Due to increasing number of CT examination in routine practice what can be best method to optimize CT dose also what is value and importance of Diagnostic reference level?
The best way to optimize dose levels with in the department would be to have the medical physics team and the manufacturing team look over your equipment and optimize the unit to produce the most diagnostic images for your more common work load at the lowest possible exposure factors. Things like looking in to modulated mA maybe of use.
You could also look into Internal diagnostic reference levels, these are normally desalinated between the department and the medical physics team who will normally set these below the national diagnostic reference levels, this should ensure that you're inherently below the national levels.
It's all about the risk verses benefit argument relating to the benefits gained from the scan, over the risks of radiation exposure. You could always look into tightening your vetting/referral procedures so that only scans that are likely to benefit the patients pathway are performed. As always the best way to limit dose is to not expose.
Kind Regards,
Stephen
Use of iterative reconstruction can help to reduce radiation dose if you have modern equipment. Lower kV would also result in overall less radiation dose.
Regards
Bhartil
See the following paper and thanks
Computed Tomography Dose Optimization Radiol Technol July/August 2014 85:655CT-671CT
Approach to CT Dose Optimization: Role of Registries and Benchmarking. in Quality and safety Imaging Springer series .....should help . ........
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