發(fā)布時間：2018-08-29 08:30

【摘要】：目的探討基于MRI圖像,通過算法計(jì)算測量羊水量的可行性。方法利用MatLab圖像處理技術(shù),對胎兒磁共振圖像進(jìn)行分割,提取目標(biāo)區(qū)域并計(jì)算目標(biāo)區(qū)域的面積,乘以層厚得出一層的體積,再將每層體積相加計(jì)算得到羊水總體積。結(jié)果通過該算法最終計(jì)算得出羊水的體積為495.10ml。定性分析顯示,圖像羊水分割邊緣與原圖目標(biāo)區(qū)域的邊緣擬合較好。定量分析顯示,手動金標(biāo)準(zhǔn)分割的體積為458.20ml,本研究算法與手動分割結(jié)果的誤差率為8.06%。脂肪抑制序列圖像分割效果定性評價(jià)亦顯示羊水分割邊緣與原圖目標(biāo)區(qū)域的邊緣擬合較好;定量分析顯示,金標(biāo)準(zhǔn)手動計(jì)算得到的羊水量為557.34ml,本研究算法計(jì)算得到的羊水量為604.50ml,與手動分割的誤差率為8.46%。結(jié)論采用本研究算法測量羊水量切實(shí)可行。
[Abstract]:Objective to investigate the feasibility of amniotic fluid measurement based on MRI images. Methods Fetal magnetic resonance images were segmented using MatLab image processing technique. The area of the target area was extracted and the area of the target area was calculated. The volume of one layer was obtained by multiplying the thickness of the layer, and the total volume of amniotic fluid was calculated by adding the volume of each layer. Results the volume of amniotic fluid was 495.10 ml. Qualitative analysis shows that the edge of the image amniotic fluid segmentation fits well with the edge of the target area of the original image. The quantitative analysis shows that the volume of manual gold standard segmentation is 458.20ml, and the error rate between this algorithm and manual segmentation results is 8.06. The qualitative evaluation of the effect of fat suppression sequence image segmentation also showed that the edge of amniotic fluid segmentation fitted well with the edge of the target region of the original image, and the quantitative analysis showed that, The amount of amniotic fluid obtained by gold standard manual calculation is 557.34 ml, the amniotic fluid quantity calculated by this algorithm is 604.50 ml, and the error rate of manual segmentation is 8.46 ml. Conclusion the method is feasible to measure amniotic fluid.
【作者單位】： 上海理工大學(xué)醫(yī)學(xué)影像工程研究所;上海醫(yī)療器械高等�？茖W(xué)校影像系;上海兒童醫(yī)學(xué)中心放射科;
【分類號】：R714.5;R445.2

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本文編號：2210750