Optimizing Exposure Parameters in Digital Mammography: A Study in Morocco

Background: Breast cancer is the leading cause of death for women around the world. Screening mammography is the reference examination, due to its sensitivity for detecting small lesions and micro-calcifications. Therefore, it is essential to ensure quality mammographic examinations with the most optimal dose. These conditions depend on the choice of exposure parameters. Clinically, practices must be evaluated in order to determine the most appropriate exposure parameters. Material and Methods: We performed our measurements on a mobile mammography unit (PLANMED Sofie-classic.) in Morocco. A solid dosimeter (AGMS Radcal) and a MTM 100 phantom allow to quantify the delivered dose and the image quality. For image quality assessment, scores are defined by the rate of visible inserts (MTM 100 phantom), obtained and compared for each acquisition. Results: The results show that the parameters of the mammography unit on which we have made our measurements can be improved in order to offer a better compromise between image quality and breast dose. The last one can be reduced up from 13.27% to 22.16%, while preserving comparable image quality.





References:
[1] Épidémiologie des cancers chez les patients de 65 ans et plus : institut national du cancer Date de publication : 27/11/2018 MAROC
[2] laila hallaoui (Cancer: le Maroc enregistre 40.000 nouveaux cas chaque année MAROC HUFFPOST 21/11/2017)
[3] Journée Nationale de Lutte contre le Cancer, volonté collective de combattre ce fléau dévastateur fondation lalla salma de prévention et traitement des cancers
[4] Guide De Détection Précoce Des Cancers Du Sein Et Du Col De L’utérus Edition 2011 ( Ministere de la Sante MAROC)
[5] Plan national de prévention et de contrôle du cancer SYNTHÈSE 2010-2019
[6] Martin J. Yaffe , PhD Risk of Radiation-induced Breast Cancer from Mammographic Screening Radiology: Volume 258: Number 1—January 2011 n radiology.rsna.org
[7] R. Edward Hendrick , PhD;Radiation Doses and Cancer Risks from Breast Imaging Studies, Radiology: Volume 257: Number 1—October 2010 n radiology.rsna.org
[8] Constance D. Lehman, M.D., Ph.D. Screening Women at High Risk for Breast Cancer with Mammography and Magnetic Resonance Imaging, 2005 American Cancer Society DOI 10.1002/cncr.20971Published online 30 March 2005 in Wiley InterScience (www.interscience.wiley.com).
[9] La susceptibilité individuelle aux rayonnements ionisants/ Pr. Michel Bourguignon Commissaire [email protected] & www.asn.fr GT CIPR – 15 Mai 2014
[10] Annette LEXA, Docteur en Toxicologie, nov 2016 Mammographies et radiosensiblité : Cancer Rose, site d'information sur le dépistage du cancer du sein
[11] Dr. Zeina AL KATTAR, Radiation Dose Levels Assessment in Digital Mammography, 2015 International Conference on Advances in Biomedical Engineering (ICABME) ©2015 IEEE
[12] N. Perry, European guidelines for quality assurance in breast cancer screening and diagnosis Four th edition, 2013
[13] A. Noel, use of phantoms and test objects in mammography: standardisation of quality and dose assessment in france. Radiation Protection Dosimetry Vol. 80, Nos 1–3, pp. 77–79 (1998)
[14] Mark B. Williams,a) Priya Raghunathan, and Mitali J. More University of Virginia, Charlottesville, Virginia 22908 Optimization of exposure parameters in full field digital mammography Med Phys. 2008 Jun; 35(6): 2414–2423.
[15] Daniel Bonifacio Monte Carlo simulation of X-ray spectra in diagnostic radiology and mammography using Geant4 research Gate Conference Paper • January 2005
[16] Michael P. Andre; Brett A. Spivey Optimization of tungsten x-ray spectra for digital mammography: a comparison of model to experiment.
[17] publication 103 DE LA CIPR, Recommandations 2007 de la Commission internationale de protection radiologique
[18] Dogan Bor, performance measurements of mammographic systems Radiation Protection Dosimetry (2008), Vol. 129, No. 1–3, pp. 165–169
[19] Young KC1, Oduko JM, Bosmans H, Nijs K, Martinez L. Optimal beam quality selection in digital mammography Br J Radiol. 2006 Dec;79(948):981-90.
[20] Chien-HauChuaMing-ChenYuanaWen-ShengHuangb Dosimetry and kVp standarisation for quality assurance of mammography Bor-TsungHsiehchttps://doi.org/10.1016/j.radphyschem.2013.12.013
[21] Alkhalifah K, Brindabhan A, Alsaeed R effect of exposure factors on image quality in screening mammography Radiography (Lond). 2017 Nov;23(4):e99-e102. doi: 10.1016/j.radi.2017.05.005. Epub 2017 May.