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kopachini last won the day on August 9

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About kopachini

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  1. Some of you could see it on my Instagram account, but for those who didn't, here are some of the tips if you want a really transparent and water tight models: use Polymaker PolySmooth transparent or Prusament PVB filament. According to Prusa you should set layer height to 0.3mm, but I print with 0.2 mm layer height with very satisfying results. Wall thickness 0.6 (you could make 0.8mm but as thicker it gets, model is less transparent so I didn't go at 0.8mm, maybe once I will try). After the print scrape away some irregularities and after that you can put it in chamber for vapor smoothing with isopropyl alcohol. If you don't own one (as me) just spray the model (inside and outside) with IPA for smoothing results. Don't be aggressive as too much alcohol on the model softens and dissolves PVB so it is better to spray a little bit than after drying, spray it again. Bellow is the example of my aorta model and you can see catheter and guidewire really well.
  2. Hi @yatay, I did long time ago... but not since because no one didn't ask for it. To be short, as for now, using 3D Slicer you can make stl model from GE and Philips ultrasound DICOM data
  3. Hi David, don't use this shading reconstruction for segmentation. You have to scan desired volume (baby face) and then that volume you have save as uncompresed DICOM data if I recall (you will have several choices from drop down menu, and you can try to save as raw dicom data, compresed dicom data, too... and give it a try and open it in 3D Slicer).. Hope this helps a little bit, I didn't do that for 3 years now and I have forgot all the exact steps how to properly save data in GE US for segmentation.
  4. you have to have 3d volume datasets to make models out of rotational angio... try to copy several different types of files from one study and open them in 3d slicer and you will know what files to take for model making. i had similar problem but had multiple files of same study and open them one by one and i know what types i have to have for rotational angio.
  5. Version 1.0.0


    Blood pool model of persistent left superior vena cava that confluence with coronary sinus. Also present Tetralogy of Fallot. Neonatal heart. ventricular, septal, defect, congenital, heart, disease, superior, vena, cava, vessels, .stl, 3d, model, printable, ventricle, heart, auricle, coronary, sinus, pulmonary, trunk, great, vessels,


  6. At my department we have Intellispace Portal 7 and I am quite pleased with it, depending what you want to do with it. The major thing is that there is possibility to export .stl file from volume rendered recons (short VRT) from version 6 or 7 and above, which is not possible from Siemens Syngo. Also we have Philips Azurion C-arm and when you perform rotational intrarterial angiography it is possible to make VRT 3D model and also export it into Intellispace Portal (I did that only once when Philips aplicator was at my department but will have to do it more when I am back after my final exam). Also, I tried version Intellispace 9 or 10 (not sure which one) at RSNA meeting and it looks pretty nice, too. The thing is that all software in workstations have the same algorithms for automated segmentation and generation VRT models that are based on different threshold values for different tissue density and as said before, the best visualized tissues are those that have significant contrast to other tissue (like bone or contrast blood to surrounding soft tissue). Organs like liver, kidneys etc. are composed of different density tissues that have different density voxels on CT scan that can range from higher HU values in one voxel (blood vessel in post contrast scan of liver) to lower HU values (let say small area of lipids accumulated in hepatocytes), and if that area is near liver capsule where adjacent tissue is fat, you will have artefacts in your automated segmentation of liver. That is why I love manual or semi-automated segmentation for now until AI makes automated segementation more accurate (there was post about application of AI and segmentation in 3D slicer in some other topic).
  7. That's a great news... I hope that there will be a windows version, too, so others who don't use Linux could also try it
  8. Version 1.0.0


    This is an ready-to-print .stl file of neonatal skull with a rare congenital anomaly of one sided maxillary and mandibular fusion and mandibular cleft (which is little bit reduced for more easier print). Also, connections between cranial bones were added. Could be printed on FDM (slightly harder to remove supports) and SLA/DLP 3D printer. head, skull, .stl, 3d, model, printable, frontal, parietal, congenital, syngnathia, orbit, nasal, spine, hard, palate, mandible, maxilla, zygomatic, arch, angle, ramus, coronoid, process, bone, metopic, suture, coronal, fontanelle, anterior, posterior,


  9. Unfortunately, I won't attend RSNA meeting this year
  10. Version 1.0.0

    1 download

    Palatine bone of a young female. Segmented according to Sobotta Anatomy atlas. Model is printable on FDM printer and others.


  11. This was eye openning for me, now is so much easier for me to remove suppots... but after this post I will probably have same problems as you (we from Balkans are very superstitious as yo know at least I am)
  12. And where did your colleagues buy PEEK and for what price if you know? The problem is that medical grade PEEK is still a bit pricey, but not as much as titanium, right? I saw one company on the internet from the states called Vision Miner which print PEEK and contact them for more info about complications etc. ... they have been printing some implants for hospital in Columbia and all that they could tell me that there were no complications but gave me contact of that hospital so I can ask those surgeons more details , but as today I still didn't.
  13. In Slicer PE, now Prusa Slicer, under Support materials, there is a parameter called Contact Z distance, you can increase it to 0.2 (detachable) which makes removing supports more easily
  14. 3D modeling and printing from US data is pretty much the same as from CT... using treshold technique and generating mesh. The biggest problem, for now, is how to open DICOM data obtained from US because it differs to one obtained from CT in one of the software for sliceing (3D Slicer). For now, in 3D slicer you can open DICOM data from GE machines and Philips but people are working on enabling importing DICOM data from other manufacturers. Hope this helps a little bit
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