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随着介入放射技术的开展,DSA 技术已广泛应用于全身的血管造影,并已在放射领域内发挥重要作用。回顾性分析1992年10月～1994年10月共计523例,2198次各类 DSA 图像质量,作者认为,DSA 图像的优劣,除了 DSA机器性能影响外,还具有其它诸多因素,包括固定因素,相对固定因素和可变因素三类。本文就DSA 图像质量控制,测出 DSA 图像的密度值,提出改善图像质量的保证。材料与方法一、机器设备德国 SIEMENS 配套 POLYTRON
With the development of interventional radiology technology, DSA technology has been widely used in whole body angiography and has played an important role in the field of radiation. A total of 523 cases and 2198 DSA images of various types were reviewed from October 1992 to October 1994. The authors believe that the quality of DSA images has many other factors, including fixed factors, in addition to the performance of DSA machines. There are three types of relatively fixed factors and variable factors. In this paper, DSA image quality control is used to measure the density of DSA images, and the guarantee of improving image quality is proposed. Materials and methods I. Machinery and equipment Germany SIEMENS supporting POLYTRON