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  1. Please note the democratiz3D service was previously named "Imag3D" In this tutorial you will learn how to quickly and easily make 3D printable bone models from medical CT scans using the free online service democratiz3D®. The method described here requires no prior knowledge of medical imaging or 3D printing software. Creation of your first model can be completed in as little as 10 minutes. You can download the files used in this tutorial by clicking on this link. You must have a free Embodi3D member account to do so. If you don't have an account, registration is free and takes a minute. It is worth the time to register so you can follow along with the tutorial and use the democratiz3D service. >> DOWNLOAD TUTORIAL FILES AND FOLLOW ALONG << Both video and written tutorials are included in this page. Before we start you'll need to have a copy of a CT scan. If you are interested in 3D printing your own CT scan, you can go to the radiology department of the hospital or clinic that did the scan and ask for the scan to be put on a CD or DVD for you. Figures 1 and 2 show the radiology department at my hospital, called Image Management, and the CDs that they give out. Most radiology departments will have you sign a written release and give you a CD or DVD for free or with a small processing fee. If you are a doctor or other healthcare provider and want to 3D print a model for a patient, the radiology department can also help you. There are multiple online repositories of anonymized CT scans for research that are also available. Figure 1: The radiology department window at my hospital. Figure 2: An example of what a DVD containing a CT scan looks like. This looks like a standard CD or DVD. Step 1: Register for an Embodi3D account If you haven't already done so, you'll need to register for an embodi3d account. Registration is free and only takes a minute. Once you are registered you'll receive a confirmatory email that verifies you are the owner of the registered email account. Click the link in the email to activate your account. The democratiz3D service will use this email account to send you notifications when your files are ready for download. Step 2: Create an NRRD file with Slicer If you haven't already done so, go to slicer.org and download Slicer for your operating system. Slicer is a free software program for medical imaging research. It also has the ability to save medical imaging scans in a variety of formats, which is what we will use it for in this tutorial. Next, launch Slicer. Insert your CD or DVD containing the CT scan into your computer and open the CD with File Explorer or equivalent file browsing application for your operating system. You should find a folder that contains numerous DICOM files in it, as shown in Figure 3. Drag-and-drop the entire DICOM folder onto the Slicer welcome page, as shown in Figure 4. Click OK when asked to load the study into the DICOM database. Click Copy when asked if you want to copy the images into the local database directory. Figure 3: A typical DICOM data set contains numerous individual DICOM files. Figure 4: Dragging and dropping the DICOM folder onto the Slicer application. This will load the CT scan. Once Slicer has finished loading the study, click the save icon in the upper left-hand corner as shown in Figure 5. One of the files in the list will be of type NRRD. make sure that this file is checked and all other files are unchecked. click on the directory button for the NRRD file and select an appropriate directory to save the file. then click Save, as shown in Figure 6. Figure 5: The Save button Figure 6: The Save File box The NRRD file is much better for uploading then DICOM. Instead of having multiple files in a DICOM data set, the NRRD file encapsulates the entire study in a single file. Also, identifiable patient information is removed from the NRRD file. The file is thus anonymized. This is important when sending information over the Internet because we do not want identifiable patient information transmitted. Step 3: Upload the NRRD file to Embodi3D Now go to www.embodi3d.com, click on the democratiz3D navigation menu and select Launch App, as shown in Figure 7. Drag and drop your NRRD file where indicated. While NRRD file is uploading, fill in the "File Name" and "About This File" fields, as shown in Figure 8. Figure 7: Launching the democratiz3D application Figure 8: Uploading the NRRD file and entering basic information To complete basic information about your NRRD file. Do you want it to be private or do you want to share it with the community? Click on the Private File button if the former. If you are planning on sharing it, do you want it to be a free or a paid (licensed) file? Click the appropriate setting. Also select the License Type. If you are keeping the file private, these settings don't matter as the file will remain private. Make sure you accepted the Terms of Use, as shown in Figure 9. Figure 9: Basic information fields about your uploaded NRRD file Next, turn on democratiz3D Processing by selecting the slider under democratiz3D Processing. Make sure the operation CT NRRD to Bone STL is selected. Leave the default threshold of 150 in place. Choose an appropriate quality. Low quality produces small files quickly but the output resolution is low. Medium quality is good for most applications and produces a relatively good file that is not too large. High quality takes the longest to process and produces large output files. Bear in mind that if you upload a low quality NRRD file don't expect the high quality setting to produce a stellar bone model. Medium quality is good enough for most applications. If you wish, you have the option to specify whether you want your output file to be Private or Shared. If you're not sure, click Private. You can always change the visibility of the file later. If you're happy with your settings, click Save & Submit Files. This is shown in Figure 10. Figure 10: Entering the democratiz3D Processing parameters. Step 4: Review Your Completed Bone Model After about 10 to 20 minutes you should receive an email informing you that your file is ready for download. The actual processing time may vary depending on the size and complexity of the file and the load on the processing servers. Click on the link within the email. If you are already on the embodied site, you can access your file by going to your profile. Click your account in the upper right-hand corner and select Profile, as shown in Figure 11. Figure 11: Finding your profile. Your processed file will have the same name as the uploaded NRRD file, except it will end in "– processed". Renders of your new 3D model will be automatically generated within about 6 to 10 minutes. From your new model page you can click "Download this file" to download. If you wish to share your file with the community, you can toggle the privacy setting by clicking Privacy in the lower right-hand corner. You can edit your file or move it from one category to another under the File Actions button on the lower left. These are shown in Figure 12. Figure 12: Downloading, sharing, and editing your new 3D printable model. If you wish to sell your new file, you can change your selling settings under File Actions, Edit Details. Set the file type to be Paid, and specify a price. Please note that your file must be shared in order for other people to see it. This is shown in Figure 13. If you are going to sell your file, be sure you select General Paid File License from the License Type field, or specify your own customized license. For more information about selling files, click here. Figure 13: Making your new file available for sale on the Embodi3D marketplace. That's it! Now you can create your own 3D printable bone models in minutes for free and share or sell them with the click of a button.If you want to download the STL file created in this tutorial, you can download it here. Happy 3D printing!
  2. Dita3d

