Findings demonstrate wide dose variations within and across centres in Nigeria. The results also show CTDI comparable to international standards, but considerably higher DLP and effective doses.

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The study aims at examining the moderating effect of internal control system on the relationship between government revenue (statutory allocation and internally generated revenue) and expenditure. All the sixteen (16) Contribution/ OriginalityThis study significantly contributes to the existing literature by testing the moderating effect of internal control system on the relationship between government revenue and expenditure in Nigeria. The study believes that internal control system may impact on government expenditure, and may moderates the effect of government revenue on its expenditure, hence, the need to carry out such study.