一项多中心研究，比较数字乳房x线照相术、数字乳房断层合成术和增强乳房x线照相术以前和新的乳房剂量测定

IF 2.7 3区医学 Q1 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Physica Medica-European Journal of Medical Physics Pub Date : 2025-09-19 DOI:10.1016/j.ejmp.2025.105171

Laura Soprani , Valentina Ravaglia , Sara Dalmonte , Lidia Angelini , Chiara Bassetti , Camilla Scabbio , Nicoletta Paruccini , Raffaele Villa , Paolo De Marco , Daniela Origgi , Sabina Strocchi , Eleonora Bortoli , Michelangelo Biondi , Maria Cristina Cimmino , Massimiliano Porzio , Noemi Cucurachi , Martina Iacco , Massimiliano Paolucci , Rossana Bona , Maria Chiara Angiocchi , Anna Sardo

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引用次数: 0

摘要

目的：欧洲最广泛使用的乳房x光检查剂量评估方法是基于Dance的出版物。最近，AAPM和EFOMP联合任务小组282 （TG282）发布了一种新的乳腺剂量学模型，提高了平均腺剂量（AGD）估计的准确性。这项多中心研究旨在评估不同模式和乳房x光检查系统中传统剂量法和新剂量法在AGD方面的差异。方法对安装在意大利各地医院的6家供应商的74台乳房x光检查系统进行测量。每个设施使用自己的设备，同时遵守相同的协议和电子表格。在数字乳房x线摄影（DM）、数字乳房断层合成（DBT）和对比增强乳房x线摄影（CEM）两种配置下测量导管输出和半值层（HVL）。使用不同厚度的乳房状PMMA假体进行暴露。集中收集数据，使用适当的校正因子计算常规剂量学的AGD，使用EU遗留模型计算TG282剂量学的BreastAGD282软件。结果该样本可以识别两种方法的典型AGD值。该研究强调，与所有模式和供应商的Dance方法相比，新剂量学模型降低了中位AGD。此外，减少幅度取决于x射线束质量、方式和压缩乳房厚度，在21 mm时为6.1 - 8.4%，在90 mm时为27.3 - 38.3%。结论新的TG282剂量学模型显示估计的中位AGD降低。值得注意的是，这种减少的幅度取决于x射线束质量，模态和压缩乳房厚度。

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A multicentre study to compare previous and new breast dosimetry for Digital Mammography, Digital Breast Tomosynthesis and Contrast Enhanced Mammography

Purpose

The most widely used method in Europe to estimate breast dosimetry in mammography is based on Dance’s publications. Recently, AAPM and EFOMP joint Task Group 282 (TG282) has published a new breast dosimetry model, which improves the accuracy in Average Glandular Dose (AGD) estimation. This multicentre study aims to evaluate variations in AGD between conventional and new dosimetry across different modalities and mammography systems.

Methods

Measurements were conducted on 74 mammography systems from six vendors, installed in hospitals across Italy. Each facility used its own equipment while adhering to the same protocol and spreadsheets. Tube output and Half-Value Layer (HVL) were measured in the two configurations for Digital Mammography (DM), Digital Breast Tomosynthesis (DBT), and Contrast-Enhanced Mammography (CEM). Exposures were performed using a breast-shaped PMMA phantom of different thicknesses. Data were centrally collected to compute AGD using appropriate correction factors for conventional dosimetry and the BreastAGD282 software for TG282 dosimetry, using EU legacy model.

Results

The sample allows for the identification of typical AGD values for both methodologies. The study highlights a reduction in median AGD with the new dosimetry model compared to Dance method across all modalities and vendors. Furthermore, the reduction magnitude depends on x-ray beam quality, modality and compressed breast thickness, ranging from 6.1–8.4 % at 21 mm to 27.3–38.3 % at 90 mm.

Conclusions

The new TG282 dosimetry model showed a reduction in the estimated median AGD. Notably, the magnitude of this reduction depended on x-ray beam quality, modality and compressed breast thickness.

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来源期刊

Physica Medica-European Journal of Medical Physics 生物-生物物理

CiteScore

6.80

自引率

14.70%

发文量

493

审稿时长

78 days

期刊介绍： Physica Medica, European Journal of Medical Physics, publishing with Elsevier from 2007, provides an international forum for research and reviews on the following main topics: Medical Imaging Radiation Therapy Radiation Protection Measuring Systems and Signal Processing Education and training in Medical Physics Professional issues in Medical Physics.