中华放射医学与防护杂志
中華放射醫學與防護雜誌
중화방사의학여방호잡지
Chinese Journal of Radiological Medicine and Protection
2010年
1期
89-92
,共4页
徐辉%宛然%郭丽%王建超%岳保荣
徐輝%宛然%郭麗%王建超%嶽保榮
서휘%완연%곽려%왕건초%악보영
数字乳腺摄影%质量控制%平均腺体剂量%影像质量
數字乳腺攝影%質量控製%平均腺體劑量%影像質量
수자유선섭영%질량공제%평균선체제량%영상질량
Digital mammography%Quality control%Average glandular dose%Image quality
目的 对3套数字乳腺摄影系统进行质量控制检测与评价.方法 应用欧洲乳腺癌普查和诊断质量控制导则中推荐的方法,结合国内乳腺摄影评价标准,对3套数字乳腺摄影系统进行X线发生器性能质量控制检测与评价;分别应用直接数字化X线摄影技术(DR)、相位对比乳腺摄影(PCM)和计算机X线摄影技术(CR)系统在4个厚度下(30、40、50及60 mm)对乳腺专用对比度细节检测模体(CDMAM 3.4)进行AEC曝光成像,计算与评价每一厚度下的平均腺体剂量(AGD)和影像质量因子(IQF).结果 DR和CR的x线机性能检测符合现有标准;等效PMMA厚度分别为30、40、50、60 mm时,DR系统的AGD分别为1.20、1.42、1.75、2.20 mGy;PCM系统AGD分别是0.82、1.19、1.33、1.70 mGy;CR系统AGD为0.59、0.88、1.47、2.19 mGy.在相应的模体厚度下,DR系统的IQF值为21.36、21.57、27.25和30.58;PCM和CR系统的IQF值分别为28.02、29.10、35.90、41.24和39.78、39.30、43.85、48.08.结论 GBZ 186-2007标准不适用于PCM系统X线机性能部分性能的评价.本研究的3套系统自动曝光下平均腺体剂量均符合欧洲标准.在国内检测规范欠缺的情况下,可参考国际标准或指南对数字乳腺系统进行常规监测.
目的 對3套數字乳腺攝影繫統進行質量控製檢測與評價.方法 應用歐洲乳腺癌普查和診斷質量控製導則中推薦的方法,結閤國內乳腺攝影評價標準,對3套數字乳腺攝影繫統進行X線髮生器性能質量控製檢測與評價;分彆應用直接數字化X線攝影技術(DR)、相位對比乳腺攝影(PCM)和計算機X線攝影技術(CR)繫統在4箇厚度下(30、40、50及60 mm)對乳腺專用對比度細節檢測模體(CDMAM 3.4)進行AEC曝光成像,計算與評價每一厚度下的平均腺體劑量(AGD)和影像質量因子(IQF).結果 DR和CR的x線機性能檢測符閤現有標準;等效PMMA厚度分彆為30、40、50、60 mm時,DR繫統的AGD分彆為1.20、1.42、1.75、2.20 mGy;PCM繫統AGD分彆是0.82、1.19、1.33、1.70 mGy;CR繫統AGD為0.59、0.88、1.47、2.19 mGy.在相應的模體厚度下,DR繫統的IQF值為21.36、21.57、27.25和30.58;PCM和CR繫統的IQF值分彆為28.02、29.10、35.90、41.24和39.78、39.30、43.85、48.08.結論 GBZ 186-2007標準不適用于PCM繫統X線機性能部分性能的評價.本研究的3套繫統自動曝光下平均腺體劑量均符閤歐洲標準.在國內檢測規範欠缺的情況下,可參攷國際標準或指南對數字乳腺繫統進行常規鑑測.
목적 대3투수자유선섭영계통진행질량공제검측여평개.방법 응용구주유선암보사화진단질량공제도칙중추천적방법,결합국내유선섭영평개표준,대3투수자유선섭영계통진행X선발생기성능질량공제검측여평개;분별응용직접수자화X선섭영기술(DR)、상위대비유선섭영(PCM)화계산궤X선섭영기술(CR)계통재4개후도하(30、40、50급60 mm)대유선전용대비도세절검측모체(CDMAM 3.4)진행AEC폭광성상,계산여평개매일후도하적평균선체제량(AGD)화영상질량인자(IQF).결과 DR화CR적x선궤성능검측부합현유표준;등효PMMA후도분별위30、40、50、60 mm시,DR계통적AGD분별위1.20、1.42、1.75、2.20 mGy;PCM계통AGD분별시0.82、1.19、1.33、1.70 mGy;CR계통AGD위0.59、0.88、1.47、2.19 mGy.재상응적모체후도하,DR계통적IQF치위21.36、21.57、27.25화30.58;PCM화CR계통적IQF치분별위28.02、29.10、35.90、41.24화39.78、39.30、43.85、48.08.결론 GBZ 186-2007표준불괄용우PCM계통X선궤성능부분성능적평개.본연구적3투계통자동폭광하평균선체제량균부합구주표준.재국내검측규범흠결적정황하,가삼고국제표준혹지남대수자유선계통진행상규감측.
Objective To carry out the quality control testing and evaluation for three digital mammography systems.Methods The performance of three digital mammography systems was assessed by applying methods recommended in the European guidelines for quality assurance in breast cancer screening and diagnosis and Chinese specification for testing of quality control in X-ray mammography.The performance of X-ray generator of three digital mammography systems were tested and evaluated.CDMAM 3.4 phantom with four different thickness(30,40,50,60 mm) were exposured in DR,PCM,and CR system,respectively.The average glandular dose (AGD) value was measured and image quality figure (IQF) analysis was performed in each thickness.Results The X-ray machine performance of DR and CR was in accordance with existing standard,however the standard was inappropriate to evaluate part of X-ray machine performance of PCM system.The AGDs for system DR were 1.20,1.42,1.75 and 2.20 mGy for 30,40,50 and 60 mm PMMA thickness,respectively.The respective AGDs for system PCM and CR were 0.82,1.19,1.33,1.70 mGy and 0.59,0.88,1.47,2.19 mGy.For the same phantom thickness sequence,the IQFs were 21.36,21.57,27.25 and 30.58 for system DR,28.02,29.10,35.90,and 41.24 for system PCM,whereas they were 39.78,39.30,43.85 and 48.08 for system CR.Conclusions The AGDs of all three systems were in accordance with the values recommended in European guideline.The AGD and IQF could provide an effective way for performance assessment and constancy checks for digital mammography systems.
