数字化X射线摄影系统（DR）质量控制教程（采用奥利科Piranha X线多参数测试仪）

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                    <section><section powered-by="gulangu"><section><section><p><img src="image/20201019/d21eb6c5a34b1fc298ea56b8fba50f26_1.gif" /></p></section></section></section><section powered-by="gulangu"><section><section><p><br  /></p></section></section></section><section powered-by="gulangu"><section><section><section><section powered-by="gulangu"><section><section><p>DR质量控制项目</p></section></section></section></section></section></section></section><section powered-by="gulangu"><section><section><p>&nbsp; &nbsp; &nbsp; &nbsp;DR质量控制项目包括X射线管的电压、X射线管的电流、加载时间、辐射输出的线性、辐射输出的重复性、半价层、辐射野与光野的一致性、空间分辨力、密度分辨力、可见灰度级。</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/ad63368f9564084ad29402b600c97132_2.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/9c4969afdcccddaf8995506c5a200fe1_3.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/71736679a8d3f25fca954477d139c3f6_4.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><section><section powered-by="gulangu"><section><section><p>DR质量控制步骤</p></section></section></section></section></section></section></section><section powered-by="gulangu"><section><section><p>&nbsp; &nbsp; &nbsp; &nbsp;由于本次设备配备的X线检测装置只有X线多参数测试仪，只能测试管电压、加载时间、辐射输出的线性、辐射输出的重复性等参数，所以其具体操作如下。</p><p><br  /></p><p>1、把X线多参数测试仪放置光野中心对齐，球管位置离X线多参数测试仪100mm左右，打开X线多参数测试仪开关。</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/5c22ed4146139319705b2e8dd098935b_5.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/610c4612451a457dfa719e2ab6d8674e_6.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>2、打开电脑软件，选择摄片模式，进入DR曝光界面，一切等待软件准备就绪。</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/a2232c33dd53bcc2aca78231410a8b2f_7.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>3、测试管电压，一般选择条件100mAs、100ms；测试管电压60KV、70KV、80KV，每一个管电压测试3次，记录管电压。</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/bcbd72efbaacbc7f7b0d568db3b349e4_8.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>&nbsp; &nbsp; &nbsp; &nbsp;计算测试结果公式如下：</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/819850012393209b6b9bb55813f3b448_9.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>&nbsp; &nbsp; &nbsp; &nbsp;V为管电压预置值；V0为管电压实测值的平均值</p><p>4、测试加载时间，一般选择条件100KV、100ms条件下，测试加载时间50ms、100ms、200ms，每一个加载时间测试3次，记录曝光时间。</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/dcd7689e6d434537194eee6a6a67e95b_10.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>&nbsp; &nbsp; &nbsp; &nbsp;计算测试结果公式如下：</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/393250f5954b2661c21f0b324a0e35cf_11.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>&nbsp; &nbsp; &nbsp; &nbsp;T为管电压加载时间预置值；T0为管电压加载时间实测值的平均值。</p><p><br  /></p><p>5、测试辐射输出的线性，一般条件选择管电压为100KV、SSD为100cm，测试电流时间积分5mAs、10mAs,测试其空气比释动能3次，记录空气比释动能3次。</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/ecde1b01f5810e14b584e0178ab87fe8_12.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>&nbsp; &nbsp; &nbsp; &nbsp;计算测试结果公式如下：</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/b30a574d25a0e47e927533d17d2b7c4a_13.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>&nbsp; &nbsp; &nbsp; &nbsp;式中K1和K2为两档的空气比释动能测量平均值；Q1和Q2为两档预置的电流时间积(mAs)值。</p><p><br  /></p><p>6、测试辐射输出的重复性，一般条件选择100KV、100mAs、100ms、SSD为100cm，曝光10次，记录空气比释动能。</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/ecde1b01f5810e14b584e0178ab87fe8_12.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>&nbsp; &nbsp; &nbsp; &nbsp;计算测试结果公式如下：</p></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/27e5b91010a634ae56975c4fdc0d334b_15.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p>&nbsp; &nbsp; &nbsp; &nbsp;Ki为单次曝光的输出量；K为n次曝光的平均值；n为曝光次数。</p></section></section></section><section powered-by="gulangu"><section><section><p>X射线检测项目与技术要求</p></section><p><img src="image/20201019/9b8fc6843656141c5f2011db30ca64d2_16.png" /></p> <section></section></section></section><section powered-by="gulangu"><section><section><p><img src="image/20201019/022818a593872fec6b5458219feee17f_17.jpg" /></p></section></section></section><section powered-by="gulangu"><section><section><p><br  /></p></section></section></section><section powered-by="gulangu"><section><section><section powered-by="gulangu"><section><section><p>欢</p></section></section></section></section><section><section powered-by="gulangu"><section><section><p>迎</p></section></section></section></section><section><section powered-by="gulangu"><section><section><p>关</p></section></section></section></section><section><section powered-by="gulangu"><section><section><p>注</p></section></section></section></section></section></section><section powered-by="gulangu"><section><section><p><br  /></p></section></section></section><section powered-by="gulangu"><section><section><section powered-by="gulangu"><section><section><p><img src="image/20201019/4d18597d1761f5dad9f4fd5c92c86496_18.jpg" /></p></section></section></section></section><section><section powered-by="gulangu"><section><section></section></section></section></section><section><section powered-by="gulangu"><section><section><p>关注我们</p><p>一起涨姿势！</p></section></section></section></section></section></section></section>