keyword
MENU ▼
Read by QxMD icon Read
search

Mammography

keyword
https://www.readbyqxmd.com/read/28549292/globally-supported-radial-basis-function-based-collocation-method-for-evolution-of-level-set-in-mass-segmentation-using-mammograms
#1
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/28549010/a-clinical-feasibility-trial-for-identification-of-exceptional-responders-in-whom-breast-cancer-surgery-can-be-eliminated-following-neoadjuvant-systemic-therapy
#2
Henry M Kuerer, Gaiane M Rauch, Savitri Krishnamurthy, Beatriz E Adrada, Abigail S Caudle, Sarah M DeSnyder, Dalliah M Black, Lumarie Santiago, Brian P Hobbs, Anthony Lucci, Michael Gilcrease, Rosa F Hwang, Rosalind P Candelaria, Mariana Chavez-MacGregor, Benjamin D Smith, Elsa Arribas, Tanya Moseley, Mediget Teshome, Makesha V Miggins, Vicente Valero, Kelly K Hunt, Wei T Yang
OBJECTIVE: To determine the accuracy of fine-needle aspiration (FNA) and vacuum-assisted core biopsy (VACB) in assessing the presence of residual cancer in the breast after neoadjuvant systemic therapy (NST). SUMMARY BACKGROUND DATA: Pathologic complete response (pCR) rates after NST have improved dramatically, suggesting that surgery might be avoided in some patients. Safe avoidance of surgery would require accurate confirmation of no residual invasive/in situ carcinoma...
May 25, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28548469/trends-in-breast-cancer-epidemiology-in-chelyabinsk-region-2006-2015
#3
Irina A Aksenova, Malcolm A Moore, Alla S Domozhirova
Breast cancer among women occupies a leading position in the profile of cancer incidence in most parts of the world. The present study of the incidence and prevalence of breast cancer was carried out using data from the Chelyabinsk population cancer registry for 2006-2015. A stable growth trend in the incidence over time was noted overall, as well as major differences in the figures for women of different ethnicities (Russian, Tatar, Bashkir), by far the highest incidences being observed for Russian women. Urban rates were generally higher than in rural sites and a shift towards older age at presentation was seen between 2006 and 2015...
April 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28545406/deterministic-compressive-sampling-for-high-quality-image-reconstruction-of-ultrasound-tomography
#4
Tran Quang Huy, Huynh Huu Tue, Ton That Long, Tran Duc-Tan
BACKGROUND: A well-known diagnostic imaging modality, termed ultrasound tomography, was quickly developed for the detection of very small tumors whose sizes are smaller than the wavelength of the incident pressure wave without ionizing radiation, compared to the current gold-standard X-ray mammography. Based on inverse scattering technique, ultrasound tomography uses some material properties such as sound contrast or attenuation to detect small targets. The Distorted Born Iterative Method (DBIM) based on first-order Born approximation is an efficient diffraction tomography approach...
May 25, 2017: BMC Medical Imaging
https://www.readbyqxmd.com/read/28545194/knowledge-attitudes-and-preventive-practice-towards-breast-cancer-among-general-practitioner-health-professionals-in-morocco
#5
Naima Abda, Adil Najdi, Samira El Fakir, Nabil Tachfouti, Mohamed Berraho, Youssef Chami Khazraji, Loubna Abousselham, Latifa Belakhel, Rachid Bekkali, Chakib Nejjari
Background: Breast cancer is the most common cancer of women in Morocco and its diagnosis is usually made at advanced stages. The aim of this study was to describe the knowledge, practices and attitudes of general practitioners regarding early detection of breast cancer. Methods: A cross-sectional study was carried out during July 2011 on a sample of 140 general practitioners employed in basic health care facilities. Results: The majority (85.7%) of general practitioners were aware of the existence of a ministerial circular which aimed to generalize breast cancer screening...
April 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
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
#6
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/28542784/benefits-and-harms-of-breast-cancer-screening-with-mammography-in-women-aged-40-49-years-a-systematic-review
#7
REVIEW
Caroline van den Ende, Anouk M Oordt-Speets, Hilde Vroling, Heleen M E van Agt
Early detection of breast cancer through screening can lower breast cancer mortality rates and reduce the burden of this disease in the population. In most western countries, mammography screening starting from age 50 is recommended. However, there is debate about whether breast cancer screening should be extended to younger women. This systematic review provides an overview of the evidence from RCT's on the benefits and harms of breast cancer screening with mammography in women aged 40 to 49 years. The quality of the evidence for each outcome was appraised using the GRADE approach...
May 19, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28542677/association-of-previous-clinical-breast-examination-with-reduced-delays-and-earlier-stage-breast-cancer-diagnosis-among-women-in-peru
#8
Anya Romanoff, Tara Hayes Constant, Kay M Johnson, Manuel Cedano Guadiamos, Ana María Burga Vega, Joseph Zunt, Benjamin O Anderson
Importance: Mammographic screening is impractical in most of the world where breast cancers are first identified based on clinical signs and symptoms. Clinical breast examination may improve early diagnosis directly by finding breast cancers at earlier stages or indirectly by heightening women's awareness of breast health concerns. Objective: To investigate factors that influence time to presentation and stage at diagnosis among patients with breast cancer to determine whether history of previous clinical breast examination is associated with earlier presentation and/or earlier cancer stage at diagnosis...
