title: In vitro and in vivo imaging of ultra-high-molecular-weight polyethylene orbital implants.
abstract: The aim of this study is to compare magnetic resonance imaging (MRI) with computed tomography (CT) for visualization of an orbital alloplastic prosthesis made of ultra-high-molecular-weight polyethylene (UHMW-PE) both in vitro and in vivo. A study of 15 test implants from UHMW-PE visualized in vitro in CT and MRI and an in vivo visualization in a patient who suffered from orbital injury and underwent reconstructive surgery is presented. The postsurgery MRI showed the UHMW-PE material clearly, with no significant artifacts. The surrounding tissues could be satisfactorily evaluated. The CT scans did not present the graft material. Both techniques were sufficient tools for in vitro evaluation of the shape and measurement of the prosthesis.
authors.forename: Marek
authors.initials: M
authors.lastname: Olszycki
authors.forename: Marcin
authors.initials: M
authors.lastname: Kozakiewicz
authors.forename: Marcin
authors.initials: M
authors.lastname: Elgalal
authors.forename: Agata
authors.initials: A
authors.lastname: Majos
authors.forename: Ludomir
authors.initials: L
authors.lastname: Stefanczyk
mesh_terms: D016477:Artifacts; D001672:Biocompatible Materials / Q000737:chemistry*; D005131:Eye Injuries / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D008279:Magnetic Resonance Imaging; D020273:Orbital Implants; D011095:Polyethylenes; D019919:Prosthesis Implantation / Q000379:methods; D019651:Plastic Surgery Procedures / Q000379:methods*; D014057:Tomography, X-Ray Computed
chemical_list: D001672:Biocompatible Materials; D011095:Polyethylenes; C111601:ultra-high molecular weight polyethylene