Computation and Clinical Applications pp Cite as. Robust registration between prone and supine data acquisitions for CT colonography is pivotal for medical interpretation but a challenging problem, especially in sub-optimally prepared patients. This paper introduces a prone and supine registration method that aims to overcome the difficulties posed by differences in luminal distension and bowel cleansing. The endoluminal surface is iteratively deformed using thin plate spline interpolation in order to increase similarity between prone and supine surfaces. Iterative deformation allows the re-computation of surface curvatures and, therefore, surface features to resemble one another more closely. Therefore, the similarity between surfaces increases with each optimization step when running a subsequent intensity-based registration in cylindrical space. Improved spatial alignment of endoluminal surfaces and better registration accuracies are shown in a limited number of challenging cases. Unable to display preview.
This page was enrolled in the Residents and Fellows contest. Capsular bag distension syndrome CBDS i. One large retrospective study found that eyes with axial lengths greater than 25 mm were at greater risk for CBDS. Almost all cases are associated with continuous curvilinear capsulorhexis.
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