Fig. 6.

3D heart models CT scanned using a custom heart holder. Heart models were CT scanned for an end-to-end verification of the final 3D model back to the original DICOM images. A custom heart holder was created from source DICOM images to ensure that the model was imaged in the same orientation and spatial position as the original anatomy. Top row: (left) 3D printed heart and 3D printed holder, created on a Form2 printer, (middle) DICOM image from the CT scan of the 3D model, and (right) DICOM image from the original patient study, with the 3D model DICOM overlaid for comparison. (Of note, this model was hollowed to save material, and the specular foci within the center of the model represent internal support structures.) Bottom row: same as above, but in this case, the heart and holder were printed on a Connex 3 Objet 350 printer. This strategy allowed for verification of the model creation pipeline for 2 separate printing techniques. (Of note, this model is filled with internal support material, which on this printer is laid down uniformly, in contrast to the strut-like supports of the Form2 model)