Particle image‐resolution test object.
Particle image‐resolution test object.
复制标题
粒子图像分辨率测试对象。
DOI：
10.7863/jum.1983.2.5.195
复制
发表时间：
1983
影响因子：
2.3
通讯作者：
W. Clayman
中科院分区：
文献类型：
--
作者：
A. Goldstein;W. Clayman
提出了一种高主体对比度图像分辨率的模糊定义和测量技术。利用模糊原理开发了一种新的测试对象，并进行了可行性测试。在开发这种新的测试对象时，在明胶基础上进行了各种大小和浓度的小塑料颗粒的测试。为常用的临床换能器频率选择最佳粒径和浓度。测试图像是用不同焦距特性的静态和实时传感器获得的。在所有情况下，建议的测试对象都清楚地指出了最佳高主体对比度图像分辨率的区域（焦点区域）。所提出的高主体对比度图像分辨率模糊定义和测量技术的优点包括：测试对象简单，易于执行和解释测量，适用于所有类型的实时扫描仪，并且只需要一次扫描即可获得所有图像深度的轴向和横向分辨率信息。
A blur definition and measurement technique for high‐subject‐contrast image resolution is proposed. A new test object utilizing the blur principle has been developed and feasibility tested. In developing this new test object, tests of various sizes and concentrations of small plastic particles in a gelatin base were performed. Optimum particle sizes and concentrations were selected for the popular clinical transducer frequencies. Test images were obtained with static and real‐time transducers of various focal properties. In all cases the proposed test object clearly indicated the zone (focal zone) of optimum high‐subject‐contrast image resolution. The advantages of the proposed blur definition and measurement technique of high‐subject‐contrast image resolution include: test object simplicity, ease of performing and interpreting the measurement, usefulness for all types of real‐time scanners, and the need for only one scan for both axial and lateral resolution information at all image depths.