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題 名 | 左心室運動功能及形態分析系統=Left Ventricular Motion and Shape Analysis System |
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作 者 | 胡威志; 劉嵩峰; 吳銘庭; 劉俊鵬; 徐良育; | 書刊名 | Journal of Medical and Biological Engineering |
卷 期 | 21:1 2001.03[民90.03] |
頁 次 | 頁31-42 |
分類號 | 410.1644 |
關鍵詞 | 左心室型態及功能; 左心室型態長軸; 心室壁運動; 磁共振心臟影像; LV shape and functional analysis; LV long axis; Wall motion; MRI cardiac images; |
語 文 | 中文(Chinese) |
中文摘要 | 本文論述一套心臟型態運動長軸建立及利用心臟型態功能之參數探討長軸與心室壁運動關係之方法,期望日後能發展出一套簡單易懂之模擬心臟運動模型,並發展一套系統工具,建立擷取多時相、多切面之三維動態影像之左心室長軸及相關型態參數之流程,整合長軸與型態參數之資料型式,方便使用者進行左心室長軸及其他型態功能參數之分析,以進行心臟運動之描述與心臟功能之評估。系統分析之左心室功能型態參數包括:左心室心肌之體積並可用以計算心肌質量(LV Mass)、心輸出量、心博量、心博射出分率、不同時間容積的變化,左心室厚度與腔室等效半徑之比,左心室及腔室之似圓率及似方程率。系統之功能包括磁共振影像之讀取與處理,半自動圈選輪廓,三維重建,心室機能參數之分析。另外系統也提供的相關功能,如多切面二維動態影像播放、三維心內外膜及長軸動態影像播放及長軸軌跡分析結果呈現等。由擷取之資料可觀察出,長軸可靈敏的反應出心室壁收縮的均勻程度。長軸彎曲偏移反應心臟壁收縮不均勻之位置,長軸的偏移通常反應這心臟之運動不協調或其收縮時扭曲發生型變,長軸上端隨著血液之流動方向而擺動。因此利用長軸及型態參數確實可以快速簡單之敘述心室壁運動。 |
英文摘要 | Using reconstructed non-invasive dynamic cardiac image to evaluate global cardiac performance will be significant both to the patients and to the doctors. The article describes methods and processes of finding left ventricular (LV) floating long axis, LV morphological long axis that extracting LV morphological and functional parameters. These parameters can be used in studying the functionality of left ventricle, the status of abnormality of myocardial, the geometric and morphological of Left ventricle in shape analysis. These data can also be used in modeling the LV function and the myocardial motion. The synergetic evaluation of the extracted data from the discussed system can significantly improve the understanding (in clinical) of LV function non-invasively. The data demonstrated are extracted using the multiple slices and multiple phase cardiac MRI images. The LV functional parameters are the stroke volume (cardiac output, CO), eject fraction (EF) and many others. The LV morphological parameters are wall motion analysis, LV chamber cavity variation, effective R-ratio of myocardium and chamber, area surface curvature, global surface curvature circularity calculation. The developed system including functions of (1) display the cardiac images (MRI images) with movie; (2) semi-automatic border tracing; (3) 3-d reconstruction of LV; (4) morphological and functional parameter analysis. And, the system also provides display functions of (1) multi-slice of 2-d MRI image; (2) 3-d wire frame of LV and long axis with movie; (3) the long axis motion traces, etc. From the preliminary data analysis, the result indicates that the LV long axis is sensitive to the myocardial dysfunction and can be used to evaluate the status LV in the contraction phase. |
本系統中英文摘要資訊取自各篇刊載內容。