Chapman D R, Garcia E V, Berman D S, Levy R, Van Train K, Waxman A D
J Nucl Med. 1982 Jan;23(1):42-7.
The widespread clinical applications of multiple-gated equilibrium cardiac blood-pool scintigraphy for qualitative assessment of regional left-ventricular wall motion has raised questions regarding the limits of detectable motion. Under conditions simulating some of the elements of cardiac motion, and using variables associated with multiple-gated equilibrium scintigraphy, we have studied these limits both theoretically and experimentally. The theory of detecting simple edge motion as a function of motion magnitude, system resolution, and counts per pixel is studied both conceptually and by statistical analysis using a line-source activity distribution represented as Gaussian. The experiment involves six independent observers in the qualitative evaluation of the presence and location of edge motion of two cylindrical activity distributions as displayed by a computer.
多门控平衡心血池闪烁显像术在临床上广泛应用于定性评估局部左心室壁运动，这引发了关于可检测运动极限的问题。在模拟心脏运动某些要素的条件下，利用与多门控平衡闪烁显像术相关的变量，我们从理论和实验两方面研究了这些极限。通过将线源活度分布表示为高斯分布，从概念上并借助统计分析研究了将简单边缘运动检测为运动幅度、系统分辨率和每像素计数的函数的理论。实验包括六名独立观察者对计算机显示的两个圆柱形活度分布的边缘运动的存在和位置进行定性评估。
