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Digital mammography

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https://www.readbyqxmd.com/read/28812190/diagnostic-value-of-the-stand-alone-synthetic-image-in-digital-breast-tomosynthesis-examinations
#1
Julia Garayoa, Margarita Chevalier, Maria Castillo, Ignacio Mahillo-Fernández, Najim Amallal El Ouahabi, Carmen Estrada, Alejandro Tejerina, Olivia Benitez, Julio Valverde
OBJECTIVE: To demonstrate the non-inferiority of synthetic image (SI) mammography versus full-field digital mammography (FFDM) in breast tomosynthesis (DBT) examinations. METHODS: An observational, retrospective, single-centre, multireader blinded study was performed, using 2384 images to directly compare SI and FFDM based on Breast Imaging Reporting and Data System (BIRADS) categorisation and visibility of radiological findings. Readers had no access to digital breast tomosynthesis slices...
August 15, 2017: European Radiology
https://www.readbyqxmd.com/read/28806573/digital-breast-tomosynthesis-vacuum-assisted-biopsy-for-tomosynthesis-detected-sonographically-occult-lesions
#2
Nikki S Ariaratnam, Sherrill T Little, Markus A Whitley, Kristy Ferguson
PURPOSE: To assess the utility and pathological results from DBT VAB for lesions occult on 2D mammography and breast ultrasound (US). MATERIALS AND METHODS: A retrospective review of 1116 consecutive stereotactic biopsies was performed over 27months. DBT VAB was performed for 38 non-calcified lesions which were solely detected using DBT. Imaging findings and pathology results were reviewed. RESULTS: Pathologic findings were malignant in 8 of 38 lesions [masses (5) and distortion (3)]...
August 5, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28806320/the-value-of-quality-assured-magnetic-resonance-imaging-of-the-breast-for-the-early-detection-of-breast-cancer-in-asymptomatic-women
#3
Uwe Fischer, Susanne Luftner-Nagel, Friedemann Baum, Katharina Marten-Engelke, Susanne Wienbeck
PURPOSE: The aim of this study was to evaluate the exclusive performance of quality-assured high-resolution breast magnetic resonance imaging (MRI) for early detection of breast cancer in a population of asymptomatic women. MATERIALS AND METHODS: A total of 1189 MRI examinations performed in 789 asymptomatic women (mean age, 51.1 years) were evaluated. All examinations were performed using open bilateral surface coil, dedicated compression device, and high spatial resolution (matrix, 512 × 512)...
August 12, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28783629/low-dose-contrast-enhanced-breast-ct-using-spectral-shaping-filters-an-experimental-study
#4
Andrey Makeev, Stephen J Glick
Iodinated contrast-enhanced x-ray imaging of the breast has been studied with various modalities including, fullfield digital mammography (FFDM), digital breast tomosynthesis (DBT), and dedicated breast CT (BCT). Contrast imaging with breast CT has a number of advantages over FFDM and DBT including the lack of breast compression, and generation of fully isotropic, three-dimensional reconstructions. Nonetheless, for breast CT to be considered as a viable tool for routine clinical use, it would be desirable to reduce radiation dose...
August 2, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28780840/-diagnostic-value-of-quantitative-pharmacokinetic-parameters-and-relative-quantitative-pharmacokinetic-parameters-in-breast-lesions-with-dynamic-contrast-enhanced-mri
#5
T T Sun, W H Liu, Y Q Zhang, L H Li, R Wang, Y Y Ye
Objective: To explore the differential between the value of dynamic contrast-enhanced MRI quantitative pharmacokinetic parameters and relative pharmacokinetic quantitative parameters in breast lesions. Methods: Retrospective analysis of 255 patients(262 breast lesions) who was obtained by clinical palpation , ultrasound or full-field digital mammography , and then all lessions were pathologically confirmed in Zhongda Hospital, Southeast University from May 2012 to May 2016. A 3.0 T MRI scanner was used to obtain the quantitative MR pharmacokinetic parameters: volume transfer constant (K(trans)), exchange rate constant (k(ep))and extravascular extracellular volume fraction (V(e))...
