Patients must be well immobilized and precisely aligned with the treatment beam to take full advantage of the dose localization potential.

患者必须很好被固定和精确地被排列以治疗射线利用药量地方化潜力的。

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In order to take advantages of the favorable characteristics of heavy ions like dose localization and high biological efficacy, several kinds of techniques have been developed.

为了利用重离子的优越特性(例如：剂量局域性和高的生物效率)，已经开发了几种技术。

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One of the major disadvantages of MRI is its image distortion, which affects the accuracy of the localization of SRT and the veracity of the dose distribution.

对MRI而言，由于存在着影像扭曲的问题，因此影响了SRT定位的精确性，并进一步影响了剂量分布的准确性。

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