{"id":6103,"date":"2022-02-04T14:50:45","date_gmt":"2022-02-04T12:50:45","guid":{"rendered":"https:\/\/rcbe.de\/?page_id=6103"},"modified":"2022-02-04T14:53:45","modified_gmt":"2022-02-04T12:53:45","slug":"micro-ct","status":"publish","type":"page","link":"https:\/\/rcbe.de\/en\/micro-ct\/","title":{"rendered":"Micro-CT"},"content":{"rendered":"
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\n\t\t\t\t\t\tMicro-Computertomograph\t\t\t\t\t\t<\/h2>\n\t\t\t\t\t\t<\/div>\n<\/div><\/div>
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      In<\/span> 2015<\/span>, the<\/span> Regensburg<\/span> Center<\/span> of<\/span> Biomedical<\/span> Engineering<\/span> (RCBE<\/span>) commissioned<\/span> the<\/span> micro-computer<\/span> tomograph<\/span> (Micro-CT<\/span>) at<\/span> the<\/span> Ostbayerische<\/span> Technische<\/span> Hochschule<\/span> Regensburg<\/span> (OTH<\/span> Regensburg<\/span>) funded<\/span> by<\/span> the<\/span> German<\/span> Research<\/span> Foundation<\/span> (DFG<\/span>). The<\/span> X-ray<\/span> testing<\/span> system<\/span> phoenix<\/span> v|tome|xs<\/span> 24<\/span>0\/18<\/span>0 from<\/span> Baker<\/span> Hughes<\/span> Digital<\/span> Solutions<\/span> GmbH<\/span> is<\/span> interdisciplinary<\/span> and<\/span> is<\/span> located<\/span> in<\/span> the<\/span> Faculty<\/span> of<\/span> Mechanical<\/span> Engineering<\/span> at<\/span> OTH<\/span> Regensburg<\/span>.<\/p>\n

      \"\"For<\/span> many<\/span> topics<\/span> from<\/span> a<\/span> wide<\/span> range<\/span> of<\/span> disciplines<\/span>, it<\/span> is<\/span> crucial<\/span> to<\/span> know<\/span> what<\/span> it<\/span> looks<\/span> like<\/span> \u201cinside\u201d<\/span> an<\/span> exhibit<\/span>. Typically<\/span>, methods<\/span> that<\/span> destroy<\/span> or<\/span> alter<\/span> the<\/span> exhibit<\/span> are<\/span> used<\/span> for<\/span> this<\/span> purpose<\/span>. Micro-CT<\/span>, on<\/span> the<\/span> other<\/span> hand<\/span>, which<\/span> works<\/span> with<\/span> X-rays<\/span>, can<\/span> reveal<\/span> the<\/span> hidden<\/span> interior<\/span> of<\/span> objects<\/span> of<\/span> examination<\/span> without<\/span> causing<\/span> damage<\/span> or<\/span> destruction<\/span>. No<\/span> special<\/span> preparation<\/span>, such<\/span> as<\/span> scanning<\/span> electron<\/span> microscopy<\/span>, is<\/span> required<\/span> either<\/span>. The<\/span> CT<\/span> also<\/span> includes<\/span> a<\/span> high-performance<\/span> graphics<\/span> card-accelerated<\/span> workstation<\/span> with<\/span> specialized<\/span> software<\/span> to<\/span> process<\/span> and<\/span> visualize<\/span> raw<\/span> data<\/span>, as<\/span> well<\/span> as<\/span> to<\/span> measure<\/span> a<\/span> large<\/span> number<\/span> of<\/span> parameters<\/span>.<\/p>\n

      The<\/span> device<\/span> is<\/span> available<\/span> to<\/span> Campus<\/span> Regensburg<\/span> for<\/span> research<\/span> tasks<\/span> and<\/span> is<\/span> integrated<\/span> into<\/span> research<\/span> projects<\/span> and<\/span> development<\/span> contracts<\/span>.<\/p>\n

      The<\/span> device<\/span> is<\/span> also<\/span> available<\/span> for<\/span> contract<\/span> research<\/span>.<\/p>\n<\/div>\n

       <\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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      \n\t\t\t\t\t\tTechnical Data \t\t\t\t\t\t<\/h2>\n\t\t\t\t\t\t\t\t\t\t\t
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      \n\t\t\t\t\t\t\t\t\t\t\t\t\t\tX-ray tube\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t
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      \"\"The<\/span> direct<\/span> x-ray<\/span> tube<\/span> (=<\/span> D-tube<\/span>) has<\/span> a<\/span> maximum<\/span> voltage<\/span> of<\/span> 24<\/span>0 kV<\/span> and<\/span> the<\/span> transmission<\/span> X-ray<\/span> tube<\/span> (=<\/span> NF-tube<\/span>) has<\/span> a<\/span> maximum<\/span> voltage<\/span> of<\/span> 18<\/span>0 kV<\/span>.<\/p>\n

      In<\/span> total<\/span>, the<\/span> following<\/span> performance<\/span> values<\/span> of<\/span> the<\/span> X-ray<\/span> tubes<\/span> are<\/span> obtained<\/span>:<\/p>\n\n\n\n\n\n\n
       <\/td>\nD-tube<\/strong><\/td>\nNF-tube<\/strong><\/td>\n<\/tr>\n
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      high voltage [kV]<\/div>\n<\/td>\n
      		10 – 240<\/td>\n10 – 180<\/td>\n<\/tr>\n
      X-ray tube current [\u00b5A]<\/td>\n5 – 3000<\/td>\n5 – 880<\/td>\n<\/tr>\n
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      Thickness<\/span> of<\/span> the<\/span> target<\/span><\/div>\n

