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Avramova-Cholakova S, Kulama E, Daskalov S, Loveland J. PERFORMANCE COMPARISON OF SYSTEMS WITH FULL-FIELD DIGITAL MAMMOGRAPHY, DIGITAL BREAST TOMOSYNTHESIS AND CONTRAST-ENHANCED SPECTRAL MAMMOGRAPHY. RADIATION PROTECTION DOSIMETRY 2021; 197:212-229. [PMID: 34977945 DOI: 10.1093/rpd/ncab172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/12/2021] [Accepted: 11/16/2021] [Indexed: 06/14/2023]
Abstract
The purpose is to compare full-field digital mammography (FFDM), digital breast tomosynthesis (DBT) and contrast-enhanced spectral mammography (CESM) technologies on three mammography systems in terms of image quality and patient dose. Two Senographe Essential with DBT and CESM (denoted S1 and S2) and one Selenia Dimensions (S3) with FFDM and DBT were considered. Dosimetry methods recommended in the European protocol were used. Image quality was tested with CDMAM in FFDM and DBT and with ideal observer method in FFDM. Mean values of mean glandular dose (MGD) from whole patient samples on S1, S2 and S3 were as follows: FFDM 1.65, 1.84 and 2.23 mGy; DBT 2.03, 1.96 and 2.87 mGy; CESM 2.65 and 3.16 mGy, respectively. S3 exhibited better low-contrast detectability for the smallest sized discs of CDMAM and ideal observer in FFDM, and for the largest sized discs in DBT, at similar dose levels.
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Glandular dose indices using a glandular dose to air kerma volume histogram in mammography. Med Phys 2020; 47:1340-1348. [DOI: 10.1002/mp.13981] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 11/19/2019] [Accepted: 12/13/2019] [Indexed: 01/25/2023] Open
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Suleiman ME, Brennan PC, Ekpo E, Kench P, McEntee MF. Integrating mammographic breast density in glandular dose calculation. Br J Radiol 2018; 91:20180032. [PMID: 29400552 PMCID: PMC6190790 DOI: 10.1259/bjr.20180032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 01/30/2018] [Accepted: 01/31/2018] [Indexed: 01/04/2023] Open
Abstract
OBJECTIVE This work proposes the use of mammographic breast density (MBD) to estimate actual glandular dose (AGD), and assesses how AGD compares to mean glandular dose (MGD) estimated using Dance et al method. METHODS A retrospective sample of anonymised mammograms (52,405) was retrieved from a central database. Technical parameters and patient characteristics were exported from the Digital Imaging and Communication in Medicine (DICOM) header using third party software. LIBRA (Laboratory for Individualized Breast Radiodensity Assessment) software package (University of Pennsylvania, Philadelphia, USA) was used to estimate MBDs for each mammogram included in the data set. MGD was estimated using Dance et al method, while AGD was calculated by replacing Dance et al standard glandularities with LIBRA estimated MBDs. A linear regression analysis was used to assess the association between MGD and AGD, and a Bland-Altman analysis was performed to assess their mean difference. RESULTS The final data set included 31,097 mammograms from 7728 females. MGD, AGD, and MBD medians were 1.53 , 1.62 mGy and 8% respectively. When stratified per breast thickness ranges, median MBDs were lower than Dance's standard glandularities. There was a strong positive correlation (R2 = 0.987, p < 0.0001) between MGD and AGD although the Bland-Altman analysis revealed a small statistically significant bias of 0.087 mGy between MGD and AGD (p < 0.001). CONCLUSION AGD estimated from MBD is highly correlated to MGD from Dance method, albeit the Dance method underestimates dose at smaller CBTs. Advances in knowledge: Our work should provide a stepping-stone towards an individualised dose estimation using automated clinical measures of MBD.
