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class="panel-2-hd">產(chǎn)品詳情</div> <div id="i8pjzty" class="panel-2-bd"> <div id="i8pjzty" class="news-detail"> <p><span style="color: rgb(255, 0, 0);"><strong><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">美國CIRS 062MQA CBCT電子密度和圖像質(zhì)量模體的設(shè)計意圖是提供一種工具，可用于電子密度校準(zhǔn)和集成在放射治療設(shè)備中的錐束CT系統(tǒng)的圖像質(zhì)量評估。</span></strong></span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";"><br/></span></p><p><span style="color: rgb(0, 112, 192);"><strong><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">美國CIRS 062MQA CBCT電子密度和圖像質(zhì)量模體簡介：</span></strong></span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">美國CIRS 062MQA CBCT電子密度和圖像質(zhì)量模體的設(shè)計意圖是提供一種工具，可用于電子密度校準(zhǔn)和集成在放射治療設(shè)備中的錐束CT系統(tǒng)的圖像質(zhì)量評估。體模的電子校準(zhǔn)功能增強(qiáng)了自適應(yīng)放射治療的結(jié)果，而圖像質(zhì)量特征解決了在很小化輻射劑量的同時優(yōu)化圖像質(zhì)量之間的精細(xì)平衡。</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">美國CIRS 062MQA CBCT電子密度和圖像質(zhì)量模體由幾個部分組成：100mm厚的車身板，100mm厚的CBCT圖像質(zhì)量模型，50mm厚的電子密度模型，以及由37.5mm厚的均勻板組成的團(tuán)塊，12.5 mm厚均勻板坯和50mm厚均勻板坯。</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">100毫米厚的主體部分有一個*心孔，可以接收CBCT圖像質(zhì)量模型。每個Bolus板都經(jīng)過鉆孔以容納離子室插件，無論圖像質(zhì)量插件的位置如何，都可以進(jìn)行離子室測量。選擇部分的厚度以允許將包含圖像質(zhì)量特征的任何層定位在光束的*心軸上。另外，不同厚度的部分減小了電子密度部分可以偏離*心軸的增量。</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">幻象支撐以及激光對準(zhǔn)標(biāo)記允許將模型容易且快速地定位在加速器沙發(fā)上。在機(jī)加工凹槽的幫助下，將模型放置在支撐導(dǎo)軌上。提供緩沖板以減少來自支撐裝置的偽影并允許用戶接近支撐板上的手柄。通過調(diào)節(jié)水平支腳來完成支撐的平整和隱含的體模。</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";"><br/></span></p><p><span style="color: rgb(0, 112, 192);"><strong><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">美國CIRS 062MQA CBCT電子密度和圖像質(zhì)量模體特點：</span></strong></span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">對AAPM TG報告#1執(zhí)行*有CT Image QA測試</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">使用電離室進(jìn)行劑量測量</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">使用離子室進(jìn)行劑量測量</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">在多層CT和錐束CT中校準(zhǔn)電子密度</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">執(zhí)行*心軸和偏移測量</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">將模擬組織材料定位在17個不同位置的CT和CBCT能量范圍內(nèi)</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">針對體積成像進(jìn)行了優(yōu)化</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">快速定位和定制加載配置</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";"></span></p><p style="text-align: center"><img src="/Public/Uploads/image/20180822/1534929486772149.png" style="" title="1534929486772149.png"/></p><p style="text-align: center"><img src="/Public/Uploads/image/20180822/1534929490372425.png" style="" title="1534929490372425.png"/></p><p style="text-align: center"><img src="/Public/Uploads/image/20180822/1534929493485435.png" style="" title="1534929493485435.png"/></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";"><br/></span><br/></p><p><strong><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">電子密度校準(zhǔn)和圖像質(zhì)量評估的一個解決方案：</span></strong></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">CBCT圖像質(zhì)量幻影</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">Phantom由四層組成：空間分辨率，CT數(shù)線性/切片厚度，低對比度和均勻度。CBCT圖像質(zhì)量體模的不同層在*心軸上的定位可以通過100mm主體部分中的體?；蛘邔Ⅲw模直接放置在支撐裝置上來完成。</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">空間分辨率層</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">空間分辨率層旨在評估IGRT系統(tǒng)的空間分辨率。1 lp / cm至16 lp / cm的線對圖案嵌入背景中。為了很小化偽影，每個線對圖案由350HU大于背景衰減的材料制成。線對圖案是沿著CBCT圖像質(zhì)量體模的縱軸12mm高的3D圖案?？臻g分辨率目標(biāo)以圓形圖案排列。</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">CT數(shù)線性和切片厚度層</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">CT數(shù)線性和切片厚度層用于確定對比度噪聲比，Hounsfield數(shù)精度和切片厚度靈敏度。由空氣，低密度聚乙烯(LDPE)，聚苯乙烯，丙烯酸，Delrin和Teflon制成的六根棒用于測量CnR和Hounsfield數(shù)精度。以等邊三角形排列的三個成角度的空氣通道可用于評估切片厚度靈敏度。</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">低對比度層</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">低對比度層旨在評估系統(tǒng)檢測對比度微小差異的能力。它包含三組低對比度棒，相對于背景材料，線性衰減差異為0.5%，1%和2%。選擇低對比度桿的直徑以通過橫截面和體積在兩個相鄰桿之間提供0.5比率。附加特征被設(shè)計用于評估橫向圖像的正交軸上的放大率，并作為用于計算點擴(kuò)散函數(shù)和隨后的調(diào)制傳遞函數(shù)的計算的輸入。</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">均勻?qū)?/span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">均勻度層旨在測量系統(tǒng)在物體視場上產(chǎn)生均勻圖像的能力，在*有方向上具有高度均勻的物理特性。</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">電子密度體模</span></p><p><span style="font-size: 14px; font-family: 微軟雅黑, "Microsoft YaHei";">模體由PlasticWater?制成的嵌套圓盤組成。嵌套磁盤允許模擬頭部和腹部幻像配置。八個不同的組織等效插入物可以定位在掃描場內(nèi)的17個不同位置。模體的幾何形狀還使用戶能夠從*心軸獲取測量偏移。</span></p><p><br/></p> <br /> </div> </div> </div> </div> </div> </div> <div id="i8pjzty" class="footer"> <div id="i8pjzty" class="footer_cent"> <div id="i8pjzty" class="container"> <div id="i8pjzty" class="zhjnr_twnr"> <div id="i8pjzty" class="twnr_xtb"> <ul> <li><img src="/Public/IMG/w/xtb2.jpg" /></li> <li><img src="/Public/IMG/w/xtb3.jpg" /></li> <li><img src="/Public/IMG/w/xtb4.jpg" /></li> </ul> </div> <div id="i8pjzty" class="twnr_wzi"> <p><span>北京華儀通泰環(huán)?？萍加邢薰?- 專業(yè)進(jìn)口儀器供應(yīng)商！，提供VOC檢測儀,測氡儀,表面沾污儀,活度計,煙氣分析儀,臭氧檢測儀等檢測儀器的銷售及服務(wù)</span></span></p> <p><span>網(wǎng)站備案號：<a target="_blank" 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