    Dental 440

    Version 1.0.0

    4 downloads

    Find a best way of rander, .stl, bone, axial, ct, scan, frontal, temporal, parietal, occipital, petrous, ridge, mastoid, cells, paranasal, sinuses, maxillary, sphenoid, ethmoid, clinoid, apophysis, atlas, axis, cervical, spine, neck, nasal, septum, maxilla, mandible, upper, lower, incisor, molar, premolar, incisor, molar, premolar, canine, hard, palate,

    Free

  3. Version 1.0.0

    3 downloads

    STL testing, .stl, testing, maxilla, bone, 3d, model, .stl, printable, teeth, angle, body, edentula, partial, incisor, molar, premolar, canine

    Free

  4. Version 1.0.0

    379 downloads

    This 3D printable model of a human heart was generated from a contrast enhanced CT scan. This model is an improvement over a prior version (here). It shows the heart with slices cut in the anatomical transverse plane. If you are interested in a heart with short-axis slices, check out my short-axis stackable slice model here. Notches have been added to ensure the slices fit together and do not slide against each other. The model demonstrates the detailed anatomy of the human heart in exquisite detail. Each slice stacks on top of the prior slice to form a complete human heart. Individual slices show the detailed cardiac anatomy of the right and left ventricles, and right and left atria, and outflow tracts. Perfect for educational purposes. It has been validated as printable on an Ultimaker 3 Extended printer. Technical parameters: manifold STL (watertight) vertices: 462576 triangles: 925800 dimensions: 15.1 x 15.2 x 10.5 cm

    $9.99

  5. MMMMATT

    Spine full

    Version 1.0.0

    115 downloads

    from cat scan, bone, stl, dicom, 3dmodel, lumbar, spine, vertebrae,

    Free

  6. Version 1.0.0

    669 downloads

    This Brain model was created from a high resolution MRI scan. The model includes the cerebrum. The cerebellum and brain stem are not depicted. The model has been made hollow, with 4 mm wall thickness to save on material when 3D printing. The model is full-size. It has been successfully printed at full size on an Ultimaker 3 Extended printer, and at 95% size on a Formlabs Form 2 printer. Technical parameters: Vertices: 350725 Triangles: 701950 Size: 17.9 x 13.4 x 11.5 cm

    Free

  7. Version

    951 downloads

    This full-size skull with web-like texture was created from a real CT scan. The beautiful lace-like structure not only makes the piece aesthetically interesting and strong, but also reduces material cost when 3D printing. The file is in STL format. This is the full-size version. A half-size version is also available here. Please share your 3D printable creations in the File Vault as I have shared mine with you. Feel free to print this model for your own personal use but please do not use this file for commercial purposes.

