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CPR · Straightened view

CPR · Straightened view

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Distance: — / — mm | Delta: 0.0 mm
Thickness 3 mm

⏳ CPR straightened view not available.

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Measurements

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△ Aortic Root Workflow

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Annulus mode
Tricuspid (3 markers). Marker completeness: 0/3 (incomplete).
Annulus ref & ostia
Cusp nadirs (R / N / L)
R
N
L
RCA
LCA
R-N
N-L
L-R
Active: R nadir (right coronary cusp insertion). Click on MPR.
Workflow steps
Progress: 1/8
1. MPR Setup
Keep axial, coronal and sagittal visible at the same time. Crosshair lines stay locked and orthogonal (90 degrees).
Status: done
Use "Aortic Root Workflow" to perform a structured annulus and coronary clearance review before final report approval.
Measurements
R: --
N: --
L: --
RCA ostium: --
LCA ostium: --
Commissure R-N: --
Commissure N-L: --
Commissure L-R: --
Max Ø
--
Min Ø
--
Avg Ø
--
Area
--
Perimeter -- mm
Hinge-point distances (R/N/L)
R – N-- mm
N – L-- mm
R – L-- mm
Coronary heights (basal plane)
RCA
--
LCA
--
Risk thresholds
Oblique MPR
Rotation shortcuts (active viewport): Q/E roll, W/S pitch, A/D yaw. Mouse: drag reference line (no modifiers); Alt+drag pitch/yaw; Shift+Alt+drag roll.
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Clinical Summary

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△ Annulus R / N / L + Valve Elements — Instrukcja

Purpose

This integrated workflow section enables measurement of the aortic annulus dimensions by marking three hinge points of the aortic valve leaflets: R (Right Coronary cusp), N (Non-Coronary cusp) and L (Left Coronary cusp). Optionally, coronary ostia (RCA, LCA) and valve commissures (R-N, N-L, L-R) can be marked for complete valve anatomy context. It works inside the same Aortic Root Workflow panel.

Steps
  1. Activate Aortic Root Workflow in the toolbar.
  2. In the same right panel, use the △ Annulus R/N/L + Valve Elements section and select the active marker button.
  3. Keep Axial/Coronal/Sagittal linked around one crosshair (multiplanar reformats). Use Oblique MPR if needed and keep Lock 90 degrees ON for orthogonal geometry.
  4. Click R, then click the right coronary cusp hinge nadir in MPR.
  5. Click N, then click the non-coronary cusp hinge nadir.
  6. Click L, then click the left coronary cusp hinge nadir.
  7. After marking R+N+L, annulus results are calculated automatically: Min Ø, Max Ø, Avg Ø, Area, Perimeter and hinge-point distances.
  8. Optional — click RCA ostium and mark the right coronary artery ostium, then LCA ostium for the left coronary artery. Coronary heights will be calculated (perpendicular distance from the basal plane).
  9. Optional — mark valve commissures: R-N, N-L, L-R. These points are stored for valve morphology review and audit traceability.
  10. Click 💾 Save to report to add the measurements to the study report.
How are values calculated?
MetricMethod
Max ØLongest of the three hinge-point distances (R–N, N–L, R–L)
Min ØTriangle height to the longest side: 4 × S / dmax
Avg ØCircumscribed circle diameter on 3 points: 2R = (d1 · d2 · d3) / (2S)
AreaEllipse: π · a · b, where a = Max/2, b = Min/2
PerimeterRamanujan's approximation for an ellipse
RCA / LCA LPerpendicular distance from the ostium to the basal plane (R+N+L)
Clinical tips
  • Mark hinge points at the same level as the annulus plane — not the leaflet tips.
  • Use the view with optimal symmetry of all three leaflets (cusp symmetry view).
  • Coronary height < 14 mm is flagged with a warning ⚠.
  • The 3-point measurement is an approximation — for full planimetry use the ROI tool on the same plane.
  • Click any button (R / N / L / RCA / LCA / commissures) again to correct a marked point.

Values are for guidance only and do not replace clinical assessment.