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Affiliation(s)
- Moayyad E Suleiman
- Medical Radiation Sciences, The University of Sydney, Faculty of Health Sciences. Cumberland Campus, Lidcombe, NSW, Australia
| | - Patrick C Brennan
- Medical Radiation Sciences, The University of Sydney, Faculty of Health Sciences. Cumberland Campus, Lidcombe, NSW, Australia
| | - Ernest Ekpo
- Medical Radiation Sciences, The University of Sydney, Faculty of Health Sciences. Cumberland Campus, Lidcombe, NSW, Australia
| | - Peter Kench
- Medical Radiation Sciences, The University of Sydney, Faculty of Health Sciences. Cumberland Campus, Lidcombe, NSW, Australia
| | - Mark F McEntee
- Medical Radiation Sciences, The University of Sydney, Faculty of Health Sciences. Cumberland Campus, Lidcombe, NSW, Australia
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Seifert H, Siebenhüner A. [Not Available]. PRAXIS 2017; 106:745-752. [PMID: 28677487 DOI: 10.1024/1661-8157/a002733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Zusammenfassung. Zusammenfassung: Das Mammakarzinom ist die häufigste Tumorerkrankung der Frau und immer noch die häufigste tumorbedingte Todesursache. Strukturierte Früherkennungsuntersuchungen sollen die Krebsmortalität senken. Die Karzinomvorsorge der Frau, insbesondere ausgerichtet auf den Brustkrebs, ist in der Schweiz auf kantonaler Ebene und bis anhin nicht flächendeckend reguliert. In den internationalen Guidelines (S3, ESMO, NCCN) ist eine Screening-Untersuchung mittels Mammografie alle zwei Jahre (während zwanzig Jahren) in der Altersgruppe 50–69 Jahre empfohlen. Einige internationale Studien wiesen eine relative Reduktion der Gesamtmortalität von 25–45 % durch das Screening und durch eine Behandlung von Brustkrebs im Frühstadium auf. Das folgende CME gibt einen Überblick über den aktuellen Stand des Mammografie-Screenings und diskutiert Vor- und Nachteile von möglichen diagnostischen und therapeutischen Schritten.
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Affiliation(s)
- Heike Seifert
- 1 Zentrum für Hämatologie und Onkologie, Klinik für Onkologie, Universitätsspital Zürich
| | - Alexander Siebenhüner
- 1 Zentrum für Hämatologie und Onkologie, Klinik für Onkologie, Universitätsspital Zürich
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Preliminary results of a new approach for three-dimensional reconstruction of Dynamic AngioThermography (DATG) images based on the inversion of heat equation. Phys Med 2016; 32:1052-64. [PMID: 27618585 DOI: 10.1016/j.ejmp.2016.07.637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 07/29/2016] [Accepted: 07/30/2016] [Indexed: 11/23/2022] Open
Abstract
Dynamic AngioThermography (DATG) is a contact-plate technique capable of producing a digital representation of breast vascularity. The inception and growth of a tumor are associated with neoangenesis, which may result in a demonstrable alteration in the regional blood flow, while in normal health conditions the vascularity remains unchanged throughout life. DATG, if included in the clinical evaluation for breast cancer, could potentially improve the accuracy of the diagnosis of this disease. Conventional DATG is limited, however, in that it is a projection (i.e. two-dimensional) imaging technique that does not provide any information on the depth and its effect on the pattern of the perfusion revealed by this technique. In fact, the blood pattern is detected by projecting temperature signals on the plate, thus acquiring a digital two-dimensional image. In this article we propose a new approach for extracting information on depth through the inversion of the Fourier heat equation. The idea is to extract the information along the third axis while acquiring and analyzing the temporal sequence during the process of image formation. The method implemented has been tested on a dedicated "electric phantom" and in one in vivo experiment. In spite of the limits of these preliminary tests, the experimental results have shown that this method makes it possible to obtain a 3D representation of the vascularity. Although it appears to be promising, further validation and characterization of our technique are required.
