motion sensitivity
1.Conclusion：1.AMM could be an effective method on evaluation the abnormal motion of regional wall motion of left ventricle and the sensitivity and specificity of AMM on evaluation the abnormal motion of regional wall motion of left ventricle of CAD are 80.64% and 88.23%.
2.Results:There was a significant difference on the display of the timing and magnitude of endocardial motion between pre and post DSE(P<0.01). Sensitivity,specificity,accuracy,and positive predictive of CK images in distinguishing viability from myocardial infarction were96.43%,66.67%,91.18%,and93.10%respectively.
3.Assuming 35% as a cut off for motion improvement of the left ventricular dyskinetic segments the increase in Vs by DSE yielded 86 9% of sensitivity,86 1% of specificity and 86 6%. of accuracy for predicting hibernating myocardium after PTCA,whereas positive predicting and negative predicting accuracy were 88 9% and 83 8%,respectively.
4.The optokenitic perceptive quality and sensitivity of optokenitic motion could be separated on. the basis of optokenitic electronystagmogram provided the distance between Arabic numerals and English letters was 10° and the velocity was 90~110°/s.
5.The slice sensitivity profile, equal to the convolution of the detector array response function and the table motion function, is anti-symmetric with respect to the abscissa axis which connects the slice center and the source location in the slice, but the longitudinal bandwidth is substantially superior to that of conventional CT under equivalent condition.
