The measurement of multidimensional myocardial dynamics using scattered radiation fields.
The measurement of multidimensional myocardial dynamics using scattered radiation fields.
复制标题
使用散射辐射场测量多维心肌动力学。
DOI：
10.1097/00004424-198409000-00010
复制
发表时间：
1984
影响因子：
6.7
通讯作者：
Zelis,RF
中科院分区：
文献类型：
--
作者：
McInerney,JJ;Herr,MD;Kenney,ES;Copenhaver,GL;Zelis,RF
基于对散射辐射场的分析，研制了一种测量心肌动力学的新的X射线照相装置。该装置由一组探测器组成，用于监测来自心外膜表面的光子散射。数据合成可以实时动态显示心外膜表面的二维和三维。该系统已经在近胸犬身上进行了测试。闭合胸腔内的心外膜表面位移可测量到0.1 mm(SD)。右室或左室表面可以在给定的扫描中被监测。在探测器的直接视野内的心肌外边界后面或前面的表面以同样的精度被定位。除了使用低水平的透视X射线外，这一过程完全是非侵入性的。原型系统的辐射剂量水平和组件成本都很低。探测器系统安装在标准的透视X射线发生器上。
A new radiographic device, based upon the analysis of scattered radiation fields, has been developed to measure myocardial dynamics. The device consists of an array of detectors arranged to monitor photons scattering from the epicardial surface. Data synthesis permits real-time dynamic displays of the epicardial surface in two and three dimensions. The system has been tested on close-chest canines. Epicardial surface displacements within the closed chest cavity can be measured to 0.1 mm (SD). Right or left ventricular surfaces may be monitored on a given scan. Surfaces behind or in front of outer myocardial boundaries within the direct field of view of the detectors are located with equal accuracy. Except for the use of low levels of fluoroscopic x-rays, the procedure is completely noninvasive. Radiation dose levels and component costs for the prototype system are modest. The detector system attaches to a standard fluoroscopic x-ray generator.