August 1, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28780702/clinical-implementation-of-synthesized-mammography-with-digital-breast-tomosynthesis-in-a-routine-clinical-practice
#6
Phoebe E Freer, Joanna Riegert, Laura Eisenmenger, Dominik Ose, Nicole Winkler, Matthew A Stein, Gregory J Stoddard, Rachel Hess
BACKGROUND: Most published studies evaluating digital breast tomosynthesis (DBT) included a separate 2-dimensional full-field digital mammogram (FFDM) for DBT screening protocols, increasing radiation from screening mammography. Synthesized mammography (SM) creates a 2-dimensional image from the DBT source data, and if used in place of FFDM, it reduces radiation of DBT screening. This study evaluated the implementation of SM + DBT in routine screening practice in terms of recall rates, cancer detection rates (CDR), % of minimal cancers, % of node-positive cancers, and positive predictive values (PPV)...
August 5, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28760363/strategies-for-decreasing-screening-mammography-recall-rates-while-maintaining-performance-metrics
#7
Lisa A Mullen, Babita Panigrahi, Jacqueline Hollada, Benita Panigrahi, Eniola T Falomo, Susan C Harvey
RATIONALE AND OBJECTIVE: This study aimed to determine the impact of interventions designed to reduce screening mammography recall rates on screening performance metrics. MATERIALS AND METHODS: We assessed baseline performance for full-field digital mammography (FFDM) and digital breast tomosynthesis mammography (DBT) for a 3-year period before intervention. The first intervention sought to increase awareness of recalls from screening mammography. Breast imagers discussed their perceptions regarding screening recalls and were required to review their own recalled cases, including outcomes of diagnostic evaluation and biopsy...
July 28, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28750846/patient-financial-responsibility-reduces-use-of-digital-breast-tomosynthesis-screening%C3%A2-mammography
#8
Emily L Sedgwick, Ana P Benveniste, Frederick J Severs, Lilian O Ebuoma, Tamara Ortiz-Perez, Ashley A Roark, Kenny Sam, Arti Jonna, Karla A Sepulveda
No abstract text is available yet for this article.
July 24, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28750354/assessing-tumor-extent-on-contrast-enhanced-spectral-mammography-versus-full-field-digital-mammography-and-ultrasound
#9
Bhavika K Patel, Sandra Alheli Garza, Sarah Eversman, Yania Lopez-Alvarez, Heidi Kosiorek, Barbara A Pockaj
OBJECTIVES: To compare breast cancer size measurements on full-field digital mammography (FFDM), contrast-enhanced spectral mammography (CEDM), and ultrasound (US), with histologic tumor size used as the reference standard. Material and methods The HIPAA complaint, IRB approved study comprised 88 women with newly diagnosed breast cancer who underwent FFDM and CEDM;74 also had US. Breast density, histologic subtype, and maximum tumor measurements were recorded. RESULTS: Pearson correlation coefficients for FFDM, US, and CEDM vs histopathology were 0...
July 12, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28748346/trends-in-incidence-and-tumour-grade-in-screen-detected-ductal-carcinoma-in-situ-and-invasive-breast-cancer
#10
Jacky D Luiten, Adri C Voogd, Ernest J T Luiten, Lucien E M Duijm
PURPOSE: In a biennial screening mammography programme, we analysed the trends in incidence of screen-detected DCIS and invasive breast cancers in the era of screen-film mammography (SFM) screening, the period of the transition to full-field digital mammography (FFDM) screening and the period of FFDM screening. We also investigated a possible association between the incidence and grading of screen-detected DCIS and invasive breast cancer. METHODS: In the southern part of the Netherlands, FFDM screening gradually replaced SFM screening between May 2009 and April 2010...
