High-intensity flash x-ray apparatus for biomedical radiography
High-intensity flash x-ray apparatus for biomedical radiography
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用于生物医学放射成像的高强度闪光 X 射线设备
DOI：
10.1063/1.1138609
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发表时间：
1986
影响因子：
1.6
通讯作者：
F. Hoshino
中科院分区：
文献类型：
--
作者：
E. Sato;H. Isobe;F. Hoshino
介绍了一种新型生物医用软闪光X射线(FX)管的结构。FX装置可用于50-90KV的电容器充电电压和20-40KA的峰值电流。FX波形的电脉冲宽度几乎是恒定的，其值约为0.3μS，有效焦斑随电容器充电电压、阳极-阴极(A-C)距离等不同而变化，直径在0.2-3.0 mm之间。我们选择了两种电极组合：(A)正常聚焦和高剂量率；(B)精细聚焦和低剂量率。FX强度由电容器充电电压和A-C距离决定，而FX质量(平均频谱分布)由FX管的平均电压和金属滤光片的插入决定。FX管的平均电压随电容器充电电压和交流间隙阻抗的不同而变化。通过控制FX的强度、质量和焦点大小，获得了各种清晰的FX图像。我们将富士计算机X线摄影(FCR)与我们的FX摄影相结合，通过控制FX质量和焦点大小，我们获得了一些有趣的生物医学影像。
The construction of a soft flash x‐ray (FX) apparatus with a new type of FX tube for biomedical use is described. The FX apparatus may be used for condenser charging voltages of 50–90 kV and peak currents of 20–40 kA. The electric pulse width of the FX waveforms was almost constant and its value was about 0.3 μs. The effective focal spot varied according to the condenser charging voltage, the anode–cathode (A–C) distance, etc., ranging from 0.2–3.0 mm in diameter. We selected two combinations of electrodes: (a) for normal focusing and a high dose rate; (b) for fine focusing and a low dose rate. The FX intensity was determined by the condenser charging voltage and the A–C distance, while the FX quality (average spectrum distribution) was determined by the average voltage of the FX tube and insertion of metal filters. The average voltage of the FX tube varied according to the condenser charging voltage and the A–C gap impedance. Various clear FX images were obtained by controlling the FX intensity, quality, and the focal spot size. We used Fuji Computed Radiography (FCR) in conjunction with our FX radiography, and by controlling the FX quality and the focal spot size, we obtained some interesting biomedical radiograms.