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Use of a 3D camera system for precise, automatic patient positioning in CT

By Dr N Saltybaeva & Prof. H Alkadhi

Automatic tube current modulation (TCM) is an important method for the reduction of the radiation dose to which the patient is exposed in CT examinations, while still maintaining
image quality. Optimal implementation of TCM relies on accurate estimates of patient size as derived from projection localizer radiographs, which however can be significantly affected by non-optimal positioning, or off-centering, of the patient.