用于对比增强光谱乳房x线照相术(CESM)图像质量评价的自制假体

V. Ravaglia, S. Farnedi, G. Guerra, N. Scrittori, G. Venturi
{"title":"用于对比增强光谱乳房x线照相术(CESM)图像质量评价的自制假体","authors":"V. Ravaglia, S. Farnedi, G. Guerra, N. Scrittori, G. Venturi","doi":"10.1117/12.2622206","DOIUrl":null,"url":null,"abstract":"The aim of the study is to assess the feasibility of a homemade phantom for image quality evaluation in Contrast Enhanced Spectral Mammography (CESM). The phantom was composed by a PMMA slab with holes of different diameters (10, 5 and 2.5 mm) and thicknesses (5, 4, 3 and 2 mm) filled with diluted iodine contrast medium, resulting in concentrations of 1.9, 1.5, 1.1 and 0.7 mg/cm2 (±0.2 mg/cm2 ), similar to the clinical concentrations. Furthermore, we added tissue-equivalent slabs with anatomical background and we simulated 3 different configurations equivalent to 32, 60 and 90 mm breast thicknesses. Image acquisitions were performed on a Hologic 3Dimensions mammography system using AEC clinical parameters. The acquisitions included a low energy exposure followed by an high energy one, and the resulting processed images were a subtraction of the 2 acquired images. For each configuration, the CNR on the low, high and subtracted images were calculated. The results showed that CNR values measured on the processed subtracted images were much higher respect to the CNR measured on the “for processing” low and high energy images. Furthermore, as expected, an increase in CNR for increasing iodine concentration was verified on the processed images, but not always on raw images that contained anatomical background. Preliminary results showed that the phantom is suitable for image quality evaluation in CESM but further studies with different acquisition parameters and on different mammography systems are necessary to assess the repeatability and the consistency of the measurements.","PeriodicalId":92005,"journal":{"name":"Breast imaging : 11th International Workshop, IWDM 2012, Philadelphia, PA, USA, July 8-11, 2012 : proceedings. International Workshop on Breast Imaging (11th : 2012 : Philadelphia, Pa.)","volume":"17 1","pages":"122860I - 122860I-6"},"PeriodicalIF":0.0000,"publicationDate":"2022-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"A homemade phantom for image quality evaluation in contrast enhanced spectral mammography (CESM)\",\"authors\":\"V. Ravaglia, S. Farnedi, G. Guerra, N. Scrittori, G. Venturi\",\"doi\":\"10.1117/12.2622206\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The aim of the study is to assess the feasibility of a homemade phantom for image quality evaluation in Contrast Enhanced Spectral Mammography (CESM). The phantom was composed by a PMMA slab with holes of different diameters (10, 5 and 2.5 mm) and thicknesses (5, 4, 3 and 2 mm) filled with diluted iodine contrast medium, resulting in concentrations of 1.9, 1.5, 1.1 and 0.7 mg/cm2 (±0.2 mg/cm2 ), similar to the clinical concentrations. Furthermore, we added tissue-equivalent slabs with anatomical background and we simulated 3 different configurations equivalent to 32, 60 and 90 mm breast thicknesses. Image acquisitions were performed on a Hologic 3Dimensions mammography system using AEC clinical parameters. The acquisitions included a low energy exposure followed by an high energy one, and the resulting processed images were a subtraction of the 2 acquired images. For each configuration, the CNR on the low, high and subtracted images were calculated. The results showed that CNR values measured on the processed subtracted images were much higher respect to the CNR measured on the “for processing” low and high energy images. Furthermore, as expected, an increase in CNR for increasing iodine concentration was verified on the processed images, but not always on raw images that contained anatomical background. Preliminary results showed that the phantom is suitable for image quality evaluation in CESM but further studies with different acquisition parameters and on different mammography systems are necessary to assess the repeatability and the consistency of the measurements.\",\"PeriodicalId\":92005,\"journal\":{\"name\":\"Breast imaging : 11th International Workshop, IWDM 2012, Philadelphia, PA, USA, July 8-11, 2012 : proceedings. International Workshop on Breast Imaging (11th : 2012 : Philadelphia, Pa.)\",\"volume\":\"17 1\",\"pages\":\"122860I - 122860I-6\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-07-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Breast imaging : 11th International Workshop, IWDM 2012, Philadelphia, PA, USA, July 8-11, 2012 : proceedings. International Workshop on Breast Imaging (11th : 2012 : Philadelphia, Pa.)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1117/12.2622206\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Breast imaging : 11th International Workshop, IWDM 2012, Philadelphia, PA, USA, July 8-11, 2012 : proceedings. International Workshop on Breast Imaging (11th : 2012 : Philadelphia, Pa.)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1117/12.2622206","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1

摘要

本研究的目的是评估在对比增强光谱乳房x线摄影(CESM)中用于图像质量评估的自制假体的可行性。幻影由直径(10、5和2.5 mm)、厚度(5、4、3和2 mm)不同孔的PMMA板组成,填充稀释的碘造影剂,浓度分别为1.9、1.5、1.1和0.7 mg/cm2(±0.2 mg/cm2),与临床浓度相近。此外,我们添加了具有解剖学背景的组织等效板,并模拟了相当于32、60和90 mm乳房厚度的3种不同配置。使用AEC临床参数在Hologic 3Dimensions乳房x线摄影系统上进行图像采集。采集的图像包括低能量曝光和高能量曝光,处理后的图像是两张采集图像的相减。对于每种配置,分别计算低、高、减幅图像上的CNR。结果表明,处理后的减能图像的CNR值远高于“待处理”低能和高能图像的CNR值。此外,正如预期的那样,在处理后的图像上证实了碘浓度增加的CNR增加,但并不总是在包含解剖背景的原始图像上。初步结果表明,该模型适用于CESM的图像质量评估,但需要在不同的采集参数和不同的乳房x线摄影系统上进行进一步的研究,以评估测量的重复性和一致性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A homemade phantom for image quality evaluation in contrast enhanced spectral mammography (CESM)
The aim of the study is to assess the feasibility of a homemade phantom for image quality evaluation in Contrast Enhanced Spectral Mammography (CESM). The phantom was composed by a PMMA slab with holes of different diameters (10, 5 and 2.5 mm) and thicknesses (5, 4, 3 and 2 mm) filled with diluted iodine contrast medium, resulting in concentrations of 1.9, 1.5, 1.1 and 0.7 mg/cm2 (±0.2 mg/cm2 ), similar to the clinical concentrations. Furthermore, we added tissue-equivalent slabs with anatomical background and we simulated 3 different configurations equivalent to 32, 60 and 90 mm breast thicknesses. Image acquisitions were performed on a Hologic 3Dimensions mammography system using AEC clinical parameters. The acquisitions included a low energy exposure followed by an high energy one, and the resulting processed images were a subtraction of the 2 acquired images. For each configuration, the CNR on the low, high and subtracted images were calculated. The results showed that CNR values measured on the processed subtracted images were much higher respect to the CNR measured on the “for processing” low and high energy images. Furthermore, as expected, an increase in CNR for increasing iodine concentration was verified on the processed images, but not always on raw images that contained anatomical background. Preliminary results showed that the phantom is suitable for image quality evaluation in CESM but further studies with different acquisition parameters and on different mammography systems are necessary to assess the repeatability and the consistency of the measurements.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信