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Hamashima C, Hamashima C C, Hattori M, Honjo S, Kasahara Y, Katayama T, Nakai M, Nakayama T, Morita T, Ohta K, Ohnuki K, Sagawa M, Saito H, Sasaki S, Shimada T, Sobue T, Suto A. The Japanese Guidelines for Breast Cancer Screening. Jpn J Clin Oncol 2016; 46:482-492. [PMID: 27207993 DOI: 10.1093/jjco/hyw008] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023] Open
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Lee EH, Park B, Kim NS, Seo HJ, Ko KL, Min JW, Shin MH, Lee K, Lee S, Choi N, Hur MH, Kim DI, Kim MJ, Kim SY, Sunwoo S, Dang JY, Kim SY, Kim Y, Lee WC, Jeong J. The Korean guideline for breast cancer screening. JOURNAL OF THE KOREAN MEDICAL ASSOCIATION 2015. [DOI: 10.5124/jkma.2015.58.5.408] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Eun Hye Lee
- Department of Radiology, Bucheon Hospital, Soonchunhyang University College of Medicine, Bucheon, Korea
| | - Boyoung Park
- Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
| | - Nam-Soon Kim
- Health Policy Research Department, Korea Institute for Health and Social Affairs, Sejong, Korea
| | - Hyun-Ju Seo
- Department of Nursing, College of Medicine, Chosun University, Gwangju, Korea
| | - Kyoung Lan Ko
- Department of Radiology, Center for Breast Cancer, National Cancer Center, Goyang, Korea
| | - Jun Won Min
- Department of Surgery, Dankook University College of Medicine, Cheonan, Korea
| | - Myung-Hee Shin
- Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, Suwon, Korea
| | - Kiheon Lee
- Department of Family Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Seeyoun Lee
- Department of Surgery, Center for Breast Cancer, National Cancer Center, Goyang, Korea
| | - Nami Choi
- Department of Radiology, Konkuk University Medical Center, Konkuk University College of Medicine, Seoul, Korea
| | - Min Hee Hur
- Department of Surgery, Cheil General Hospital & Women's Healthcare Center, Dankook Universitiy College of Medicine, Seoul, Korea
| | - Dong Il Kim
- Department of Environmental and Occupational Medicine, Myongji Hospital, Seonam University College of Medicine, Goyang, Korea
| | - Min Jung Kim
- Department of Radiology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sung Yong Kim
- Department of Surgery, Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Sung Sunwoo
- Department of Family Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Ji Yeon Dang
- National Cancer Control Institute, National Cancer Center, Goyang, Korea
| | - Soo Young Kim
- Department of Family Medicine, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Yeol Kim
- National Cancer Control Institute, National Cancer Center, Goyang, Korea
| | - Won-Chul Lee
- Department of Preventive Medicine, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Joon Jeong
- Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Razmilic Valdés D. Revisión de la literatura para el uso de la mamografía (Mx) en tamizaje de cáncer de mama. Medwave 2010. [DOI: 10.5867/medwave.2010.01.4295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Intra-individual comparison of average glandular dose of two digital mammography units using different anode/filter combinations. Acad Radiol 2009; 16:1272-80. [PMID: 19632866 DOI: 10.1016/j.acra.2009.05.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Revised: 05/11/2009] [Accepted: 05/25/2009] [Indexed: 11/24/2022]
Abstract
RATIONALE AND OBJECTIVES The aim of this study was to compare average glandular dose (AGD) in two full-field digital mammography units using different anode/filter combinations. MATERIALS AND METHODS Mammographies of 50 consecutive patients on a mammography system using a tungsten/rhodium (W/Rh) anode/filter combination were retrospectively compared to prior examinations on a different mammography unit using combinations of Molybdenum (Mo) and Rhodium (Rh). To exclude effects of increasing patient age, two prior examinations within 5 years were used. Both views of one breast were chosen for analysis. AGD was recorded as stated by each mammography unit. Accuracy of stated AGD and contrast-detail resolution were assessed using different breast phantoms. RESULTS The mean AGDs from the examinations using W/Rh were 0.95 mGy and 1.01 mGy for craniocaudal (CC) and mediolateral oblique (MLO) views compared to 1.51 mGy and 1.54 mGy, respectively, using combinations of Mo and Rh (P < .001). Relative reduction of AGD was independent of breast thickness but decreased with increasing breast density (partial correlation coefficient of 0.46, P < .005 and 0.57, P < .001, for CC and MLO views, respectively). Low-level contrast resolution was equal in both units using standard acquisition parameters. CONCLUSION In clinical mammographies, higher energy beam spectra obtained using W/Rh anode/filter combinations may significantly contribute to lowering AGD compared to Mo/Mo, Mo/Rh, and Rh/Rh in breasts that are not extremely dense.