    Free

  8. Version

    834 downloads

    This half-size skull with web-like texture was created from a real CT scan. The beautiful lace-like structure not only makes the piece aesthetically interesting and strong, but also reduces material cost when 3D printing. The file is in STL format. This is the half-size version. A full-size version is also available here. Please share your 3D printable creations in the File Vault as I have shared mine with you. Feel free to print this model for your own personal use but please do not use this file for commercial purposes.

    Free

  9. Version 1.0.0

    22 downloads

    CT HAND - stl file processed hand, wrist, bone, 3dmodel, stl, upper, limb, print

    Free

  10. RAVI MALIK

    TEST PRINT

    Version 1.0.0

    2 downloads

    Model of maxilla and mandible for test printing, maxilla, mandible, .stl, teeth, canine, incisor, molar, premolar, ct, scan, without, contrast, lower, turbinate, nasal, vomer, maxillary, sinus,

    Free

  11. Nunuwbie

    nuri

    Version 1.0.0

    0 downloads

    rahang, paranasal, sinuses, bone, ct, scan, without, contrast, coronal, septum, nasal, maxillary, upper, lower, teeth, hard, palate, coronoid, process, tumor, ear, temporomandibular, joint, muscles, mandible, maxilla, .stl, 3d, model,

    Free

  12. Raul Alfredo Borracci

    Pulmonary artery sarcoma resected

    Version 1.0.0

    2 downloads

    Pulmonary artery sarcoma after surgical resection, ct, scan, with, contrast, .stl, axial, dicom, bone, chest, thorax, pulmonary, trunk, sarcoma, artery, surgical, resection, heart, ventricle, auricle, deltoid, pectoris, major, lesser, axillary, carotid, subclavian, trachea, esophagus, bronchi, lung, esophagus, pancreas, small, bowell, ribs, portal, vessels, cava, dorsal, lumbar, spine, transverse, spinous, process

    Free

  13. Version

    465 downloads

    This half-size half-skull model shows detailed skull anatomy, including the cervical spine, skull base foramina, paranasal sinuses, and orbit. Perfect for teaching and as a discussion piece. Available for download in full and half size, STL and COLLADA formats. Please download and modify! Share your new creation by uploading to Embodi3D!

    Free

  14. Version

    3,585 downloads

    UPDATE: There is an improved tutorial that shows you how to create 3D printable bone models even more easily and for free on any operating system. Click here to learn more. This file pack contains files to accompany the tutorial "Creating 3D Printable Models from Medical Scans in 30 Minutes Using Free Software: Osirix, Blender, and Meshmixer." Download the files to follow along with the tutorial and create a 3D printed model yourself! If you haven't registered, please do so. Registration is free and only takes a minute. Included files: TCGA-06-5410 sharp.zip - contains the DICOM files with an anonymized research CT scan used to create the skull model skull file.zip - Contains the uncorrected, raw STL file generated from Osirix. skull file corrected.zip - Contains the skull STL file after correcting mesh errors in Blender. skull file corrected preform.zip - Contains the .form file of the corrected STL. This is the file format used with the Formlabs Form1+ printer. If you have this type of printer, download this file and print yourself. All files are compressed with zip.

    Free

  15. Version 1.0.0

    93 downloads

    This STL file of a highly detailed dental scan shows the bony anatomy of the maxilla, mandible and facial structures in great detail. This model was created using the democratiz3D service. incisix, H, 150

    Free

  16. Mkwright26

    Practice

    Version 1.0.0

    1 download

    Practice file for ct->stl, Vastus medialis muscle, Vastus lateralis muscle, Femur, Lateral femoral condyle, Medial femoral condyle, Descending genicular vein (articular branches), Lateral tibial condyle, Medial tibial condyle, Peroneus (fibularis) longus muscle, Extensor digitorum longus muscle, Tibia, Tibialis anterior muscle, knee, pes anserinus (superficial), Semimembranosus muscle (tibial attachment deep pesanserinus), Extensor digitorum longus muscle, Popliteus muscle, patella, quadriceps, semitendinosus,

