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4 CONCLUSION
The devices developed herein are at the stage of idea realization, so they need to be improved
in several aspects before applying to clinical cases. First, it is a cost issue. The total device
frame was made of low-cost acryl, posing a potential safety and size issues. It may not be the
optimal design to put on the CT table. Further improvements in material and shape are
necessary.
Second, the angle meter attached for angle check could also cause errors due to a leveling
issue. Concerning the angle adjustment of the sliding mobile laser module, addition of an
automatic operation device using a motor is necessary, so that the angle adjustment could be
done in an outside control room instead of doing it inside the CT room manua ...