CT-generated porous hydroxyapatite orbital floor prosthesis as a prototype bioimplant

Richard A. Levy, Tien Min G. Chu, John W. Halloran, Stephen E. Feinberg, Scott Hollister

Research output: Contribution to journalArticle

65 Scopus citations


Hydroxyapatite bioceramic was used for the manufacture of an orbital floor prosthesis from spiral CT data acquired transaxially at 1-mm beam collimation, pitch of 1, and 0.2-mm reconstruction intervals. CT data were converted to vector file format for subsequent prosthesis manufacture on a stereolithography machine. The orbital floor prosthesis was engrafted onto an acrylic model of the orbit as a qualitative indication of its overall accuracy. High anatomic accuracy was achieved, as determined by visual inspection. Cross-hatching of the vector file data allowed a porous internal architecture of the prosthesis. Refinements in chemical structure of the hydroxyapatite bioceramic are expected to enhance mechanical properties.

Original languageEnglish (US)
Pages (from-to)1522-1525
Number of pages4
JournalAmerican Journal of Neuroradiology
Issue number8
StatePublished - Sep 1 1997



  • Eyes, surgery
  • Orbits, computed tomography

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology

Cite this

Levy, R. A., Chu, T. M. G., Halloran, J. W., Feinberg, S. E., & Hollister, S. (1997). CT-generated porous hydroxyapatite orbital floor prosthesis as a prototype bioimplant. American Journal of Neuroradiology, 18(8), 1522-1525.