【摘要】 目的调查河北省内部分医院乳腺X线机受检者腺体平均剂量水平,比较普通增感屏/胶片机,计算机X线摄影(CR),数字放射线摄影(DR)及不同压迫厚度乳腺腺体平均剂量水平的差异。方法乳腺腺体平均剂量测量采用Victoreen NEROTM mAx系统主机(美国CardinalHealth公司)及Victoreen 6000-529乳腺电离室(美国FLUKE公司)。结果 3种乳腺X线机在实际诊断工作中,钼靶屏/片机剂量平均值为(0.74±0.23)mGy,CR与DR剂量平均值分别为(1.60±1.02)与(1.69±0.80)mGy,受检者腺体平均剂量水平钼靶屏/片机低于CR及DR,其差异有统计学意义(P<0.05)。对CR与DR受检者腺体平均剂量进行z检验,P值为0.35,差异无统计学意义。随着乳房压迫厚度的增加,腺体平均剂量水平有所增加,但差异无统计学意义(P>0.05)。结论在医师操作熟练、设备保养得当的情况下,乳腺X线钼靶屏/片机可以满足一般患者诊断要求,中小型医院或经济欠发达地区医院可以使用钼靶屏/片X线机进行乳腺疾病检查诊断。更多还原

【Abstract】 [Objective]To investigate the average glandular dose levels of X-ray mammography subjects in some hospitals of Hebei Province,and compare the differences of average glandular dose levels between general intensifying screen / film machine,computerized X-ray radiography(CR),digital mammography(DR) and the thickness of the different oppression mammary gland. [Methods]The mammary gland mean dose was measured by using the victoreen NEROTM mAs system host(Cardinal Health) and Victoreen 6000-529 breast ionization chamber(FLUKE).[Results]During actual diagnosis process,the average dose level of mammography screen / film machine was(0. 74 ± 0. 23) mGy,that of CR and DR was(1. 60 ± 1. 02) mGy and(1. 69 ± 0. 80) mGy,respectively. The average glandular dose levels of subjects was significantly different between mammography screen / film machine,CR and DR(P <0.05). The z-test showed average glandular dose of CR and DR subjects P =0.35,without significant differences. With the increase in the thickness of breast compression,the average glandular dose level increased,but the difference was not statistically significant(P >0.05).[Conclusion]In the case of the operation of skilled physicians and maintenance of equipment properly,breast X-ray mammography screen / film machine meets the general patient diagnostic requirements,small and medium-sized hospital or the hospital in economically underdeveloped areas can use mammography screen / film X-ray machine for breast disease diagnosis.更多还原