Understanding natural background radiation level, as the major source of human exposure to ionizing radiation is important because of its impact on health. A number of studies have assessed natural background radiation level in many countries.
Background technologies w for electronic p quantifying int Methods: In the prostate gl complication a captured, and p expansions wer Results: FMs mm and 5.5 m clinical target v directions were Conclusion:
We read the article entitled "Impact of hydrogel peri-rectal spacer insertion on prostate gland intra-fraction motion during 1.5 T MR-guided stereotactic body radiotherapy" with great interest. In that study, the author reported that there is a statistically significant difference in the rotational antero-posterior shifts between the spacer and the nonspacer groups. Also, there was no statistically significant difference between the groups in terms of translational shifts. However, there are some points about the study. In this letter, we aimed to clarify these points.
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