Already, incidents of CT overexposure have attracted widespread academic and media interest in recent years [5, 6] and, given the large doses involved in CT, the importance of DRLs cannot be stressed enough.
In our opinion, quantifying CT doses in terms of an equivalent number of chest radiographs is a tangible method of quantifying the high radiation doses involved in CT imaging, and knowing relative values should be a prerequisite for medical students and referring physicians alike.
Knowledge about radiation doses involved in radiological examinations among referring physicians is poor.
For lower doses involved in diagnostic radiology, epidemiological data are not available to support the LNT model mainly owing to the necessary sample size [ 40].
The frequency with which cancers might follow the much lower doses involved in occupational or environmental exposure to radiation, however, cannot be derived from any available epidemiological surveys.
Our results demonstrate poor knowledge of physicians on radiation doses involved in CT examinations, some among them thinking that MRI involves the highest radiation dose to patients, and lack of awareness on the least radiosensitive age.
These records were used to characterize modifications made to antipsychotic therapy (including starting antipsychotic therapy, discontinuation of antipsychotic therapy and switching antipsychotic medications), and the drugs, cross-tapering strategies, and doses involved in antipsychotic switches.
Given the relatively high radiation doses involved in CT scans, this study, as part of an ongoing epidemiological study into the long-term health effects of CT in young people, [ 9] aimed to assess whether socio-economic variation exists in young people having these scans in Northern England between 1990 and 2002.
