Objective evaluation of regional left ventricular wall motion during dobutamine stress echocardiographic studies using segmental analysis of color kinesis images.
Objective evaluation of regional left ventricular wall motion during dobutamine stress echocardiographic studies using segmental analysis of color kinesis images.
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使用彩色运动图像的分段分析，客观评估多巴酚丁胺负荷超声心动图研究期间的区域左心室壁运动。
DOI：
10.1016/s0735-1097(99)00233-8
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发表时间：
1999
影响因子：
24
通讯作者：
V. Mor
中科院分区：
文献类型：
--
作者：
R. Koch;R. Lang;MARIA J. Garcia;L. Weinert;J. Bednarz;Claudia E. Korcarz;Brendan Coughlan;Alan I. Spiegel;Eugene H. Kaji;K. Spencer;V. Mor
OBJECTIVESTo test the feasibility of objective and automated evaluation of echocardiographic stress tests, we studied the ability of segmental analysis of color kinesis (CK) images to detect dobutamine-induced wall motion abnormalities and compared this technique with inexperienced reviewers of conventional gray-scale images.BACKGROUNDConventional interpretation of stress echocardiographic studies is subjective and experience dependent.METHODSCK images were obtained in 89 of 104 consecutive patients undergoing clinical dobutamine stress studies and were analyzed using custom software to calculate regional fractional area change in 22 segments in four standard views. Each patient’s data obtained at rest was used as a control for automated detection of dobutamine-induced wall motion abnormalities. Independently, studies were reviewed without CK overlays by two inexperienced readers who classified each segment’s response to dobutamine. A consensus reading of two experienced reviewers was used as the gold standard for comparisons. In a subgroup of 16 patients, these consensus readings and CK detection of wall motion abnormalities were compared with coronary angiography.RESULTSThe consensus reading detected ischemic response to dobutamine in 43 of 1958 segments in 23 of 89 patients. Automated detection of stress-induced wall motion abnormalities correlated more closely with the standard technique than the inexperienced reviewers (sensitivity 0.76 vs. 0.55, specificity 0.98 vs. 0.94 and accuracy 0.97 vs. 0.92). When compared with coronary angiography in a subgroup of patients, analysis of CK images differentiated between normal and abnormal wall motion more accurately than expert readers of gray-scale images (accuracy of 0.93 vs. 0.82).CONCLUSIONSAnalysis of CK images allows fast, objective and automated evaluation of regional wall motion, sensitive enough for clinical dobutamine stress data and more accurate than inexperienced readers. This method may result in a valuable adjunct to conventional visual interpretation of dobutamine stress echocardiography.
用于短轴二维超声心动图图像的第二代基于计算机的边缘检测算法：观察者间变异性的准确性和改进。
DOI：
10.1016/s0894-7317(14)80500-2
发表时间：
1990
期刊：
Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography
影响因子：
--
作者：
Geiser,EA;Conetta,DA;Limacher,MC;Stockton,VO;Oliver,LH;Jones,B
通讯作者：
Jones,B
使用二维超声心动图定量区域左心室功能的计算机辅助方法。
DOI：
10.1016/s0894-7317(14)80100-4
发表时间：
1992
期刊：
Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography
影响因子：
--
作者：
Sklenar,J;Jayaweera,AR;Kaul,S
通讯作者：
Kaul,S
DOI：
10.1016/0735-1097(92)90484-5
发表时间：
1992-02-01
影响因子：
24
作者：
PEREZ, JE;WAGGONER, AD;SOBEL, BE
通讯作者：
SOBEL, BE