      (radiation emersion window) [mm]\n<\/td>\n

      		0,5<\/td>\n0,4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t
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      \n\t\t\t\t\t\t\t\t\t\t\t\t\t\tSoftware\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t
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        Recording<\/span> software<\/span>: phoenix datos|x 2 acquisition 2.5.1<\/div>\n<\/li>\n
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        Reconstruction<\/span> software<\/span>: phoenix datos|x 2 reconstruction 2.5.1<\/div>\n<\/li>\n
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        Evaluation<\/span> software<\/span>: Volume Graphics VG Studio Max 2.2.3<\/div>\n<\/li>\n<\/ul>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t
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        • Number<\/span> of<\/span> axles<\/span>: max<\/span>. 5<\/span><\/li>\n
        • Weight<\/span> of<\/span> test<\/span> specimen<\/span>: max<\/span>. 10<\/span> kg<\/span><\/li>\n
        • Measurements<\/span> of<\/span> test<\/span> specimen<\/span> (max<\/span>. ):<\/span> 26<\/span>0 mm<\/span> diameter<\/span>, 40<\/span>0 mm<\/span> height<\/span><\/li>\n
        • Rotation<\/span>: 36<\/span>0 \u00b0<\/span><\/li>\n
        • Axle<\/span> speed<\/span>: min<\/span>. 10<\/span> \u03bcm<\/span>\/s<\/span><\/li>\n
        • Axle<\/span> speed<\/span>: max<\/span>. 80<\/span> mm<\/span>\/s<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div><\/div><\/div><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/div>\n<\/div>\n<\/div><\/div><\/div><\/div>
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          \n\t\t\t\t\t\t3D Computerized Tomography (3D CT)\t\t\t\t\t\t<\/h2>\n\t\t\t\t\t\t\t\t\t\t\t
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          <\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n<\/div><\/div>
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          The<\/span> material<\/span> to<\/span> be<\/span> examined<\/span> (=<\/span> test<\/span> specimen<\/span>) is<\/span> penetrated<\/span> by<\/span> the<\/span> X-ray<\/span> radiation<\/span> generated<\/span> in<\/span> the<\/span> X-ray<\/span> tube<\/span>, which<\/span> is<\/span> attenuated<\/span> to<\/span> different<\/span> degrees<\/span> depending<\/span> on<\/span> the<\/span> material<\/span> and<\/span> measured<\/span> by<\/span> a<\/span> detector<\/span>. This<\/span> allows<\/span> non-destructive<\/span> images<\/span> of<\/span> complex<\/span> external<\/span> and<\/span> internal<\/span> structures<\/span> of<\/span> the<\/span> test<\/span> object<\/span> to<\/span> be<\/span> generated<\/span>.<\/p>\n

          Several<\/span> X-rays<\/span> of<\/span> the<\/span> specimen<\/span> from<\/span> different<\/span> directions<\/span> are<\/span> taken<\/span> to<\/span> represent<\/span> a<\/span> three-dimensional<\/span> image<\/span>. The<\/span> object<\/span> to<\/span> be<\/span> measured<\/span> rotates<\/span> 360\u00b0<\/span> around<\/span> its<\/span> own<\/span> axis<\/span> between<\/span> the<\/span> X-ray<\/span> tube<\/span> and<\/span> the<\/span> detector<\/span> on<\/span> a<\/span> rotary<\/span> controller<\/span>. A<\/span> 3D<\/span> volume<\/span> model<\/span> is<\/span> calculated<\/span> from<\/span> the<\/span> images<\/span>.<\/p>\n

          The<\/span> micro-computer<\/span> tomograph<\/span> v|tome|xs<\/span> 24<\/span>0\/18<\/span>0 has<\/span> two<\/span> different<\/span> X-ray<\/span> tubes<\/span> for<\/span> a<\/span> wide<\/span> range<\/span> of<\/span> applications<\/span>. The<\/span> NF<\/span> tube<\/span> is<\/span> suitable<\/span> for<\/span> mainly<\/span> weakly<\/span> absorbing<\/span> very<\/span> small<\/span> objects<\/span>, which<\/span> require<\/span> a<\/span> high<\/span> degree<\/span> of<\/span> detail<\/span> recognition<\/span>. The<\/span> more<\/span> powerful<\/span> D-tube<\/span> is<\/span> used<\/span> for<\/span> low<\/span> to<\/span> high<\/span> absorbing<\/span> materials<\/span>.<\/p>\n<\/div>\n<\/div><\/div><\/div><\/div>

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          <\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n<\/div><\/div>
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          • High<\/span> resolution<\/span> display<\/span> of<\/span> 3D<\/span> volumes<\/span><\/li>\n
          • Non-destructive<\/span> material<\/span> testing<\/span> for<\/span> cracks<\/span>, inclusions<\/span>, etc<\/span>.<\/li>\n
          • Analysis<\/span> methods<\/span> such<\/span> as<\/span> defect<\/span> analysis<\/span>, pore<\/span> and<\/span> inclusion<\/span> analysis<\/span>, fiber<\/span> orientation<\/span> analysis<\/span>, etc<\/span>.<\/li>\n
          • Measurements<\/span> of<\/span> geometries<\/span> (surfaces<\/span>, volumes<\/span>, morphometry<\/span> such<\/span> as<\/span> bone<\/span> surface<\/span>\/bone<\/span> volume<\/span>, average<\/span> trabecular<\/span> thickness<\/span>, etc<\/span>. )<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div><\/div><\/div><\/div>
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            <\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n<\/div><\/div>
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