[Intensity-modulated radiation therapy (IMRT)].
[Intensity-modulated radiation therapy (IMRT)].
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DOI：
10.1201/9781420034530.ch1
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发表时间：
2004-10
期刊：
影响因子：
--
通讯作者：
Naoki Nakamura;N. Shikama;Masahiko Oguchi
中科院分区：
文献类型：
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作者：
Naoki Nakamura;N. Shikama;Masahiko Oguchi
调强放射治疗（IMRT）是一种新型的适形放射治疗，它是基于使用非均匀的放射束强度，通过逆规划优化的。IMRT能达到最佳剂量分布，可显著改善临床疗效。然而，由于IMRT的复杂性，它的正确传递并不容易。如果IMRT使用不当，结果可能比传统疗法更糟糕。这就是为什么临床和物理质量保证（QA）应该严格执行IMRT。在日本，IMRT的临床使用只允许用于前列腺癌、头颈癌和脑肿瘤，作为健康保险治疗。目前，日本只有大约50家机构可以使用IMRT。
Intensity-modulated radiation therapy (IMRT) is a new type of conformal radiotherapy which is based on the use of non-uniform radiation beam intensities, optimized by inverse planning. IMRT can achieve the optimal dose distributions and may improve the clinical outcomes dramatically. However, it is not easy to deliver IMRT properly because of its complexity. If IMRT is used inadequately, the outcome might be worse than conventional therapies. This is why the clinical and physical quality assurance (QA) should be done strictly to deliver IMRT. The clinical use of IMRT is permitted only for prostate cancers, head and neck cancers and brain tumors as health insurance treatments in Japan. IMRT is available in only about 50 institutions for now in Japan.