRI,including high resolution MRI(HR-MRI),diffusion weighted imaging(DWI) and perfusion weighted imaging(PWI) are available now. The application of these new techniques to improve the accuracy of preoperative staging of rectal cancer is the hotspot of research currently. In this review,the research progress of HR-MRI,DWI and PWI in rectal cancer is discussed.