Okusako Kenji, Shogaki Masachika, Yokoyama Kouji, Ogawa Takayoshi, Tanaka Katsuhisa, Ichida Takao, Kishimoto Kenji, Hatagawa Masakatsu, Okuyama Kazuo, Kudoh Hiroaki, Tanaka Saori, Nakamura Kenji, Ikeda Sigeyuki, Suzuki Katsumi
Department of Radiology, Osaka City University Hospital.
Igaku Butsuri. 2002;22(4):255-63.
We had the chance of clinical studies by new proto-type Digital Subtraction Angiography (DSA) System with the Flat Panel Detector (FPD). That system has two types of detector, FPD and I.I.-CCD camera, and we can compare with image quality in clinical. We measured and discussed about the physical characteristic data of both detectors. Up to physical characteristic evaluation, FPD has good MTF and SNR performance, comparing with I.I.-CCD camera. In clinical evaluation, DSA image of FPD was superior to that of I.I.-CCD camera by visual comparison of medical doctors. Finally we discussed about the feasibility of replacement of detectors. We expect that DSA system will accept FPD in near future.
我们有机会使用配备平板探测器（FPD）的新型数字减影血管造影（DSA）原型系统进行临床研究。该系统有两种探测器，即FPD和影像增强器-电荷耦合器件（I.I.-CCD）相机，我们可以在临床上比较它们的图像质量。我们测量并讨论了两种探测器的物理特性数据。在物理特性评估方面，与I.I.-CCD相机相比，FPD具有良好的调制传递函数（MTF）和信噪比（SNR）性能。在临床评估中，通过医生的视觉比较，FPD采集的DSA图像优于I.I.-CCD相机采集的图像。最后，我们讨论了探测器更换的可行性。我们预计DSA系统在不久的将来会采用FPD。