July 26, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28742062/a-method-to-incorporate-the-effect-of-beam-quality-on-image-noise-in-a-digitally-reconstructed-radiograph-drr-based-computer-simulation-for-optimisation-of-digital-radiography
#11
Craig S Moore, Tim J Wood, John R Saunderson, Andy W Beavis
The use of computer simulated digital x-radiographs for optimisation purposes has become widespread in recent years. To make these optimisation investigations effective, it is vital simulated radiographs contain accurate anatomical and system noise. Computer algorithms that simulate radiographs based solely on the incident detector x-ray intensity ('dose') have been reported extensively in the literature. However, while it has been established for digital mammography that x-ray beam quality is an important factor when modelling noise in simulated images there are no such studies for diagnostic imaging of the chest, abdomen and pelvis...
July 25, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28740781/direct-to-implant-reconstruction-in-nipple-sparing-mastectomy-patient-selection-by-preoperative-digital-mammogram
#12
Alberto O Rancati, Claudio H Angrigiani, Dennis C Hammond, Maurizio B Nava, Eduardo G Gonzalez, Julio C Dorr, Gustavo F Gercovich, Nicola Rocco, Roman L Rostagno
BACKGROUND: Digital mammography clearly distinguishes gland tissue density from the overlying nonglandular breast tissue coverage, which corresponds to the existing tissue between the skin and the superficial layer of the fascia superficialis surrounding the gland (i.e., dermis and subcutaneous fat). Preoperative digital imaging can determine the thickness of this breast tissue coverage, thus facilitating planning and reducing the rate of necrotic complications after direct to implant (DTI) reconstruction in nipple sparing mastectomy (NSM)...
June 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28716454/a-randomised-trial-of-screening-with-digital-breast-tomosynthesis-plus-conventional-digital-2d-mammography-versus-2d-mammography-alone-in-younger-higher-risk-women
#13
Anthony J Maxwell, Michael Michell, Yit Y Lim, Susan M Astley, Mary Wilson, Emma Hurley, D Gareth Evans, Anthony Howell, Asif Iqbal, John Kotre, Stephen Duffy, Julie Morris
INTRODUCTION: Digital breast tomosynthesis (DBT) has been shown to increase invasive cancer detection rates at screening compared to full field digital (2D) mammography alone, and some studies have reported a reduction in the screening recall rate. No prospective randomised studies of DBT have previously been published. This study compares recall rates with 2D mammography with and without concurrent DBT in women in their forties with a family history of breast cancer undergoing incident screening...
June 30, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28715278/bi-rads-category-3-comparison-probably-benign-category-after-recall-from-screening-before-and-after-implementation-of-digital-breast-tomosynthesis
#14
Elizabeth S McDonald, Anne Marie McCarthy, Susan P Weinstein, Mitchell D Schnall, Emily F Conant
Purpose To evaluate Breast Imaging Reporting and Data System (BI-RADS) category 3 assessment at diagnostic examination after recall from screening in a large urban population after implementation of digital breast tomosynthesis (DBT) by focusing both on overall use and use stratified by recalled finding type and outcome at 2 years. Materials and Methods This was an intuitional review board-approved and HIPAA-compliant retrospective review of 10 728 digital mammography (DM) examinations from September 1, 2010, to August 30, 2011, and 15 571 screening DBT examinations from October 1, 2011, to February 28, 2013...
July 17, 2017: Radiology
https://www.readbyqxmd.com/read/28713173/a-standard-mammography-unit-standard-3d-ultrasound-probe-fusion-prototype-first-results
#15
Rüdiger Schulz-Wendtland, Sebastian M Jud, Peter A Fasching, Arndt Hartmann, Marcus Radicke, Claudia Rauh, Michael Uder, Marius Wunderle, Paul Gass, Hanna Langemann, Matthias W Beckmann, Julius Emons
AIM: The combination of different imaging modalities through the use of fusion devices promises significant diagnostic improvement for breast pathology. The aim of this study was to evaluate image quality and clinical feasibility of a prototype fusion device (fusion prototype) constructed from a standard tomosynthesis mammography unit and a standard 3D ultrasound probe using a new method of breast compression. MATERIALS AND METHODS: Imaging was performed on 5 mastectomy specimens from patients with confirmed DCIS or invasive carcinoma (BI-RADS (™) 6)...
