"Rotation Overlap Method" for 3D Wiring in Chronic Total Occlusion.

ABSTRACT: We describe the "rotation overlap method" for 3-dimensional (3D) wiring without orthogonal projections. This method ultilizes "parallax" to resolve wire shaft (WS) and target (TG) relationships according to the 'rotation overlap rule'. Rotate the fluoroscopic view toward the WS: if the WS-TG are seen closer, the WS becomes anterior to the TG (vice versa [away from WS = posterior]). This rule applies to any fluoroscopic rotation under 180°, regardless of axial or oblique to vessel. The "WS-TG closer" criterion replaces orthogonal projections to constrain the WS-TG spatial relationship. The steps for 3D wiring are as follows: For 2 fluoroscopic projections, the view with WS-TG closer is the "closer view," and the other is the "far view". 1) Resolve WS-TG anterior/posterior relationship in th

SUBMITTER: Leung C 

PROVIDER: S-EPMC12011170 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature