keyword
MENU ▼
Read by QxMD icon Read
search

Digital mammography

keyword
https://www.readbyqxmd.com/read/28624977/interaction-of-mammographic-breast-density-with-menopausal-status-and-postmenopausal-hormone-use-in-relation-to-the-risk-of-aggressive-breast-cancer-subtypes
#1
Lusine Yaghjyan, Rulla M Tamimi, Kimberly A Bertrand, Christopher G Scott, Matthew R Jensen, V Shane Pankratz, Kathy Brandt, Daniel Visscher, Aaron Norman, Fergus Couch, John Shepherd, Bo Fan, Yunn-Yi Chen, Lin Ma, Andrew H Beck, Steven R Cummings, Karla Kerlikowske, Celine M Vachon
PURPOSE: We examined the associations of mammographic breast density with breast cancer risk by tumor aggressiveness and by menopausal status and current postmenopausal hormone therapy. METHODS: This study included 2596 invasive breast cancer cases and 4059 controls selected from participants of four nested case-control studies within four established cohorts: the Mayo Mammography Health Study, the Nurses' Health Study, Nurses' Health Study II, and San Francisco Mammography Registry...
June 17, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28614990/screening-organization-and-recall-rate-in-a-regional-breast-screening-programme
#2
Tina Beruchashwili, Rema Gvamichava, Stephen W Duffy
Objective To use results on recall rates from a regional non-population-based breast screening programme to inform practice in a planned national population-based programme. Methods We analysed data on rates of recall for further assessment in 27,327 mammographic screening episodes in 2015-2016 in the breast screening programme in the city of Tbilisi, Georgia. Screening was done by two-view digital mammography with double reading in women aged 40-70, and further assessment took place at the same clinic and during the same visit as the initial screening mammogram...
January 1, 2017: Journal of Medical Screening
https://www.readbyqxmd.com/read/28609204/surveillance-of-women-with-the-brca1-or-brca2-mutation-by-using-biannual-automated-breast-us-mr-imaging-and-mammography
#3
Jan C M van Zelst, Roel D M Mus, Gwendolyn Woldringh, Matthieu J C M Rutten, Peter Bult, Suzan Vreemann, Mathijn de Jong, Nico Karssemeijer, Nicoline Hoogerbrugge, Ritse M Mann
Purpose To evaluate a multimodal surveillance regimen including yearly full-field digital (FFD) mammography, dynamic contrast agent-enhanced (DCE) magnetic resonance (MR) imaging, and biannual automated breast (AB) ultrasonography (US) in women with BRCA1 and BRCA2 mutations. Materials and Methods This prospective multicenter trial enrolled 296 carriers of the BRCA mutation (153 BRCA1 and 128 BRCA2 carriers, and 15 women with first-degree untested relatives) between September 2010 and November 2012, with follow-up until November 2015...
June 13, 2017: Radiology
https://www.readbyqxmd.com/read/28603939/mesh-free-based-variational-level-set-evolution-for-breast-region-segmentation-and-abnormality-detection-using-mammograms
#4
Kanchan L Kashyap, Manish K Bajpai, Pritee Khanna, George Giakos
Automatic segmentation of abnormal region is a crucial task in computer aided detection system using mammograms. In this work an automatic abnormality detection algorithm using mammographic images is proposed. In the preprocessing step, partial differential equation based variational level set method is employed for breast region extraction. The evolution of the level set method is done by applying mesh-free based radial basis function. The limitation of mesh-based approach is removed by using mesh-free based RBF method...
June 11, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/28583146/the-effect-of-volumetric-breast-density-on-the-risk-of-screen-detected-and-interval-breast-cancers-a-cohort-study
#5
Johanna O P Wanders, Katharina Holland, Nico Karssemeijer, Petra H M Peeters, Wouter B Veldhuis, Ritse M Mann, Carla H van Gils
BACKGROUND: In the light of the breast density legislation in the USA, it is important to know a woman's breast cancer risk, but particularly her risk of a tumor that is not detected through mammographic screening (interval cancer). Therefore, we examined the associations of automatically measured volumetric breast density with screen-detected and interval cancer risk, separately. METHODS: Volumetric breast measures were assessed automatically using Volpara version 1...
June 5, 2017: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/28561776/qualitative-versus-quantitative-mammographic-breast-density-assessment-applications-for-the-us-and-abroad
#6
REVIEW
Stamatia Destounis, Andrea Arieno, Renee Morgan, Christina Roberts, Ariane Chan
Mammographic breast density (MBD) has been proven to be an important risk factor for breast cancer and an important determinant of mammographic screening performance. The measurement of density has changed dramatically since its inception. Initial qualitative measurement methods have been found to have limited consistency between readers, and in regards to breast cancer risk. Following the introduction of full-field digital mammography, more sophisticated measurement methodology is now possible. Automated computer-based density measurements can provide consistent, reproducible, and objective results...
May 31, 2017: Diagnostics
https://www.readbyqxmd.com/read/28558329/risk-stratification-of-women-with-false-positive-test-results-in-mammography-screening-based-on-mammographic-morphology-and-density-a-case-control-study
#7
Rikke Rass Winkel, My von Euler-Chelpin, Elsebeth Lynge, Pengfei Diao, Martin Lillholm, Michiel Kallenberg, Julie Lyng Forman, Michael Bachmann Nielsen, Wei Yao Uldall, Mads Nielsen, Ilse Vejborg
The long-term risk of breast cancer is increased in women with false-positive (FP) mammography screening results. We investigated whether mammographic morphology and/or density can be used to stratify these women according to their risk of future breast cancer METHODS: We undertook a case-control study nested in the population-based screening programme in Copenhagen, Denmark. We included 288 cases and 288 controls based on a cohort of 4743 women with at least one FP-test result in 1991-2005 who were followed up until 17 April 2008...
May 27, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/28557801/a-comprehensive-model-for-x-ray-projection-imaging-system-efficiency-and-image-quality-characterization-in-the-presence-of-scattered-radiation
#8
Pascal Monnin, Francis Verdun, Hilde Bosmans, Sunay Rodriguez Perez, Nicholas Marshall
This work proposes a method for assessing the detective quantum efficiency (DQE) of radiographic imaging systems that include both the x-ray detector and the antiscatter device. Cascaded linear analysis of the antiscatter device efficiency (DQEASD) with the x-ray detector DQE is used to develop a metric of system efficiency (DQEsys); the new metric is then related to the existing system efficiency parameters of effective DQE (eDQE) and generalized DQE (gDQE). The effect of scatter on signal transfer was modelled through its point spread function (PSF), leading to an x-ray beam transfer function (BTF) that multiplies with the classical presampling MTF to give the system MTF...
May 30, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28556478/pattern-of-relapse-in-low-risk-breast-cancer-patients-followed-within-a-community-care-network
#9
Anahid Agopian, Coraline Dubot, Sophie Houzard, Alexia Savignoni, Sylvie Fridmann, Anne Odier, Alain Fourquet, Virginie Fourchotte, Christine Dehghani, Claude Nos, Suzette Delaloge, Nayi Zongo, Paul Cottu
International guidelines have set the frame and methods of patients' surveillance after early breast cancer (BC) treatment. Since 1998, delegation of low-risk BC patients follow-up to nonhospital practitioners has been developed within a care network in the Paris region. We used the Gynecomed care network digital database to describe the characteristics of oncological events which occurred in the cohort, and to assess the quality of BC follow-up in relapsing patients. Events were defined as any local, contralateral, or metastatic recurrence, as well as second cancer or death due to any cause...
May 27, 2017: Breast Journal
https://www.readbyqxmd.com/read/28549292/globally-supported-radial-basis-function-based-collocation-method-for-evolution-of-level-set-in-mass-segmentation-using-mammograms
#10
Kanchan Lata Kashyap, Manish Kumar Bajpai, Pritee Khanna
Computer-aided detection systems play an important role for the detection of breast abnormalities using mammograms. Global segmentation of mass in mammograms is a complex process due to low contrast mammogram images, irregular shape of mass, speculated margins, and the presence of intensity variations of pixels. This work presents a new approach for mass detection in mammograms, which is based on the variational level set function. Mesh-free based radial basis function (RBF) collocation approach is employed for the evolution of level set function for segmentation of breast as well as suspicious mass region...
May 15, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28543761/experimental-characterization-of-a-direct-conversion-amorphous-selenium-detector-with-thicker-conversion-layer-for-dual-energy-contrast-enhanced-breast-imaging
#11
David A Scadutom, Olivier Tousignant, Wei Zhao
PURPOSE: Dual-energy contrast-enhanced imaging is being investigated as a tool to identify and localize angiogenesis in the breast, a possible indicator of malignant tumors. This imaging technique requires that x-ray images are acquired at energies above the k-shell binding energy of an appropriate radiocontrast agent. Iodinated contrast agents are commonly used for vascular imaging, and require x-ray energies greater than 33 keV. Conventional direct conversion amorphous selenium (a-Se) flat panel imagers for digital mammography show suboptimal absorption efficiencies at these higher energies...
May 21, 2017: Medical Physics
https://www.readbyqxmd.com/read/28541197/high-energy-resolution-hyperspectral-x-ray-imaging-for-low-dose-contrast-enhanced-digital-mammography
#12
Silvia Pani, Sarene Saifuddin, Filipa Ferreira, Nicholas Henthorn, Paul Seller, Paul Sellin, Philipp Stratmann, Matthew Veale, Matthew Wilson, Robert Cernik
Contrast-enhanced digital mammography (CEDM) is an alternative to conventional X-ray mammography for imaging dense breasts. However, conventional approaches to CEDM require a double exposure of the patient, implying higher dose and risk of incorrect image registration due to motion artifacts. A novel approach is presented, based on hyperspectral imaging, where a detector combining positional and high-resolution spectral information (in this case based on Cadmium Telluride) is used. This allows simultaneous acquisition of the two images required for CEDM...
May 18, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28540564/digital-breast-tomosynthesis-dbt-recommendations-from-the-italian-college-of-breast-radiologists-icbr-by-the-italian-society-of-medical-radiology-sirm-and-the-italian-group-for-mammography-screening-gisma
#13
Daniela Bernardi, Paolo Belli, Eva Benelli, Beniamino Brancato, Lauro Bucchi, Massimo Calabrese, Luca A Carbonaro, Francesca Caumo, Beatrice Cavallo-Marincola, Paola Clauser, Chiara Fedato, Alfonso Frigerio, Vania Galli, Livia Giordano, Paolo Giorgi Rossi, Paola Golinelli, Doralba Morrone, Giovanna Mariscotti, Laura Martincich, Stefania Montemezzi, Carlo Naldoni, Adriana Paduos, Pietro Panizza, Federica Pediconi, Fiammetta Querci, Antonio Rizzo, Gianni Saguatti, Alberto Tagliafico, Rubina M Trimboli, Marco Zappa, Chiara Zuiani, Francesco Sardanelli
This position paper, issued by ICBR/SIRM and GISMa, summarizes the evidence on DBT and provides recommendations for its use. In the screening setting, DBT in adjunct to digital mammography (DM) increased detection rate by 0.5-2.7‰ and decreased false positives by 0.8-3.6% compared to DM alone in observational and double-testing experimental studies. The reduction in recall rate could be less prominent in those screening programs which already have low recall rates with DM. The increase in radiation exposure associated with DM/DBT protocols has been solved by the introduction of synthetic mammograms (sDM) reconstructed from DBT datasets...
May 25, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28539166/can-secondary-osteoporosis-be-identified-when-screening-for-osteoporosis-with-digital-x-ray-radiogrammetry-initial-results-from-the-stockholm-osteoporosis-project-stop
#14
Michael L Wilczek, Johan Kälvesten, Ingrid Bergström, Ylva Pernow, Maria Sääf, Bo Freyschuss, Torkel B Brismar
OBJECTIVES: To identify causes of low age-adjusted bone mass at digital X-ray radiogrammetry (DXR) in individuals attending an osteoporosis screening program. STUDY DESIGN: In a descriptive observational cohort study, women aged 40-75 years who attended a general mammography screening program had their bone mass investigated with DXR and answered a questionnaire regarding several clinical risk factors for osteoporosis. Each month the 2% with the lowest Z-scores were selected for further clinical examination with DXA of the hip and lumbar spine and pre-defined blood tests...
July 2017: Maturitas
https://www.readbyqxmd.com/read/28535623/-the-breast-cancer-diagnosis-accuracy-of-the-digital-breast-tomosynthesis-technique
#15
H W Zhang, J T Li, M H Lü, L Qin, L F Li, S D Cui, H Liu
Objective: To explore the Digital breast tomosynthesis technique (DBT) in breast cancer diagnosis accuracy. Methods: Choose 263 cases of patients with breast lesions, using DBT combined FFDM (Full field digital mammography) independent FFDM, evaluate the diagnostic accuracy of breast cancer. Results: The ROC curve area (AUC) of two kinds of breast cancer diagnosis methods (DBT combined FFDM and independent FFDM) were 0.954±0.014 and 0.907±0.019, with significant difference (P=0.000 3). In premenopausal patients and breast density ACR3-4 cases, DBT combined FFDM diagnosis accuracy is higher than FFDM alone group, with significant difference (P<0...
May 16, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28530138/review-and-management-of-breast-lesions-detected-with-breast-tomosynthesis-but-not-visible-on-mammography-and-ultrasonography
#16
Fusun Taskin, Yasemin Durum, Aykut Soyder, Alparslan Unsal
Background Breast tomosynthesis is more sensitive than mammography and can detect lesions that are not always visible with conventional methods such as digital mammography (MG) and ultrasonography (US). No standardized approach is available for the management of lesions that are detectable with tomosynthesis but are not visible on MG or US. Purpose To review suspicious breast lesions detected with tomosynthesis but not visible on two-dimensional (2D) MG or US and to determine the management options for these lesions...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28523569/effect-of-age-on-breast-cancer-screening-using-tomosynthesis-in-combination-with-digital-mammography
#17
Elizabeth A Rafferty, Stephen L Rose, Dave P Miller, Melissa A Durand, Emily F Conant, Debra S Copit, Sarah M Friedewald, Donna M Plecha, Ingrid L Ott, Mary K Hayes, Kara L Carlson, Thomas M Cink, Lora D Barke, Linda N Greer, Loren T Niklason
PURPOSE: To determine the effect of tomosynthesis imaging as a function of age for breast cancer screening. METHODS: Screening performance metrics from 13 institutions were examined for 12 months prior to introduction of tomosynthesis (period 1) and compared to those after introduction of tomosynthesis (period 2, range 3-22 months). Screening metrics for women ages 40-49, 50-59, 60-69, and 70+ , included rates per 1000 screens for recalls, biopsies, cancers, and invasive cancers detected...
May 18, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28516226/benefit-of-adding-digital-breast-tomosynthesis-to-digital-mammography-for-breast-cancer-screening-focused-on-cancer-characteristics-a-meta-analysis
#18
REVIEW
Seong Jong Yun, Chang-Woo Ryu, Sun Jung Rhee, Jung Kyu Ryu, Ji Young Oh
PURPOSE: We evaluated the benefit of adding digital breast tomosynthesis (DBT) to full-field digital mammography (FFDM) compared to FFDM alone for breast cancer detection, focusing on cancer characteristics. METHODS: We searched electronic databases and relevant references for published studies comparing DBT plus FFDM to FFDM alone for breast cancer screening. Pooled risk ratios (RRs) for various pathologic findings were determined using random effects models. RESULTS: Eleven eligible studies were included...
May 18, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28508724/the-impact-of-simulated-motion-blur-on-lesion-detection-performance-in-full-field-digital-mammography
#19
Ahmed K Abdullah, John D Thompson, Claire E Mercer, Rob Aspin, Judith Kelly, Peter Hogg
OBJECTIVE: Motion blur is a known phenomenon in full-field digital mammography, but the impact on lesion detection is unknown. This is the first study to investigate detection performance with varying magnitudes of simulated motion blur. METHOD: Seven observers (15±5 years' reporting experience) evaluated 248 cases (62 containing malignant masses, 62 containing malignant microcalcifications and 124 normal cases) for three conditions: no blurring (0 mm) and two magnitudes of simulated blurring (0...
May 16, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28508466/comparison-of-the-time-taken-for-localised-breast-surgery-pre-and-post-introduction-of-intra-operative-digital-specimen-mammography
#20
Vinicius Carraro do Nascimento, Anita G Bourke
INTRODUCTION: More than half of the patients with an impalpable malignant breast lesion have a mammographically detected and imaged-guided localisation, which can be technically challenging for the breast surgeon. Specimen imaging is used to confirm successful excision of the localised index lesion and has improved the operating list efficiency resulting in a higher number of excisions per surgical list. The aim of this study was to evaluate whether introducing IDSM (intra-operative digital specimen mammography) saved operation time for localised breast surgery...
May 16, 2017: Journal of Medical Imaging and Radiation Oncology
keyword
keyword
10250
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"