Conclusion IMRT can improve CTV dose distribution and reduce the cardiac dose and volume for the left breast cancer after breast-conserving surgery.

结论左侧乳腺癌保乳术后，调强放疗能改善靶区剂量分布、减少心脏受照剂量和体积。

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Objective To evaluate the value of integrated backscatter (IBS) measurement in detecting early myocardial damage induced by left breast cancer radiotherapy.

目的探讨心肌背向散射积分(IBS)参数评价左乳腺癌放疗早期心脏损伤的价值。

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Conclusion myocardial integrated backscatter is a noninvasive, sensitive, objective method to assess early myocardial damage induced by left breast cancer radiotherapy.

结论心肌背向散射积分参数可无创、敏感、客观地评价左侧乳腺癌放疗对心脏的早期损伤。

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Conclusion myocardial integrated backscatter is a noninvasive, sensitive, objective method to assess early myocardial damage induced by left breast cancer radiotherapy.

结论心肌背向散射积分参数可无创、敏感、客观地评价左侧乳腺癌放疗对心脏的早期损伤。

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