小肠MRI的临床应用和进展

Clinical application and advancement of small-bowel MRI

随着医学影像学的发展,小肠疾病越来越需要多种影像学检查技术的综合诊断,传统的小肠造影与CT扫描各有优缺点;由于MRI具有无射线辐射、无碘对比剂过敏和软组织对比度好的优点,而且近几年MRI软、硬件技术快速发展,不但扫描速度大大增快,完全可以克服呼吸运动伪影和肠蠕动伪影的干扰,而且图像分辨率越来越高,使之应用于小肠疾病的诊断成为可能并逐渐增多。本文即对近几年小肠MRI的检查技术、常用扫描序列、肠道对比剂及其临床应用作一综述,以便全面了解MRI在小肠疾病诊断中的价值及其将来可能的发展趋势。

Evaluation of small-bowel disease need increasingly multiple imaging techniques with the development of medical imaging. Conventional enterography and CT have both advantages and disadvantages. Owing to its no X-ray radiation, no iodic allergic response and excellent soft-tissue contrast, as well as the rapid development of software and hardware, which makes high resolution of image and overcomes artifacts of breath and bowel peristalsis, MRI is used to evaluate small--bowel disease more and more frequently. So the examination techniques, common scan sequences, intraluminal contrast medium and clinical application of small-bowel MRI are reviewed in this article so that we have a knowledge of the diagnostic value of small- bowel MRI and its tendency in the future.