RT Journal Article SR Electronic T1 Airway model reconstructed from CT images JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP PA4404 DO 10.1183/13993003.congress-2016.PA4404 VO 48 IS suppl 60 A1 Fernandez-Tena, Ana A1 Fernandez-Francos, Joaquin A1 Agujetas-Ortiz, Rafael A1 Casan-Clara, Pere YR 2016 UL http://erj.ersjournals.com/content/48/suppl_60/PA4404.abstract AB Objective: reconstruct the airway of a patient from CT images to make a 3D-prototypeMethod: a software package (3D Slicer, www.slicer.org) for medical image analysis was used. CT images were imported (DICOM format, Digital Imaging and Communications in Medicine) and segmented identifying the structures that belongs to each pixel. DICOM images consist of information in a grey scale value which is associated with a pixel of the image. There is a direct relationship between the density of each structure and the grey value assigned to the pixels. By grouping pixels with similar shades, the image data can be segmented into anatomical structures. The trachea is located in the coronal cut and then bronchi are segmented (Fig1a). A mask was created with a pixel density that differed bronchi from the rest of tissue. Next, the airway was emptied (Fig1b). Then, the graphical model was exported to a 3D-printer, where an exact replica of the airway was made.Results: A lung model in polylactic acid from trachea to subsegmental bronchi was obtained (Fig1C). It can be used for fluid dynamic studies or particle deposition tests. Tracheal endoprosthesis can be developed using biocompatible materials. Also it can be used as educational material.Conclusions: Airway models of patients can be developed using a software for CT image processing. This model can be 3D-printed for multiple purposes: educational materials, studies of drug deposition, development of tracheal endoprosthesis...