Objective to investigate the relationship between X-ray manifestations of breast cancer, pathology and X-ray classification, in order to improve the diagnostic level of breast cancer.

目的探讨乳腺癌钼靶x线表现、X线分型和病理关系，以提高乳腺癌诊断水平。

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Methods We inspected the level of radiation protection of medical X-ray rooms in 202 medical institutes of Yibin city and the personal dosage of those who worked in X-ray rooms.

方法对宜宾市202家医疗单位医用X射线机房的辐射防护水平进行现场测定，对从业人员外照射个人剂量进行现场调查。

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Conclusion Radiation injuries may effectively decreased with reducing X-ray tube voltage and exposure level under the precondition of X-ray image quality to be guaranteed.

结论在保证X线图像质量前提下，降低X射线管电压和曝光量，可以有效地减少放射性损害。

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There are two types one bounces electromagnetic waves off the body to create an image like this and the other uses backscatter technology to project low level X-ray beams over the body resulting in images like this.

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These produce radiation at about the level of one dental X-ray in the immediate vicinity and quickly dissipate.

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