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Ma AKW, Darambara DG, Stewart A, Gunn S, Bullard E. Mean glandular dose estimation using MCNPX for a digital breast tomosynthesis system with tungsten/aluminum and tungsten/aluminum+silver x-ray anode-filter combinations. Med Phys 2009; 35:5278-89. [PMID: 19175087 DOI: 10.1118/1.3002310] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Breast cancer screening with x-ray mammography, using one or two projection images of the breast, is an indispensible tool in the early detection of breast cancer in women. Digital breast tomosynthesis (DBT) is a 3D imaging technique that promises higher sensitivity and specificity in breast cancer screening at a similar radiation dose to conventional two-view screening mammography. In DBT a 3D volume is reconstructed with anisotropic voxels from a limited number of x-ray projection images acquired over a limited angle. Although the benefit of early cancer detection through screening mammography outweighs the potential risks associated with radiation, the radiation dosage to women in terms of mean glandular dose (MGD) is carefully monitored. This work studies the MGD arising from a prototype DBT system under various parameters. Two anode/filter combinations (W/Al and W/Al+Ag) were investigated; the tube potential ranges from 20 to 50 kVp; and the breast size varied between 4 and 10 cm chest wall-to-nipple distance and between 3 and 7 cm compressed breast thickness. The dosimetric effect of breast positioning with respect to the imaging detector was also reviewed. It was found that the position of the breast can affect the MGD by as much as 5% to 13% depending on the breast size.
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Affiliation(s)
- Andy K W Ma
- Joint Department of Physics, The Institute of Cancer Research and The Royal Marsden Hospital, London, United Kingdom.
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Stout NK, Knudsen AB, Kong CY, McMahon PM, Gazelle GS. Calibration methods used in cancer simulation models and suggested reporting guidelines. PHARMACOECONOMICS 2009; 27:533-45. [PMID: 19663525 PMCID: PMC2787446 DOI: 10.2165/11314830-000000000-00000] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Increasingly, computer simulation models are used for economic and policy evaluation in cancer prevention and control. A model's predictions of key outcomes, such as screening effectiveness, depend on the values of unobservable natural history parameters. Calibration is the process of determining the values of unobservable parameters by constraining model output to replicate observed data. Because there are many approaches for model calibration and little consensus on best practices, we surveyed the literature to catalogue the use and reporting of these methods in cancer simulation models. We conducted a MEDLINE search (1980 through 2006) for articles on cancer-screening models and supplemented search results with articles from our personal reference databases. For each article, two authors independently abstracted pre-determined items using a standard form. Data items included cancer site, model type, methods used for determination of unobservable parameter values and description of any calibration protocol. All authors reached consensus on items of disagreement. Reviews and non-cancer models were excluded. Articles describing analytical models, which estimate parameters with statistical approaches (e.g. maximum likelihood) were catalogued separately. Models that included unobservable parameters were analysed and classified by whether calibration methods were reported and if so, the methods used. The review process yielded 154 articles that met our inclusion criteria and, of these, we concluded that 131 may have used calibration methods to determine model parameters. Although the term 'calibration' was not always used, descriptions of calibration or 'model fitting' were found in 50% (n = 66) of the articles, with an additional 16% (n = 21) providing a reference to methods. Calibration target data were identified in nearly all of these articles. Other methodological details, such as the goodness-of-fit metric, were discussed in 54% (n = 47 of 87) of the articles reporting calibration methods, while few details were provided on the algorithms used to search the parameter space. Our review shows that the use of cancer simulation modelling is increasing, although thorough descriptions of calibration procedures are rare in the published literature for these models. Calibration is a key component of model development and is central to the validity and credibility of subsequent analyses and inferences drawn from model predictions. To aid peer-review and facilitate discussion of modelling methods, we propose a standardized Calibration Reporting Checklist for model documentation.
