中华超声影像学杂志
中華超聲影像學雜誌
중화초성영상학잡지
CHINESE JOURNAL OF ULTRASONOGRAPHY
2001年
5期
301-303
,共3页
吴瑛%Timothy Irvine%Yoshiki Mori%李小奎%David J Sahn
吳瑛%Timothy Irvine%Yoshiki Mori%李小奎%David J Sahn
오영%Timothy Irvine%Yoshiki Mori%리소규%David J Sahn
组织多普勒成像%左室壁节段性运动速度%模型,解剖学
組織多普勒成像%左室壁節段性運動速度%模型,解剖學
조직다보륵성상%좌실벽절단성운동속도%모형,해부학
目的应用自制的左室模型研究组织多普勒成像（TDI）测定左室壁节段性运动速度的可靠性和准确性。方法自制一个左室模型来验证TDI的准确性。该模型以双层气球制作，连接一脉冲流量泵，分设8种泵出量（50～85 ml/每搏）。将模型浸入水槽后，以摄像机与TDI同时记录球壁的运动位移和速度。采用GE系统5超声诊断仪，探头频率5 MHz。结果 M型与二维图像显示气球模型形状和壁运动与左心室十分相似。由TDI测得的球壁运动距离与摄像机同步测量距离相关密切［前壁：r=0.97,s()/(x)=0.24 mm,平均差±s=（0.04±0.24）mm;后壁r=0.95,s()/(x)=0.22 mm,平均差±s=（0.03±0.24）mm］。球壁特定测量点的TDI运动速度亦与摄像所得结果相关密切［前壁:r=0.97,s()/(x)=0.30 mm,平均差±s=-（0.04+0.28）mm;后壁:r=0.97,s()/(x)=0.30 mm,平均差±s=（0.04+0.28）mm］。结论球体模型提供了一种检测TDI准确性的新方法，证明所用TDI系统在测量壁运动距离和速度方面是准确可靠的。
目的應用自製的左室模型研究組織多普勒成像（TDI）測定左室壁節段性運動速度的可靠性和準確性。方法自製一箇左室模型來驗證TDI的準確性。該模型以雙層氣毬製作，連接一脈遲流量泵，分設8種泵齣量（50～85 ml/每搏）。將模型浸入水槽後，以攝像機與TDI同時記錄毬壁的運動位移和速度。採用GE繫統5超聲診斷儀，探頭頻率5 MHz。結果 M型與二維圖像顯示氣毬模型形狀和壁運動與左心室十分相似。由TDI測得的毬壁運動距離與攝像機同步測量距離相關密切［前壁：r=0.97,s()/(x)=0.24 mm,平均差±s=（0.04±0.24）mm;後壁r=0.95,s()/(x)=0.22 mm,平均差±s=（0.03±0.24）mm］。毬壁特定測量點的TDI運動速度亦與攝像所得結果相關密切［前壁:r=0.97,s()/(x)=0.30 mm,平均差±s=-（0.04+0.28）mm;後壁:r=0.97,s()/(x)=0.30 mm,平均差±s=（0.04+0.28）mm］。結論毬體模型提供瞭一種檢測TDI準確性的新方法，證明所用TDI繫統在測量壁運動距離和速度方麵是準確可靠的。
목적응용자제적좌실모형연구조직다보륵성상（TDI）측정좌실벽절단성운동속도적가고성화준학성。방법자제일개좌실모형래험증TDI적준학성。해모형이쌍층기구제작，련접일맥충류량빙，분설8충빙출량（50～85 ml/매박）。장모형침입수조후，이섭상궤여TDI동시기록구벽적운동위이화속도。채용GE계통5초성진단의，탐두빈솔5 MHz。결과 M형여이유도상현시기구모형형상화벽운동여좌심실십분상사。유TDI측득적구벽운동거리여섭상궤동보측량거리상관밀절［전벽：r=0.97,s()/(x)=0.24 mm,평균차±s=（0.04±0.24）mm;후벽r=0.95,s()/(x)=0.22 mm,평균차±s=（0.03±0.24）mm］。구벽특정측량점적TDI운동속도역여섭상소득결과상관밀절［전벽:r=0.97,s()/(x)=0.30 mm,평균차±s=-（0.04+0.28）mm;후벽:r=0.97,s()/(x)=0.30 mm,평균차±s=（0.04+0.28）mm］。결론구체모형제공료일충검측TDI준학성적신방법，증명소용TDI계통재측량벽운동거리화속도방면시준학가고적。
Objective To investigate the validity and accuracy of tissue Doppler imaging (TDI) using a novel balloon phantom.Methods A new TDI validation method was used with a specially developed left ventricular balloon model mounted in a water bath and constructed using two pear shaped balloons. It was connected to a pulsatile flow pump at 8 stroke volumes (50～85 ml / beat ). The displacement and velocity of the balloon walls were recorded simultaneously by video imaging and TDI on a GE-Vingmed System 5 with a 5 MHz phased array probe at the highest frame rates available.Results Conventional M-mode and 2D imaging verified that the balloon model was similar to left ventricle in its shape and wall motion. There was good correlation and agreement between the maximum video excursion of the anterior and posterior walls of the phantom and results of the temporal integration of digital distance data by TDI ［Anterior wall:r=0.97,s()/(x)=0.24 mm, mean difference±s=(0.04±0.24)mm;Posterior wall:r=0.95,s()/(x)=0.22 mm,mean difference±s=(0.03±0.24)mm］.Analysis of the velocity profile by TDI method showed the velocity at each measured point correlated well with the velocity obtained from the video images ［Anterior wall:r=0.97,s()/(x)=0.30 mm, mean difference±s=-(0.04±0.28)mm;Posterior wall:r=0.97,s()/(x)=0.30 mm, mean difference±s=(0.04±0.28)mm ］.Conclusions The balloon model provides a new independent method for the validation of TDI data, it demonstrated that the present TDI system is reliable for measuring wall motion distance and velocity.
