A visual acuity rating scale of three categories was devised for each CARP, where 1 was allocated to poor visual acuity, 2 to partial, and 3 to good visual acuity. Before the qualitative evaluation of the STLs, eight different critical anatomical reference points (CARPs) were identified with the assistance of an expert team. Furthermore, only STLs created without manipulation by the same designer were included in the collection. After scrutiny, 35 STLs of individuals ≥15 years of age were selected and included metadata attached to the DICOM file. This collection was scrutinised for inclusion in the image quality evaluation. The image quality of stereolithography (STL) files of CRPM CT scans was evaluated to determine what constitutes good image quality. Therefore, this study was undertaken.Ī collection of CRPM STLs used in the design and manufacturing of craniomaxillofacial prostheses is available. The Centre for Rapid Prototyping and Manufacturing (CRPM) produces most facial prostheses in South Africa but does not have a prescribed optimised CT protocol. Poor quality images result in incorrectly sized prostheses, necessitating repeat imaging and refitting. Prostheses manufacturing requires patients' computed tomography (CT) images. Facial deformities often demand reconstructive surgery and the placement of three-dimensional (3D) printed craniomaxillofacial prostheses.
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