数字乳腺断层摄影中乳腺分型和厚度与腺体剂量的关系

发布时间：2018-02-24 01:02

本文关键词： 数字乳腺断层摄影乳腺分型腺体剂量　出处：《广东医学》2015年19期 　论文类型：期刊论文

【摘要】：目的探讨数字乳腺断层摄影(DBT)下不同乳腺分型、不同乳腺厚度与腺体剂量之间的关系,并比较DBT与全视野数字乳腺X线摄影(FFDM)的腺体剂量。方法对520例患者在同一压迫状态下,先进行DBT,再进行FFDM,选用自动曝光模式进行曝光。比较相同厚度水平下,DBT下4种不同乳腺分型的腺体剂量,以及比较同一压迫状态下DBT与FFDM的腺体剂量。结果 520例中脂肪型4例,少量腺体型96例,多量腺体型308例,致密型112例;在同一乳腺厚度FFDM及DBT均以致密型乳腺的腺体剂量最高,多量腺体次之,少量腺体型及脂肪型最少。同一压迫状态下FFDM腺体剂量(1.50±0.40)m Gy,DBT腺体剂量(1.66±0.24)m Gy,差异有统计学意义(P0.01)。结论 DBT与FFDM的腺体剂量均随着乳腺厚度及密度的增加而升高,同一压迫状态下DBT腺体剂量大于FFDM。
[Abstract]:Objective to study the relationship between different breast types, different breast thickness and glandular dose under digital mammography (DBT), and to compare the glandular dose of DBT with full field digital mammography (FFDM). DBT was performed first, then FFDM, and auto exposure mode was selected. The glandular dosages of DBT and FFDM under the same compression state were compared. Results there were 4 cases of fat type, 96 cases of small glandular type, 308 cases of multiple glandular type and 112 cases of dense type. In the same thickness of mammary gland, FFDM and DBT were the highest in dense mammary gland, followed by multi-volume gland. Under the same compression condition, the glandular dose of FFDM was 1.50 卤0.40 mGy, the difference was statistically significant (P 0.01). Conclusion the glandular dose of DBT and FFDM increases with the increase of breast thickness and density. The glandular dose of DBT was higher than that of FFDM in the same compression state.
【作者单位】：南方医科大学南方医院放射科;
【基金】：广东省科技计划项目(编号:2012A032200011) 南方医科大学南方医院院长基金资助项目(编号:2014C019)
【分类号】：R737.9;R730.44

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