CAJ | 학술논문

目的：探讨钼铑双靶剂量优先模式在乳腺低辐射剂量检查中的价值。方法利用钼铑双靶乳腺机,对40例乳腺癌患者双侧乳腺分别进行头尾位(CC)和内外斜位(MLO)位标准模式和剂量优先模式摄影,对比分析160幅乳腺图像质量,分别记录平均腺体剂量(AGD)值和皮肤入射剂量(ESE)值。结果2种乳腺摄影模式均获得良好的图像质量,经检验两者间无显著性差异(χ2=0.427,P >0.05)。与标准模式相比,剂量优先模式摄影 CC 位 AGD 值降低约28.63%,ESE 值降低约28.28%,两者间具有显著性差异(t AGD =12.928,P <0.05,t ESE =8.850,P <0.05)；MLO 位 AGD 值降低约26.33%,ESE 值降低约29.43%,两者间具有显著性差异(t AGD =11.006,P <0.05,t ESE =8.400,P <0.05)。结论在获取同等乳腺图像质量的情况下,钼铑双靶乳腺 X 射线摄影检查中剂量优先模式较标准模式能够有效降低受检者的辐射剂量。
목적：탐토목로쌍파제량우선모식재유선저복사제량검사중적개치。방법이용목로쌍파유선궤,대40례유선암환자쌍측유선분별진행두미위(CC)화내외사위(MLO)위표준모식화제량우선모식섭영,대비분석160폭유선도상질량,분별기록평균선체제량(AGD)치화피부입사제량(ESE)치。결과2충유선섭영모식균획득량호적도상질량,경검험량자간무현저성차이(χ2=0.427,P >0.05)。여표준모식상비,제량우선모식섭영 CC 위 AGD 치강저약28.63%,ESE 치강저약28.28%,량자간구유현저성차이(t AGD =12.928,P <0.05,t ESE =8.850,P <0.05)；MLO 위 AGD 치강저약26.33%,ESE 치강저약29.43%,량자간구유현저성차이(t AGD =11.006,P <0.05,t ESE =8.400,P <0.05)。결론재획취동등유선도상질량적정황하,목로쌍파유선 X 사선섭영검사중제량우선모식교표준모식능구유효강저수검자적복사제량。
Objective To investigate the value of the dose mode (giving priority to dose reduction)of molybdenum-rhodium tar-get X-ray photography in mammary gland low-dose examination.Methods Fourty patients with breast cancer were recruited,and their bilateral mammographic images were respectively acquired by the standard modes and the dose modes in both CC and MLO po-sition using molybdenum-rhodium target X-ray machine.The total of 1 60 mammograms were obtained and analyzed in order to as-sess the images quality.The values of average glandular dose (AGD)and entrance skin exposure (ESE)on each patient were detec-ted and recorded respectively.Results The higher quality of images were guaranteed in both the standard modes and the dose modes.There was no significant difference in two mammographic modes (χ2 =0.427,P >0.05).Compared with the standard mode, X-ray exposure such as AGD and ESE values were reduced by 28.63% and 28.28% in CC position,and 26.33% and 29.43% in MLO position respectively for the dose mode.The paired t-test results showed that the differences of radiation exposure in AGD and ESE between the dose mode and the standard mode were all statistically significant (P<0.05 ).Conclusion For the condition of achieving equivalent quality of mammograms,the dose mode may decrease radiation exposure compared to the standard mode in molybdenum-rhodium target mammography.