Background
Automated patient centering is crucial in CT scans to ensure quality examination and optimal functioning of the bowtie filter. Recently, 3D cameras have been installed on CT scanners to help operators center patients correctly.
Study Purpose
This study assesses the impact of using additional mattresses of different thicknesses on patient centering proposed by a 3D camera and its effect on radiation dose and image noise.
Methods
An anthropomorphic phantom was placed on mattresses of varying thicknesses on a CT scanner table. The automated patient centering proposed by a 3D camera was analyzed, and image noise and radiation dose were assessed using automatic slice-by-slice image analysis software.
Results
The study found that the use of additional mattresses resulted in incorrect patient positioning, leading to increased radiation dose and image noise. Manual correction of patient centering was necessary to avoid these issues.
Manual:
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