Evaluation of a clinical scintillation camera with pulse tail extrapolation electronics.
Evaluation of a clinical scintillation camera with pulse tail extrapolation electronics.
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发表时间：
1989-09
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通讯作者：
T. Lewellen;A. Bice;K. R. Pollard;J. Zhu;M. E. Plunkett
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作者：
T. Lewellen;A. Bice;K. R. Pollard;J. Zhu;M. E. Plunkett
一个新的闪烁相机，设计的高事件率的能力，性能进行了评估。该系统由一个400毫米视场的Nal（T1）照相机和61个光电倍增管和改进的通用电气Starport电子设备组成。该系统的一个重要特征是用于执行脉冲尾外推和分离脉冲堆积事件中所涉及的单个脉冲的电路。系统死区时间，泛场均匀性，能量分辨率，线性，空间分辨率，和酒吧幻影图像质量进行了评价，计数率高达200 kcps，在20%的峰值窗口。我们的研究结果表明，这种相机的设计不会损害图像质量在正常的临床计数率和更高的事件率可以提供更好的图像质量和提高灵敏度，目前在核医学中使用的许多愤怒相机。
The performance of a new scintillation camera, designed for high event rate capability, was evaluated. The system consisted of a 400 mm field-of-view Nal(T1) camera with 61 photomultiplier tubes and modified General Electric Starport electronics. A significant feature of the system was circuitry for performing pulse tail extrapolation and separation of individual pulses involved in pulse pile-up events. System deadtime, flood field uniformity, energy resolution, linearity, spatial resolution, and bar phantom image quality were evaluated for count rates up to 200 kcps in a 20% photopeak window. Our results indicate that this camera design does not compromise image quality at normal clinical count rates and at higher event rates can provide better image quality and increased sensitivity over many Anger cameras currently employed in nuclear medicine.