    Free

  17. Version 1.0.0

    3 downloads

    hand-bone-3files - stl file processed upper limb, stl, 3dmodel, skin, hand, .stl, muscle, skin, upper, limb, finger, phalanx, tendons, ligaments, flexor, extensor, hypothenar, index, middle, ring, pinky, thumb, 3d, model, printable,

    Free

  18. health_physics

    C1 vertebra from CT scan

    Version

    129 downloads

    This anatomically accurate C1 vertebra was extracted from a DICOM CT dataset (0.5 mm slice thickness x 47 slices). The model may be useful for medical education and shows shows the vertebral body, spinous process, facets, transverse processes and spinal canal. The file is in STL format and compressed with ZIP. Printed on a Makerbot Replicator 1. Thank you to Dr Mike for the excellent renders. Find us at www.healthphysics.com.au

    Free

  19. MITCHELLTB

    DannyHead - stl file processed

    Version 1.0.0

    2 downloads

    DannyHead - stl file processed This file was created with democratiz3D. Automatically create 3D printable models from CT scans. Learn more. 3D, model, .stl, bone, printable, bone, nasal, septum, zygomatic, arch, maxilla, apophysis, mastoid, temporal, frontal, orbit, mandible, head, skull occipital, parietal, clinoid, pterygoid, maxillofacial,

    Free

  20. Marcos.ferronato

    Lidia .stl

    Version 1.0.0

    1 download

    Tomografia , .stl, maxilla, ct, scan, without contrast, 3d, model, printable, maxillary, sinus, paranasal sinuses, hard, palate, bone,

    Free

  21. Version 1.0.0

    2 downloads

    convert to STL file for ortho, .stl, 3d, model, .stl, printable, bone, hard, palate, nasal, septum, lower, turbinate, maxillary, sinus, sphenoid, pharynx, nasopharynx, teeth, incisor, molar, premolar, canine, mandible,

    Free

  22. Version 1.0.0

    27 downloads

    Patient born with Pulmonary Stenosis, Double Outlet Right Ventricle, Transposition of the Great Arteries, Ventricular Septal Defect, and Atrial Septal Defect. Scanned 19.5 Years later. - stl file processed This file was created with democratiz3D. Automatically create 3D printable models from CT scans. Learn more. tetralogy of fallot, ventricle, auricle, pulmonary, stenosis, double outlet right ventricle, transposition of the great arteries, ventricular septal defect, atrial septal, defect, ct scan with contrast, mediastinum, lung, sternum, ribs, bronchi, trachea, cava, vein, inferior, superior, aorta, ascending, descending, mediastinum, thorax, 3d, model, .stl, printable,

    Free

  23. Version 1.0.0

    3 downloads

    This is a bone detailed print of a CT scan of the Nasopharynx region and nasal canal. ct, scan, without , contrast, orbit, eyeball, optic, nerve, frontal, bone, sinus, maxillary, sphenoid, nasal, septum, ethmoid, vomer, palatine, pterigoid, bones, hard, palate, atlas, axis, dens, joint, cervical, spine, nasopharynx, nasal canal, 3d, model, printable , .stl,

    Free

  24. AMRIE

    cat scan - stl file processed

    Version 1.0.0

    10 downloads

    cat scan - stl file processed, back, leg, pelvis, stl, 3dmodel, bone, vetrinary, tail, column, lumbar

    Free

  25. 747Larry@gmail.com

    LTD Lumbar 20181031 - stl file processed

    Version 1.0.0

    4 downloads

    LTD Lumbar 20181031 - stl file processed This file was created with democratiz3D. Automatically create 3D printable models from CT scans. Learn more. 3d, model, .lumbar spine, bone, Body of vertebra, Superior vertebral end plate, Inferior vertebral end plate, Intervertebral disk space, Facet joint, Superior articular process, Inferior articular process, Transverse process, Spinous process, Pedicle, Sacroiliac joint, Sacrum, Sacral foramina, ribs, osteodegenerative, changes, scoliosis, crest, iliac, .stl, printable

    Free

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