透過您的圖書館登入
IP:18.119.131.178
  • 期刊

Blood Flow Measurement and Visualization from MR Images

核磁共振影像之血流量測與顯示

摘要


本論文提出一個使用核磁共振影像之血液流動分析系統,為了量測血管的血液流動,我們先從核磁共振影像的大小影像中找出所感興趣的血管區域,偵測出血管輪廓,將輪廓重疊在相位對比影像,即可從相位對比影像中計算出血液流動參數。與史丹福大學在流速分析所提出的血管分割方法比較,本文所提出的血管分割方法較準確,尤其在心跳或呼吸所造成動態影像,本研究所提出的方法能得到較佳之血液流動量測。

並列摘要


A blood flow analysis system using MRI is presented. In order to measure the blood flow of a vessel, a vessel region of interest in the magnitude image is first located. Then contours of the vessel are detected and are superimposed on the phase contrast image from which a set of quantitative flow parameters can be calculated. Comparing to the traditional segmentation in blood flow analysis proposed by the research group in Stanford University [1], the proposed method is more accurate in vessel segmentation and performs better blood-flow measurement in motional images caused by heart beating and respiration.

延伸閱讀