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Fig. 3 | 3D Printing in Medicine

Fig. 3

From: Utility of virtual monoenergetic images from spectral detector computed tomography in improving image segmentation for purposes of 3D printing and modeling

Fig. 3

Conventional (a) and VMI 40 keV (b) axial SDCT delayed contrast phase images of case 2 left atrial appendage thrombus. The left atrial appendage thrombus (arrow) is better demarcated in the 40 keV VMI compared to the conventional CT. Zeffective SDCT image (c) at the same level shows the effective atomic number value at every voxel which is derived from the photo and scatter values computed from the low and high energy signals. The change in relative atomic number of the thrombus area (arrow, yellow material) relative to the surrounding iodine enhanced material (teal and blue colors) further validates the thrombus composition rather than poor/slow blood flow. (d) The 1:1 scale 3D printed LAA thrombus using 40 keV VMI data and the Formlabs Form 2 standard black resin is shown next to an LAA closure device model for scale

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3D Printing in Medicine

ISSN: 2365-6271

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