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Affiliation(s)
- Natasha K Stout
- Department of Ambulatory Care and Prevention, Harvard Medical School/Harvard Pilgrim Health Care, Boston, Massachusetts 02215, USA.
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Trigoni M, Griffiths F, Tsiftsis D, Koumantakis E, Green E, Lionis C. Mammography screening: views from women and primary care physicians in Crete. BMC WOMENS HEALTH 2008; 8:20. [PMID: 18990253 PMCID: PMC2588567 DOI: 10.1186/1472-6874-8-20] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/07/2007] [Accepted: 11/07/2008] [Indexed: 11/25/2022]
Abstract
Background Breast cancer is the most commonly diagnosed cancer among women and a leading cause of death from cancer in women in Europe. Although breast cancer incidence is on the rise worldwide, breast cancer mortality over the past 25 years has been stable or decreasing in some countries and a fall in breast cancer mortality rates in most European countries in the 1990s was reported by several studies, in contrast, in Greece have not reported these favourable trends. In Greece, the age-standardised incidence and mortality rate for breast cancer per 100.000 in 2006 was 81,8 and 21,7 and although it is lower than most other countries in Europe, the fall in breast cancer mortality that observed has not been as great as in other European countries. There is no national strategy for screening in this country. This study reports on the use of mammography among middle-aged women in rural Crete and investigates barriers to mammography screening encountered by women and their primary care physicians. Methods Design: Semi-structured individual interviews. Setting and participants: Thirty women between 45–65 years of age, with a mean age of 54,6 years, and standard deviation 6,8 from rural areas of Crete and 28 qualified primary care physicians, with a mean age of 44,7 years and standard deviation 7,0 serving this rural population. Main outcome measure: Qualitative thematic analysis. Results Most women identified several reasons for not using mammography. These included poor knowledge of the benefits and indications for mammography screening, fear of pain during the procedure, fear of a serious diagnosis, embarrassment, stress while anticipating the results, cost and lack of physician recommendation. Physicians identified difficulties in scheduling an appointment as one reason women did not use mammography and both women and physicians identified distance from the screening site, transportation problems and the absence of symptoms as reasons for non-use. Conclusion Women are inhibited from participating in mammography screening in rural Crete. The provision of more accessible screening services may improve this. However physician recommendation is important in overcoming women's inhibitions. Primary care physicians serving rural areas need to be aware of barriers preventing women from attending mammography screening and provide women with information and advice in a sensitive way so women can make informed decisions regarding breast caner screening.
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Affiliation(s)
- Maria Trigoni
- University of Crete, Head of Department of Social Work, University Hospital of Heraklion, Crete, Greece.
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Detection of incidental breast tumors by noncontrast spiral computed tomography of the chest. ACTA ACUST UNITED AC 2008; 26:362-7. [PMID: 18677611 DOI: 10.1007/s11604-008-0241-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2007] [Accepted: 03/14/2008] [Indexed: 10/21/2022]
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Michaelson JS. Mammographic Screening. Cancer Imaging 2008. [DOI: 10.1016/b978-012374212-4.50052-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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