Estimation of two dimensional regional wall motion and two dimensional vector flow

二维区域壁运动和二维矢量流的估计

• 批准号: 05680759
• 负责人: SEKIOKA Kiyotsugu
• 金额: $ 0.9万
• 依托单位: Mie University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05680759/
• 关键词: two dimensional regional wall motion; 2D-correlation; high frame rate echocardiography; two dimensional vector flow; automatic tracking of 2-D wall motion; 超音波エコー; 心筋壁局所壁運動; 血流速ベクトル; 局所心筋壁運動

Conventional methods to evaluate regional wall motion need assumptios on the direction of wall motion such as motion toward the center of cavity, or the nearest points in the successive frame. However, actual wall motion includes cardiac rotation or more complicated motions and this actual motion may reflect cardiac conditions. Therefore we tried to track two dimensional wall motion without assumptions using high frame rate echocardiography (60 to 89 frame/sec) since defprmation of ventricular wall between two successive frames in high frame rate echo is expected to be small and this makes it easy to track images. We applied composite 2D correlation method, which uses appropriately weighted three indices, continuation of motion, cyclic change and large region of interest. The weight of each indices was determined by minimizing the accumulated squared errors from human tracing. We applied this method to another image and compared the result with simple correlation method, conventional methods with assumption on moving direction and conventional frame rate images. This composite method was the most accurate. This methods was applied to clinical diseases and detected wall motion revealed objectively disease specific wall motions. In the second research aim, we estimated two dimensional vector flow from conventional color Doppler image in ventricular cavity based on continuity equation. This result was examined with visualized 2D flow image by B-mode echo, injecting micro bubble and error derived from 3D flow was estimated computer simulation. This result is now in preparation for submission.

传统的评价局部室壁运动的方法需要对室壁运动的方向进行判断，如向腔中心或连续帧中最近点的运动。然而，实际壁运动包括心脏旋转或更复杂的运动，并且该实际运动可以反映心脏状况。因此，我们尝试使用高帧速率超声心动图（60至89帧/秒）在没有假设的情况下跟踪二维室壁运动，因为高帧速率回波中两个连续帧之间的心室壁变形预计很小，这使得跟踪图像变得容易。我们应用了复合2D相关方法，该方法使用适当加权的三个指标：运动的连续性、周期性变化和大感兴趣区域。每个指标的权重是通过最小化人类跟踪的累积平方误差来确定的。将该方法应用于另一幅图像，并与简单相关方法、传统的假设运动方向的方法和传统的帧率图像进行了比较。这种复合方法是最准确的。将该方法应用于临床，检测到的室壁运动客观地反映了疾病特异性室壁运动。第二个研究目标是从常规彩色多普勒图像中，基于连续性方程估计心室腔内的二维矢量流。用B超二维血流显像、微气泡注入及计算机模拟三维血流的误差进行了验证。目前正在准备提交这一结果。

项目成果

関岡清次: "Quantification of Two-Dimensional Regional Wall Motion in High Frame-Rate Echocardliograph" Japanese Circulation journal. Vol 58. 542- (1994)

Kiyoji Sekioka：“高帧率超声心动图中二维区域壁运动的量化”日本循环杂志第 58 卷。542-（1994 年）。

Automatic tracking of two dimensional regional wall motion in echocardiography: "Mikio Umehara, Shinnji Tsuruoka, Fumitaka Kimura, Yasuji Miyake, Kiyotsugu Sekioka" Jpn.J of electronic information D-II. vol.179. 286-294 (1996)

超声心动图中二维局部室壁运动的自动跟踪：“Mikio Umehara，Shinnji Tsuruoka，Fumitaka Kimura，Yasuji Miyake，Kiyotsugu Sekioka”电子信息D-II的Jpn.J。

Evaluation of Phasic Local Wall Motion by Serial Frame Subtracion: "Hiroaki MURAYAMA,Fumitaka KIMURA,Yasuji MIYAKE,Shinji TSURUOKA,Munenobu MOTOYASU,Kiyotsugu SEKIOKA,Takeshi NAKANO" Jpn J Medical Ultrasonics. 22. 395-398 (1995)

通过串行帧减法评估相位局部壁运动：“Hiroaki MURAYAMA、Fumitaka KIMURA、Yasuji MIYAKE、Shinji TSURUOKA、Munenobu MOTOYASU、Kiyotsugu SEKIOKA、Takeshi NAKANO”Jpn J Medical Ultrasonics。

Regional Wall Motion Tracking System for High-Frame Rate Ultrasound Echocardiography: "Shinji Tsuruoka, Mikiko Umehara, Fumitaka Kumura, Yasuji Miyake, Kiyotsugu Sekioka" Advanced Motion Control Proceedings 1996 sponsored by IEEE The Industrial Electronic

用于高帧率超声心动图的区域壁运动跟踪系统：“Shinji Tsuruoka、Mikiko Umehara、Fumitaka Kumura、Yasuji Miyake、Kiyotsugu Sekioka”1996 年由 IEEE 主办的高级运动控制论文集 The Industrial Electronic

梅原幹生 鶴岡信治 木村文隆 関岡清次: "心エコー画像における局所心筋壁2次元運動の追跡" 電子情報通信学会論文誌. J79. 286-294 (1996)

Mikio Umehara、Shinji Tsuruoka、Fumitaka Kimura、Kiyoji Sekioka：“超声心动图图像中局部心肌壁二维运动的跟踪”《电子、信息和通信工程师学会会刊》J79（1996）。