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Found 67 results

  1. Version 1.0.0

    1 download

    just to trial.

    Free

  2. Version 1.0.0

    2 downloads

    Tuis is a 3D printable medical model

    Free

  3. NRRD is a file format for storing and visualizing medical image data. Its main benefit over DICOM, the standard file format for medical imaging, is that NRRD files are anonymized and contain no sensitive patient information. Furthermore NRRD files can store a medical scan in a single file, whereas DICOM data sets are usually comprised of a directory or directories that contain dozens if not hundreds of individual files. NRRD is thus a good file for transferring medical scan data while protecting patient privacy. This tutorial will teach you how to create an NRRD file from a DICOM data set generated from a medical scan, such as a CT, MRI, ultrasound, or x-rays. To complete this tutorial you will need a CD or DVD with your medical imaging scan, or a downloaded DICOM data set from one of many online repositories. If you had a medical scan at a hospital or clinic you can usually obtain a CD or DVD from the radiology department after signing a waiver and paying a small copying fee. Step 1: Download Slicer Slicer is a free software program for medical imaging. It can be downloaded from the www.slicer.org. Once on the Slicer homepage, click on the Download link as shown in Figure 1. Figure 1 Slicer is available for Windows, Mac, and Linux. Choose your operating system and download the latest stable release as shown in Figure 2. Figure 2: Download Slicer Step 2: Copy the DICOM files into Slicer. Insert your CD or DVD containing your medical scan data into your CD or DVD drive, or open the folder containing your DICOM files if you have a downloaded data set. If you navigate into the folder directory, you will notice that there are usually multiple DICOM files in one or more directories, as shown in Figure 3. Navigate to the highest level folder containing all the DICOM files. Figure 3: There are many DICOM files in a study Open Slicer. The welcome screen will show, as demonstrated in Figure 4. Left click on the folder that contains the DICOM files and drop it onto the Welcome panel in Slicer. Slicer will ask you if you want to load the DICOM files into the DICOM database, as shown in Figure 5. Click OK Slicer will then ask you if you want to copy the files or merely add links. Click Copy as shown in Figure 6. Figure 4: Drag and drop the DICOM folder onto the Slicer Welcome window. Figures 5 and 6 After working for a minute or two, Slicer will tell you that the DICOM import was successful, as shown in Figure 7. Click OK Figure 7 Step 3: Open the Medical Scan in Slicer. At this point you should see a window called the DICOM Browser, as shown in Figure 8. The browser has three panels, which show the patient information, study information, and the individual series within each study. If you close the DICOM Browser and need to open it again, you can do so under the Modules menu, as shown in Figure 9. Figure 8: DICOM Browser Figure 9: Finding the DICOM browser Each series in a medical imaging scan is comprised of a stack of images that together make a volume. This volume can be used to make the NRRD file. Modern CT and MRI scans typically have multiple series and different orientations that were collected using different techniques. These multiple views of the same structures allow the doctors reading the scan to have the best chance of making the correct diagnosis. A detailed explanation of the different types of CT and MRI series is beyond the scope of this article, but will be covered in a future tutorial. Click on the single patient, study, and a series of interest. Click the Load button as shown in Figure 8. The series will then begin to load as shown in Figure 10. Figure 10: The study is loading Step 4: Save the Imaging Data in NRRD Format Once the series loads you will see the imaging data displayed in the Slicer windows. Click the Save button on the upper left-hand corner, as shown in Figure 11. Figure 11: Click the Save button The Save Scene dialog box will then appear. Two or more rows may be shown. Put a checkmark next to the row that has a name that ends in ".nrrd". Uncheck all other rows. Click the directory button for the nrrd file and specify the directory to save the file into. Then click the save button, as shown in Figure 12. Figure 12: Check the NRRD file and specify save directory. The NRRD file will now be saved in the directory you specified!
  4. Version 1.0.0

    2 downloads

    Vertebral column This 3D model was created from the file STS_036 A 3D printable STL file model created from this scan can be found here.

    Free

  5. Version 1.0.0

    2 downloads

    Left ribs This 3D model was created from the file STS_036 A 3D printable STL file model created from this scan can be found here.

    Free

  6. Version 1.0.0

    0 downloads

    Right ribs This 3D model was created from the file STS_036. A 3D printable STL file model created from this scan can be found here.

    Free

  7. Version 1.0.0

    0 downloads

    L5 A 3D printable STL file model created from this scan can be found here.

    Free

  8. Version 1.0.0

    1 download

    L4 A 3D printable STL file model created from this scan can be found here.

    Free

  9. Version 1.0.0

    1 download

    The lumbar spine represents the mid-lower segment of the vertebral column and is composed of five adjacent vertebrae. They are convex anteriorly to form a lumbar lordosis. The lumbar spine facet joints allows limited movements and rotation. Each lumbar vertebra is formed of: A body: which is kidney shaped and is convex anteriorly while flattened posteriorly, pedicles and lamina, transverse processes, articular processes and a spinous process. This model shows the whole vertebral body with related articulations of the lower level vertebra. This 3D model was created from the file STS_036. A 3D printable STL file model created from this scan can be found here.

    Free

  10. Version 1.0.0

    0 downloads

    Second lumbar vertebra A 3D printable STL file model created from this scan can be found here.

    Free

  11. Version 1.0.0

    1 download

    L1 vertebral body This 3D model was created from the file STS_036. A 3D printable STL file model created from this scan can be found here.

    Free

  12. Version 1.0.0

    3 downloads

    Pelvic Bones 3D Printable STL File Converted From CT Scan This 3D model was created from the file STS_036. A 3D printable STL file model created from this scan can be found here.

    Free

  13. Version 1.0.0

    0 downloads

    Left Groin Leiomyosarcoma 3D Printable STL File Converted From CT Scan This 3D model was created from the file STS_036 A 3D printable STL file model created from this scan can be found here.

    Free

  14. Version 1.0.0

    3 downloads

    Left Knee Joint 3D Printable STL File Converted From CT Scan This 3D model was created from the file STS_045 A 3D printable STL file model created from this scan can be found here.

    Free

  15. Version 1.0.0

    6 downloads

    Mandible & Maxilla bones 3D Printable STL File Converted From CT Scan This 3D model was created from the file STS_044. A 3D printable STL file model created from this scan can be found here.

    Free

  16. Version 1.0.0

    1 download

    Dorsal (Thoracic) Spine 3D Printable STL File Converted From CT Scan This 3D model was created from the file STS_044. A 3D printable STL file model created from this scan can be found here.

    Free

  17. Version 1.0.0

    1 download

    This 3D model was created from the file STS_044. A 3D printable STL file model created from this scan can be found here.

    Free

  18. Version 1.0.0

    1 download

    This 3D model was created from the file STS_045

    Free

  19. Version 1.0.0

    0 downloads

    dental tutorial source file

    Free

  20. Version 1.0.0

    0 downloads

    dental tutorial model NRRD file

    Free

  21. Version 1.0.0

    3 downloads

    test stack .dicom file to .stl 3D printing file

    Free

  22. Version 1.0.0

    2 downloads

    Das ist ein 3D druckbares CT-Scan Model

    Free

  23. Version 1.0.0

    254 downloads

    Supporting files for the democratiz3D tutorial A Ridiculously Easily Way to Convert CT Scans to 3D Printable Bone STL Models for Free in Minutes which allows you to follow along with the tutorial. Included is an anonymized chest abdomen pelvis CT in both DICOM and NRRD formats.

    Free

  24. Version 1.0.0

    0 downloads

    This is a 3D printable medical model for the Instructables tutorial.

    Free

  25. 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!