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Robust HU-based CT-Ventilation from an Integrated Mass Conservation Formulation.

08:00 EDT 12th September 2019 | BioPortfolio

Summary of "Robust HU-based CT-Ventilation from an Integrated Mass Conservation Formulation."

Computed tomography (CT) ventilation algorithms estimate volume changes induced by respiratory motion. Existing Hounsfield Unit (HU) methods approximate volume change from the measured HU variations between spatially corresponding voxel locations within a temporally resolved CT image pair, assuming that volume changes are caused solely by changes in air content. Numerical implementations require a deformable image registration to determine the inhale/exhale spatial correspondence, a preprocessing lung volume segmentation, a preprocessing high-intensity vessel segmentation, and a post-processing smoothing applied to the raw volume change estimates obtained for each lung tissue voxel.

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Name: Medical physics
ISSN: 2473-4209
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