| 赵士安,欧向明,王作岭,岳保荣,尉可道.RD-98智能型诊断X射线剂量仪的研制[J].中华放射医学与防护杂志,2001,21(1):50-52 |
| RD-98智能型诊断X射线剂量仪的研制 |
| Design of RD-98 X-ray Diagnostic Dosimeter |
| 投稿时间：2000-04-13 |
| DOI： |
| 中文关键词: X射线 诊断剂量仪 半导体 探测器 |
| 英文关键词:Xray Diagnostic Dosimeter Semiconductor Detect |
| 基金项目:卫生部科学基金课题资助项目(981082) |
|
| 摘要点击次数: 2924 |
| 全文下载次数: 1884 |
| 中文摘要: |
| 目的研制了一种响应时间快,能量响应好,测量范围宽,智能化程度高,操作简便的剂量仪。方法探测器采用目前最新研制的半导体元件作为接受射线信号的器件,通过能量补偿满足探测器能量响应要求。读数仪对测量信号的快速响应及自动更换量程等智能化功能是靠数字化电路和单片机实现的。结果目前已研制的RD-98智能型放射诊断X射线剂量仪可提供剂量测量(0.001～9999mGy),剂量率测量(0.001～9999mGy/s)和曝光时间测量(0.001～9999s).探测器的能量响应好于5%(55～150kVp),剂量仪测量重复性好于1%.结论RD-98智能型诊断X射线剂量仪可以单独使用或与其他质控检测工具一起使用实现诊断X射机质量控制。 |
| 英文摘要: |
| Objective RD 98 X-ray Diagnostic Dosimeter was designed and developed with the characteristics of fast response,wide measuring range and independence of X-ray energy in order to improve the quality of imagine and reduce the radiation dose delivered to the tested persons under the diagnostic X-ray machine.It is suitable for measurements of dose,dose rate and exposure time in the conventional radiology. Method The detector of RD 98 X-ray Diagnostic Dosimeter is made of semiconductor of Si diode as a receiver to radiation signal.To meet the requirements of energy response,the detector is compensated by special filters.The realization of all the automatic functions is based on the CPU installed in the reader with special softwares. Results RD 98 X-ray Diagnostic Dosimeter is able to measure the dose ranging from 0.001 mGy to 9999 mGy,the dose rate ranging from 0.001 mGy/s to 9999 mGy/s and the exposure time ranging from 0.001 second to 9999 second.The energy response of the dosimeter from 55 keV to 150 keV is better than 5% and its reproducibility during one month is within 99%.The readings are displayed by 4 digit LED and RS-232 port is matched for the connection of a mini-printer. Conclusion The RD 98 X-ray Diagnostic Dosimeter can be used as a test tool by itself or by a suitable combination with other equipments for quality control in X-ray diagnostic field of hospitals. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|