| 马俊丽,范颖,王璇,郑静瑶,王志军,何平.乳腺Combo模式下全视野数字化乳腺摄影及数字乳腺体层合成平均腺体剂量的影响因素[J].中国介入影像与治疗学,2025,22(4):267-272 |
| 乳腺Combo模式下全视野数字化乳腺摄影及数字乳腺体层合成平均腺体剂量的影响因素 |
| Impact factors of average glandular dose of full field digital mammography and digital breast tomosynthesis under breast Combo mode |
| 投稿时间：2025-02-02 修订日期：2025-03-03 |
| DOI：10.13929/j.issn.1672-8475.2025.04.008 |
| 中文关键词: 乳房 乳腺X线摄影 全视野数字化乳腺摄影 辐射剂量 |
| 英文关键词:breast mammography full field digital mammography radiation dosage |
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| 中文摘要: |
| 目的 观察Combo模式下全视野数字乳腺摄影（FFDM）及数字乳腺体层合成（DBT）平均腺体剂量（AGD）的影响因素。方法 回顾性收集接受Combo模式下FFDM及DBT的169人，记录双侧乳腺头足（CC）及内外斜（MLO）位FFDM及DBT曝光时乳腺压迫厚度、管电压、管电流、AGD；比较不同乳腺压迫厚度及乳腺类型之间FFDM或DBT曝光条件及AGD的差异，分析其相关性，观察乳腺压迫厚度及乳腺致密程度对FFDM或DBT AGD的影响。结果 不同乳腺压迫厚度之间FFDM或DBT管电压、管电流、AGD总体差异均有统计学意义（P均＜0.001）。随压迫厚度增加，FFDM或DBT管电压、管电流及AGD均增大（P均＜0.001）。不同乳腺类型之间，FFDM或DBT乳腺压迫厚度、管电压、管电流、AGD总体差异均有统计学意义（P均＜0.001）。压迫厚度分别为＜50 mm、50～59 mm、＞59 mm时，CC或MLO位不同类型乳腺AGDFFDM及AGDDBT差异均有统计学意义（P均＜0.001）。相同压迫厚度下，随乳腺密度增加，FFDM或DBT管电流、AGDFFDM及AGDDBT均增大（P均＜0.001），而FFDM或DBT管电压均无明显改变（P均＞0.05）。乳腺压迫厚度及乳腺密度均为FFDM或DBT AGD的独立影响因素（P均＜0.001）。结论 Combo模式下乳腺压迫厚度及腺体密度均影响FFDM或DBT的AGD，前者影响更为显著。 |
| 英文摘要: |
| Objective To observe impact factors of average glandular dose （AGD） of full field digital mammography （FFDM） and digital breast tomosynthesis （DBT） under breast Combo mode. Methods Totally 169 subjects who received FFDM and DBT under Combo mode were collected retrospectively. The breast compression thickness， tube voltage， tube current and AGD of FFDM and DBT exposure at cranio-caudal （CC） and mediolateral oblique （MLO） positions of bilateral breast were recorded. FFDM or DBT exposure conditions and AGD among different breast compression thickness and breast types were compared， and their correlations were analyzed. The impacts of breast compression thickness and breast density on AGD of FFDM or DBT were observed. Results There were significant differences in tube voltage， tube current and AGD of FFDM or DBT among different breast compression thicknesses （all P＜0.001）. With the increase of breast compression thickness， tube voltage， tube current and AGD of FFDM or DBT all increased （all P＜0.001）. There were statistical differences in breast compression thickness， tube voltage， tube current and AGD of FFDM or DBT among different types breast （all P＜0.001）. Hierarchical analysis showed that， when breast compression thickness was ＜50 mm， 50—59 mm and ＞59 mm respectively， statistical differences in AGDFFDM and AGDDBT among different breast types at CC or MLO positions were found （all P＜0.001）. Under the same breast compression thickness， tube current， AGDFFDM and AGDDBT of FFDM or DBT all increased with the increase of breast density （all P＜0.001）， while tube voltage of FFDM or DBT had no obvious change （all P＞0.05）. Breast compression thickness and breast density were both independent factors of AGD of FFDM or DBT （all P＜0.001）. Conclusion Under breast Combo mode， breast compression thickness and gland density both had impacts on AGD of FFDM or DBT， and the former had more significant impact on AGD. |
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