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Table 2 Measurements of discrete 3D model features

From: Methods for verification of 3D printed anatomic model accuracy using cardiac models as an example

  Length (mm) % Error
Feature Geometry Caliper Digital STL measure Caliper Digital
1 Maximum Diameter 69.64 70.53 69.98 0.48 0.79
2 Wall Thickness 1.78 1.69 1.70 4.46 1.12
Maximum Diameter 70.90 71.48 70.83 0.10 0.92
Minimum Diameter 50.82 52.30 51.12 0.58 2.31
3 Wall Thickness 1.44 1.22 1.40 2.86 12.64
Maximum Diameter 23.56 20.72 23.09 2.04 10.26
4 Wall Thickness 1.94 1.88 2.06 5.64 8.56
  1. A total of 4 different features were measured on a 3D printed model using physical (calipers) and digital photographic measurement strategies. The features were additionally measured from the source model STL file using Autodesk 3D Studio Max. A total of 7 different geometries (model wall thickness and model opening diameters) were measured