ＲＩ心血管造影像からの左心室輪郭抽出と容積計算の自動化

DOI Web Site PubMed

書誌事項

タイトル別名
  • Left Ventricular Contour Extraction and Volume Computation from RI-angiocardiographic Images
  • RI シン ケッカン ゾウエイゾウ カラ ノ サシンシツ リンカク チュウシュ

この論文をさがす

抄録

An automated processing technique to extract the LV contour from RI-angiocardiogram and to, compute the LV volume is proposed. An original fuzzy image is first transformed into well defined image by the nonlinear enhancement technique and LV contour is then determined by employing both thresholding and differentiation on this enhanced image. By thresholding at the density level determined from the enhanced image's histogram, a two-value figure indicating a composite region of left ventricle and left atrium is obtained, and the anterior-inferior part of the LV contour is obtained from this figure. Then, the boundary separating the left ventricle and left atrium, which becomes the posterior part of the LV contour, is detected by horizontal spatial differentiation. These two parts of the contour extracted separately are combined into the complete LV contour. The apex and the aortic valve line are located on the LV contour by using the curvature information of the LV contour, and LV volume is computed by the Simpson's integral method.

収録刊行物

詳細情報 詳細情報について

問題の指摘

ページトップへ