Automated measurement of right/left main-bronchus take-off angles from CT
airway segmentations (TotalSegmentator trachea label → skeleton → bifurcation-aware
direction fit). Each report renders the raw segmentation mesh with no smoothing or
decimation, so a bad scan or a bad mask is visible at a glance. Built as an aid for
single-lung-intubation planning.
RAW mesh QC3D take-off + axial bearingprogrammatic mesh calloutssubcarinal angle
Featured — full-resolution CAP scan
CAP — 0.77×0.77×2.0 mm
RIGHT 34° @ 236°LEFT 22° @ 131°subcarinal 54°main bronchus R 19 mm / L 22 mm
Bifurcation detected by perpendicular-plane lumen
counting; the direction fit stops at the first downstream branch. Arrows and call-outs are
placed by deterministic world→pixel projection, not vision.
Cohort — TotalSegmentator example subjects & phantom
Not for clinical decision-making. Research / engineering use only.
Subjects shown are TotalSegmentator public example data and a synthetic phantom — no
patient data. The raw mesh is shown without smoothing so segmentation defects remain visible;
angle epidemiology from this small set should not be generalized.