June 2017: Geburtshilfe und Frauenheilkunde
https://www.readbyqxmd.com/read/28712610/the-hiqa-s-health-technology-assessment-of-breast-screening-highlighting-some-of-the-challenges-posed-by-evaluations-of-screening-programs
#16
Conor Teljeur, Patrick Moran, Patricia Harrington, Máirín Ryan
A review of the Health Information and Quality Authority's (HIQA) assessment of breast cancer surveillance cancer criticized how the results were presented and interpreted. The health technology assessment (HTA) investigated surveillance options for women aged less than 50 years who were at elevated risk of breast cancer. Surveillance strategies using digital mammography, magnetic resonance imaging, or a combination of the two modalities were modeled on the basis of diagnostic test accuracy. The HTA faced a number of issues, including the use of diagnostic test accuracy as a surrogate for long-term outcomes; modeling interventions that were not considered acceptable to clinicians; and extrapolating for screening intervals and age ranges not directly supported by available evidence...
July 2017: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/28710582/comparison-of-digital-mammography-and-digital-breast-tomosynthesis-in-the-detection-of-architectural-distortion
#17
Elizabeth H Dibble, Ana P Lourenco, Grayson L Baird, Robert C Ward, A Stanley Maynard, Martha B Mainiero
OBJECTIVES: To compare interobserver variability (IOV), reader confidence, and sensitivity/specificity in detecting architectural distortion (AD) on digital mammography (DM) versus digital breast tomosynthesis (DBT). METHODS: This IRB-approved, HIPAA-compliant reader study used a counterbalanced experimental design. We searched radiology reports for AD on screening mammograms from 5 March 2012-27 November 2013. Cases were consensus-reviewed. Controls were selected from demographically matched non-AD examinations...
July 14, 2017: European Radiology
https://www.readbyqxmd.com/read/28707529/interpretation-of-digital-breast-tomosynthesis-preliminary-study-on-comparison-with-picture-archiving-and-communication-system-pacs-and-dedicated-workstation
#18
Young Seon Kim, Jung Min Chang, Ann Yi, Sung Ui Shin, Myung Eun Lee, Won Hwa Kim, Nariya Cho, Woo Kyung Moon
OBJECTIVES: To compare the diagnostic accuracy and efficiency in the interpretation of digital breast tomosynthesis (DBT) images using picture archiving and communication system (PACS) and a dedicated workstation. METHODS: A total of 97 DBT images performed for screening or diagnostic purposes were stored in both a workstation and PACS, and evaluated in combination with digital mammography by three independent radiologists retrospectively. Breast Imaging Reporting and Data System final assessments and likelihood of malignancy (%) were assigned and the interpretation time when using the workstation and PACS was recorded...
July 14, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28696192/breast-cancer-screening-does-tomosynthesis-augment-mammography
#19
REVIEW
Traci A Takahashi, Christoph I Lee, Kay M Johnson
Digital breast tomosynthesis (DBT) is a relatively new imaging technology that is being adopted widely for breast cancer screening. Initial evidence suggests that it may reduce recall rates and increase cancer detection rates when added to digital mammography screening. However, more rigorous, prospective studies are needed to determine whether it improves long-term clinical outcomes of breast cancer screening.
July 2017: Cleveland Clinic Journal of Medicine
https://www.readbyqxmd.com/read/28681390/a-deep-feature-fusion-methodology-for-breast-cancer-diagnosis-demonstrated-on-three-imaging-modality-datasets
#20
Natalia Antropova, Benjamin Q Huynh, Maryellen L Giger
Deep learning methods for radiomics/computer-aided diagnosis (CADx) are often prohibited by small datasets, long computation time, and the need for extensive image preprocessing. We present a methodology that extracts and pools low- to mid-level features using a pre-trained convolutional neural network and fuses them with handcrafted radiomic features computed using conventional CADx methods. Our fusion-based method demonstrates significant improvements to previous breast cancer CADx methods across three clinical imaging modalities (dynamic contrast-enhanced MRI, full-field digital mammography, and ultrasound) in terms of predictive performance in the task of estimating lesion malignancy...
July 6, 2017: Medical Physics
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