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Feasibility study on ultra-low dose 3D scout of organ based CT scan planning.

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CT Systems and Application Laboratory, GE Global Research, Niskayuna, NY.
X-ray and CT Laboratory, GE Global Research, Shanghai, China.
Biomedical Image Analysis Laboratory, GE Global Research, Niskayuna, NY.
CT, X-ray and Functional Imaging, GE Global Research, Niskayuna, NY.


3D volumetric CT images hold the potential to become a rich source of information for 3D organ segmentation and far exceed that made available through 2D radiograph images. Acquiring and generating 3D volumetric images for scan preparation purposes, i.e. 3D scout, while delivering radiation dose equivalent to conventional 2D radiograph is challenging. We explore various acquisition parameters and post-processing methods to reduce dose of a 3D scout while reducing the noise and maintaining the edge strength around the target organ. We demonstrated that similar edge strength and noise to the conventional dose CT scan can be achieved with 3D scout acquisition and post-processing while being dose neutral to a 2D scout acquisition.


3D scout; CT acquisition protocol; IQ metric; low dose; organ segmentation

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