CAJ | 학술논문

目的：明确全景数字化乳腺X线摄影术（FFDM）中患者受到的辐射剂量。方法收集分析1397例患者（6008幅图像）在进行全数字化乳腺摄影过程中的平均腺体剂量（AGD）以及表面入射（ESE）剂量。这些受试者在进行FFDM检查时，使用自动优化参数（AOP）选取三种不同模式，分别为标准模式（STD）、对比度优先模式（CNT）或剂量优先模式（DOSE）。另外，曝光条件包括管电压（kVp）、管电流（mAs），以及靶面/滤线栅（target/filter）组合也被列在评估范围之中。结果三种AOP曝光模式下，患者所受辐射剂量由大到小依次为CNT＞STD＞DOSE。这三种曝光模式的剂量差异主要取决于mAs的选择。STD和DOSE模式下，AGD与乳腺压迫厚度有很好的相关性。但是，在CNT模式中，AGD与乳腺压迫厚度的相关性受乳腺压迫厚度的范围以及患者年龄的影响。结论本研究通过明确三种AOP模式的曝光剂量和曝光特征，为了解患者在FFDM中所受的辐射剂量提供了有用的信息。
목적：명학전경수자화유선X선섭영술（FFDM）중환자수도적복사제량。방법수집분석1397례환자（6008폭도상）재진행전수자화유선섭영과정중적평균선체제량（AGD）이급표면입사（ESE）제량。저사수시자재진행FFDM검사시，사용자동우화삼수（AOP）선취삼충불동모식，분별위표준모식（STD）、대비도우선모식（CNT）혹제량우선모식（DOSE）。령외，폭광조건포괄관전압（kVp）、관전류（mAs），이급파면/려선책（target/filter）조합야피렬재평고범위지중。결과삼충AOP폭광모식하，환자소수복사제량유대도소의차위CNT＞STD＞DOSE。저삼충폭광모식적제량차이주요취결우mAs적선택。STD화DOSE모식하，AGD여유선압박후도유흔호적상관성。단시，재CNT모식중，AGD여유선압박후도적상관성수유선압박후도적범위이급환자년령적영향。결론본연구통과명학삼충AOP모식적폭광제량화폭광특정，위료해환자재FFDM중소수적복사제량제공료유용적신식。
Objective To investigate the radiation dose delivered to the patients in full field digital mammography (FFDM). Methods Here, we analyzed the average glandular dose (AGD) and entrance surface exposure (ESE) of 1397 patients (6008 images) who underwent mammographic examinations by FFDM in three modes with automatic optimization of parameters (AOP), namely STD for standard mode, CNT for contrast mode and DOSE for dose mode. In addition, exposure factors including kVp, tube loading (mAs), and target/filter combination were evaluated. Results The patient dose was sorted as CNT>STD>DOSE. The dose difference among the three AOP modes was mainly attributed to the selection of mAs. The AGD and breast compressed thickness were well correlated in STD and DOSE modes. However, the correlation between CNT-delivered AGD and breast compressed thickness was dependent on the range of the breast thickness and patient age. Conclusion The findings on dose and exposure characteristics of the three AOP modes get useful message of patient dose in the acquisition of FFDM.