Validation of three-dimensional printed models of intracranial aneurysms

Daniel E. Mantilla, Riccardo Ferrara, Andrés F. Ortiz, Daniela D. Vera, Franck Nicoud, Vincent Costalat

Research output: Articles / NotesScientific Articlepeer-review


Introduction: Three-dimensional (3D) printing has evolved for medical applications as it can produce customized 3D models of devices and implants that can improve patient care. In this study, we aimed to validate the geometrical accuracy of the 3D models of intracranial aneurysms printed using Stereolithography 3D printing technology. Materials and methods: To compare the unruptured intracranial aneurysm mesh between the five patients and 3D printed models, we opened the DICOM files in the Sim&Size® simulation software, selected the region of interest, and performed the threshold check. We juxtaposed the 3D reconstructions and manually rotated the images to get the same orientation when needed and measured deviations at different nodes of the patient and 3D printed model meshes. Results: In the first patient, 80% of the nodes were separated by <0.56 mm and 0.17 mm. In the second patient, the deviations were below 0.17 mm for 80% of the meshes’ nodes. In the next three patients, the deviations were below 0.21, 0.23, and 0.11 mm for 80% of the meshes’ nodes. Finally, the overall deviation was below 0.21 mm for 80% of the mesh nodes of the five aneurysms Conclusions: 3D printed models of intracranial aneurysms are accurate, having surfaces that resemble that of patients’ angiographies with an 80% cumulative deviation below 0.21 mm.

Original languageEnglish
JournalInterventional Neuroradiology
StateAccepted/In press - 2022


  • Aneurysm
  • printing
  • stereolithography
  • three-dimensional


Dive into the research topics of 'Validation of three-dimensional printed models of intracranial aneurysms'. Together they form a unique fingerprint.

Cite this