May 25, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28541197/high-energy-resolution-hyperspectral-x-ray-imaging-for-low-dose-contrast-enhanced-digital-mammography
#9
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
#10
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/28540199/role-of-different-imaging-modalities-of-vascular-calcification-in-predicting-outcomes-in-chronic-kidney-disease
#11
REVIEW
Sinee Disthabanchong, Sarinya Boongird
Vascular calcification (VC) is common among patients with chronic kidney disease (CKD). The severity of VC is associated with increased risk of cardiovascular events and mortality. Risk factors for VC include traditional cardiovascular risk factors as well as CKD-related risk factors such as increased calcium and phosphate load. VC is observed in arteries of all sizes from small arterioles to aorta, both in the intima and the media of arterial wall. Several imaging techniques have been utilized in the evaluation of the extent and the severity of VC...
May 6, 2017: World Journal of Nephrology
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
#12
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/28538550/breast-cancer-after-augmentation-oncologic-and-reconstructive-considerations-among-women-undergoing-mastectomy
#13
Eugenia H Cho, Ronnie L Shammas, Brett T Phillips, Rachel A Greenup, E Shelley Hwang, Scott T Hollenbeck
BACKGROUND: Breast augmentation with subglandular versus subpectoral implants may differentially impact the early detection of breast cancer and treatment recommendations. The authors assessed the impact of prior augmentation on the diagnosis and management of breast cancer in women undergoing mastectomy. METHODS: Breast cancer diagnosis and management were retrospectively analyzed in all women with prior augmentation undergoing therapeutic mastectomy at the authors' institution from 1993 to 2014...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28537847/diagnostic-performance-of-mri-versus-galactography-in-women-with-pathologic-nipple-discharge-a-systematic-review-and-meta-analysis
#14
Nicole Berger, Andrea Luparia, Giovanni Di Leo, Luca Alessandro Carbonaro, Rubina Manuela Trimboli, Federico Ambrogi, Francesco Sardanelli
OBJECTIVE: The objective of our study was to perform a systematic review of the literature of the diagnostic accuracy of MRI compared with galactography in women with pathologic nipple discharge. MATERIALS AND METHODS: A systematic literature search was performed (MEDLINE, Embase, Web of Science) for articles evaluating the diagnostic performance of MRI and galactography in patients with pathologic nipple discharge and with histologic verification or clinical follow-up...
May 24, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28537752/imaging-features-of-spindle-cell-breast-lesions
#15
Andrew S Taliaferro, Valerie Fein-Zachary, Shambhavi Venkataraman, Tejas S Mehta, Amee Patel, Priscilla J Slanetz
OBJECTIVE: The purpose of our study is to review the clinical presentation, multimodality appearance, and management of the most common benign and malignant spindle cell lesions of the breast. CONCLUSION: Spindle cell lesions of the breast exhibit characteristic features at mammography, ultrasound, and MRI. Although a definitive diagnosis of these lesions cannot be made with diagnostic imaging alone, knowledge of their characteristic imaging features can assist in refining the differential diagnosis and guiding appropriate management...
May 24, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28535624/-utilisation-of-electrical-impedance-tomography-and-or-ultrasound-and-mammography-in-breast-disease-diagnosis-a-controlled-study
#16
F Xu, M X Li, H Z Jusko, Hongchuan Jiang
Objective: To investigate the diagnostic accuracy of electrical impedance tomography (EIT) for benign and malignant breast diseases incomparison to conventional ultrasonography and mammography. Methods: A total of 121 patients with 126 breast lesions who underwent mammography ultrasonography and EIT were enrolled in the study. All of these lessions were were confirmed by pathological biopsy. The accuracy, sensitivity, specificity, positive predictive value and negative predictive value of EIT, ultrasonography and mammography were calculated with histology as the gold standard...
May 16, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28535623/-the-breast-cancer-diagnosis-accuracy-of-the-digital-breast-tomosynthesis-technique
#17
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/28532642/optical-mammography-in-patients-with-breast-cancer-undergoing-neoadjuvant-chemotherapy-individual-clinical-response-index
#18
Pamela G Anderson, Sirishma Kalli, Angelo Sassaroli, Nishanth Krishnamurthy, Shital S Makim, Roger A Graham, Sergio Fantini
RATIONALE AND OBJECTIVES: We present an optical mammography study that aims to develop quantitative measures of pathologic response to neoadjuvant chemotherapy (NAC) in patients with breast cancer. Such quantitative measures are based on the concentrations of oxyhemoglobin ([HbO2]), deoxyhemoglobin ([Hb]), total hemoglobin ([HbT]), and hemoglobin saturation (SO2) in breast tissue at the tumor location and at sequential time points during chemotherapy. MATERIALS AND METHODS: Continuous-wave, spectrally resolved optical mammography was performed in transmission and parallel-plate geometry on 10 patients before treatment initiation and at each NAC administration (mean number of optical mammography sessions: 12, range: 7-18)...
May 19, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28532422/conclusions-in-systematic-reviews-of-mammography-for-breast-cancer-screening-and-associations-with-review-design-and-author-characteristics
#19
Smriti Raichand, Adam G Dunn, Mei-Sing Ong, Florence T Bourgeois, Enrico Coiera, Kenneth D Mandl
BACKGROUND: Debates about the benefits and harms of mammography continue despite the accumulation of evidence. We sought to quantify the disagreement across systematic reviews of mammography and determine whether author or design characteristics were associated with conclusions that were favourable to the use of mammography for routine breast cancer screening. METHODS: We identified systematic reviews of mammography published between January 2000 and November 2015, and extracted information about the selection of evidence, age groups, the use of meta-analysis, and authors' professions and financial competing interest disclosures...
May 22, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/28530138/review-and-management-of-breast-lesions-detected-with-breast-tomosynthesis-but-not-visible-on-mammography-and-ultrasonography
#20
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
keyword
keyword
2732
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"