Billy W. Loo, Jr., MD, PhD, DABR
Publication Details
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Reducing 4D CT artifacts using optimized sorting based on anatomic similarity.
Med Phys. 2011; (5): 2424-9
Four-dimensional (4D) computed tomography (CT) has been widely used as a tool to characterize respiratory motion in radiotherapy. The two most commonly used 4D CT algorithms sort images by the associated respiratory phase or displacement into a predefined number of bins, and are prone to image artifacts at transitions between bed positions. The purpose of this work is to demonstrate a method of reducing motion artifacts in 4D CT by incorporating anatomic similarity into phase or displacement based sorting protocols.
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