MRI of Rectal Cancer: An Overview and Update on Recent Advances

作者：Jhaveri Kartik S^*; Hosseini Nik Hooman

来源：American Journal of Roentgenology, 2015, 205(1): W42-W55.

DOI：10.2214/AJR.14.14201

• chemoradiation therapy
• MRI
• rectal cancer
• recurrence
• staging

OBJECTIVE. MRI is the modality of choice for rectal cancer staging. The high soft-tissue contrast of MRI accurately assesses the extramural tumor spread and relation to mesorectal fascia and the sphincter complex. This article reviews the role of MRI in the staging and treatment of rectal cancer. The relevant anatomy, MRI techniques, preoperative staging, post-chemoradiation therapy (CRT) imaging, and tumor recurrence are discussed with special attention to recent advances in knowledge.
CONCLUSION. MRI is the modality of choice for staging rectal cancer to assist surgeons in obtaining negative surgical margins. MRI facilitates the accurate assessment of mesorectal fascia and the sphincter complex for surgical planning. Multiparametric MRI may also help in the prediction and estimation of response to treatment and in the detection of recurrent disease.

• 出版日期2015-7