Evaluation of Precision and Accuracy Assessment of Different 3-D Surface Imaging Systems for Biomedical Purposes

摘要: Three-dimensional (3-D) surface imaging has gained clinical acceptance, especially in the field of cranio-maxillo-facial and plastic, reconstructive, aesthetic surgery. Six scanners based on different scanning principles (Minolta Vivid 910®, Polhemus FastSCAN™, GFM PRIMOS®, TopoCAM®, Steinbichler Comet® Vario Zoom 250, 3dMD DSP 400®) were used to measure five sheep skulls sizes. In three areas with varying anatomical complexity (areas, 1 = high; 2 = moderate; 3 = low), 56 distances between 20 landmarks are defined each skull. Manual measurement (MM), coordinate machine measurements (CMM) computer tomography (CT) define a reference method for further precision accuracy evaluation 3-D systems. MM showed high correlation CMM CT (both r = 0.987; p < 0.001) served as method. 910® highest over all complexity; 400® demonstrated being most accurate 1 3, area 2. accordance measured distance length, devices present higher large lower degrees short distances. general, associated assessment accuracy, suggesting that optimal results, types should be applied specific applications medical problems according their special construction designs characteristics.