From: Anatomic modeling using 3D printing: quality assurance and optimization
Test object | Test | Dimensions |
---|---|---|
Line pair pattern | Spatial resolution | Line pairs(lp) at 0.5, 1.0, and 2.0 lp/mm along each physical axis |
Concave/Convex surface | Curvilinear surface accuracy | Height-7.5Â mm Length-50Â mm Width-12.5Â mm Depth-10.0Â mm |
Spheres | Shape fidelity | Semi spheres at diameters of 2.5Â mm, 5.0Â mm, and 7.5Â mm |
Cones | Shape fidelity | Positive cone: Bottom diameter-20Â mm Top diameter-10Â mm Height-20Â mm Negative cone: Top diameter-16.5Â mm Bottom diameter-10Â mm Height-7.5Â mm |
Hexagonal Cylinder | Rectilinear geometric accuracy | Width-10Â mm Height-20Â mm |
Positive base | Volumetric accuracy & temporal stability | Width-50Â mm Length-100Â mm Height-5Â mm |
Negative base | Volumetric accuracy & temporal stability | Width-50Â mm Length-100Â mm Height-12.5Â mm |
Ruler | Spatial accuracy | Five markers placed at 10Â mm spacing along physical X and Y edges of phantom on negative base. |
Spiral | Anatomic | Inner diameter-1.8Â mm Outer diameter-2.5Â mm Spiral start-end separation-10Â mm |
Vascular tree | Anatomic | Cylinders of uniform length of 10 mm with diameters of 5 mm, 2.5 mm, 1.25 mm, 0.75 mm and 0.5 mm. Two outer branches at diameters of 2.5 mm and 0.75 mm placed at 45° and 25° respectively to the inner cylinders. |