3D tangible, intangible and ghost tracts
Keywords: ghost, 3D, scanning, STL, model, teaching, client, education
To explore the value of three dimensional modeling in teaching and client education, the author scanned a frozen equine rectum and reproductive tract using a photographic 3D modeling program (3DSOM). The same process was used to scan an equine pelvis.
Image size: 1417 x 1224px
After the mesh model of the rectum, anus, tract and pelvis had been built, it was re-modeled into a smoothed version of the scanned tissues using the 3D modeling program 3DSMax, being careful not to change basic anatomy. In this manner the tract, rectum and pelvis were re-created in an accurate, true-to-life, true scale representation. Using the resulting 3D mesh, the model was also converted into a stereolithographic (.stl) file which some readers will recognize as being a common file type used for 3D printing. Using a tough and slightly flexible nylon polymer and selective laser sintering (SLS), several models of the tract were printed. See below.
Image size: 1696 x 1022px
Parts of the 3D model have been used for video production such as this entry in LORI or stationary images while the large model has been used for student and client education.
Most recently, the author used the same model to create another potentially useful image for educational purposes. It is shown below.
Image size: 1590 x 803px
Finally, when the model is manipulated so that the SLS printing thickness in minimized, it takes on a radiograph-like appearance (see below). This makes lumens and internal structures such as the cervix and urethra visible; also structures that were modeled to scale. This provides the viewer with a unique perspective of the reproductive tract.
Image size: 1233 x 781px
As mentioned, the author has printed several models of the tract and pelvis for teaching use. The tracts in the image below are about 30 cm long. Although it is possible to print in several colors, it is less expensive to paint the model as desired. To interact with a 3D STL model of this equine uterus and pelvis, click here. Please contact Dr Lofstedt at: lofstedt@upei.ca to report errors in the way this model functions.
Image size: 1152 x 1164px
Finally, to examine the possibility and potential value of creating 3D models for education, visitors may wish to view this video.
Image size: 1152 x 1164px
Finally, to examine the possibility and potential value of creating 3D models for education, visitors may wish to view this video.
