PT  - JOURNAL ARTICLE
AU  - R A Levy
AU  - T M Chu
AU  - J W Halloran
AU  - S E Feinberg
AU  - S Hollister
TI  - CT-generated porous hydroxyapatite orbital floor prosthesis as a prototype bioimplant.
DP  - 1997 Sep 01
TA  - American Journal of Neuroradiology
PG  - 1522--1525
VI  - 18
IP  - 8
4099  - http://www.ajnr.org/content/18/8/1522.short
4100  - http://www.ajnr.org/content/18/8/1522.full
SO  - Am. J. Neuroradiol.1997 Sep 01; 18
AB  - 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 stereo-lithography 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.