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功能MRI在食管癌分期及放化疗中的应用研究 |
黄一凡,钱立庭 |
230009 合肥,安徽医科大学附属安徽省立医院安徽省肿瘤医院放疗科 |
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摘要 食管癌是世界第8大恶性肿瘤,且发病率在迅速增长[1]。准确的术前分期、精确的靶区勾画和及时的疗效评估,在判断食管癌患者预后及制定个体化治疗决策中具有重要意义。MRI是一种无辐射、无创伤的检查手段,早期由于成像速度慢及伪影大等问题,在体部肿瘤中应用价值有限。随着软硬件技术提高,如快速自旋回波序列及快速采集技术的发展,生理门控的使用,超顺磁性氧化铁等新型造影剂的应用,高分辨率三维稳态扰相成像序列、DWI、DCEMRI等功能成像的开发,不但明显缩短了成像时间,而且提高了成像质量。笔者主要概述功能MRI在食管癌分期、放疗靶区勾画、疗效评估及判断预后方面的价值。
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收稿日期: 2014-01-04
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通讯作者:
钱立庭
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