中国医疗器械杂志
中國醫療器械雜誌
중국의료기계잡지
CHINESE JOURNAL OF MEDICAL INSTRUMENTATION
2013年
4期
308-310
,共3页
体层摄影术%X线计算机%辐射剂量%曝光时间%方案优化
體層攝影術%X線計算機%輻射劑量%曝光時間%方案優化
체층섭영술%X선계산궤%복사제량%폭광시간%방안우화
tomography%X-ray computer%radiation dose%exposure time%program optimization
目的从工作、实践中总结SPECT/CT经验方法，得出优化的CT扫描方案，减少患者辐射剂量，节省CT球管曝光时间。方法在4个月的连续临床实例中，缓慢地改变各级参数，优化采集条件，回顾性分析CT照射剂量，同时统计每月CT球管及人均球管曝光时间等数据。结果优化后平均每人次的CT照射剂量降低84.72%。其中常规骨、小关节骨、脑、心脏辐射分别降低83.82%、88.80%、86.78%、84.49%，差异均有统计学意义。优化后月CT球管曝光时间为2031 s。结论该CT扫描优化方案，在核医学临床使用中效果好，减少人均辐射同时降低CT球管曝光时间，提高球管使用寿命，可以得到一定的推广。
目的從工作、實踐中總結SPECT/CT經驗方法，得齣優化的CT掃描方案，減少患者輻射劑量，節省CT毬管曝光時間。方法在4箇月的連續臨床實例中，緩慢地改變各級參數，優化採集條件，迴顧性分析CT照射劑量，同時統計每月CT毬管及人均毬管曝光時間等數據。結果優化後平均每人次的CT照射劑量降低84.72%。其中常規骨、小關節骨、腦、心髒輻射分彆降低83.82%、88.80%、86.78%、84.49%，差異均有統計學意義。優化後月CT毬管曝光時間為2031 s。結論該CT掃描優化方案，在覈醫學臨床使用中效果好，減少人均輻射同時降低CT毬管曝光時間，提高毬管使用壽命，可以得到一定的推廣。
목적종공작、실천중총결SPECT/CT경험방법，득출우화적CT소묘방안，감소환자복사제량，절성CT구관폭광시간。방법재4개월적련속림상실례중，완만지개변각급삼수，우화채집조건，회고성분석CT조사제량，동시통계매월CT구관급인균구관폭광시간등수거。결과우화후평균매인차적CT조사제량강저84.72%。기중상규골、소관절골、뇌、심장복사분별강저83.82%、88.80%、86.78%、84.49%，차이균유통계학의의。우화후월CT구관폭광시간위2031 s。결론해CT소묘우화방안，재핵의학림상사용중효과호，감소인균복사동시강저CT구관폭광시간，제고구관사용수명，가이득도일정적추엄。
Objective In order to reduce patients’ radiation doses and decrease the exposure time of the CT Tube. By summarizing experiential methods from the previous practice work, we hope to draw an optimized scheme of CT scanner. Methods We analyzed the continuous clinical examples in four months, changed the different levels of parameters slowly, optimized acquisition conditions and retrospected the CT radiative dose. In the meantime, we counted the monthly CT Bulb exposure time, exposure time per capita tube data and so on. Results Compared with former result, the average CT radiative dose per person is decreased 84.72%, which conventional bone, the smal joints of the bone, the brain and the heart radiation reduced respectively 83.82%, 88.80%, 86.78% and 84.49%, and the differences are statistical y significant. The exposure time of optimized CT Tube is 2 031 s. Conclusions Using the CT scan optimization scheming has great efforts in the practice of clinical nuclear medicine, can reduce the exposure time of the CT Tube and improve the lifetime of the bulb. Therefore, it can be widely used.
