Manfredi R, Barbaro B, Natale L
Istituto di Radiologia, Università Cattolica del S. Cuore, Policlinico, A. Gemelli, Roma, Italy.
Rays. 1995 Jan-Mar;20(1):62-72.
Magnetic Resonance Imaging is a rapidly developing procedure suitable for rectal cancer staging. Initial results are extremely encouraging in T staging while at present this is not so in N staging. MRI is useful in the differentiation between stage T2 and T3 because images can be obtained in multiple planes, tissue contrast is high and thus scans are always perpendicular to the tumor base. However there is a trend to overstaging of rectal cancer frequently due to the concomitant perirectal inflammatory reaction. In a near future, the extensive use of surface coils will certainly increase spatial resolution with consequently improved accuracy.
磁共振成像（MRI）是一种快速发展的适用于直肠癌分期的检查方法。在T分期方面，初步结果非常令人鼓舞，而目前在N分期方面情况并非如此。MRI在区分T2期和T3期方面很有用，因为可以在多个平面获取图像，组织对比度高，因此扫描总是垂直于肿瘤基底部。然而，由于伴随的直肠周围炎症反应，直肠癌分期常有过度分期的趋势。在不久的将来，表面线圈的广泛使用肯定会提高空间分辨率，从而提高准确性。
