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Contrast enhanced mammography

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https://www.readbyqxmd.com/read/28318506/assessment-of-disease-extent-on-contrast-enhanced-mri-in-breast-cancer-detected%C3%A2-at-digital-breast-tomosynthesis-versus%C3%A2-digital-mammography-alone
#1
A V Chudgar, E F Conant, S P Weinstein, B M Keller, M Synnestvedt, P Yamartino, E S McDonald
AIM: To compare the utility of breast magnetic resonance imaging (MRI) in determining the extent of disease in patients with newly diagnosed breast cancer detected on combination digital breast tomosynthesis (DBT) versus digital screening mammography (DM). MATERIALS AND METHODS: Review of 24,563 DBT-screened patients and 10,751 DM-screened patients was performed. Two hundred and thirty-five DBT patients underwent subsequent MRI examinations; 82 to determine extent of disease after newly diagnosed breast cancer...
March 16, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28299890/a-case-of-adenomyoepithelioma-of-the-breast-showing-strong-uptake-of-18-f-fluorodeoxyglucose-on-a-positron-emission-tomography
#2
Takaaki Oba, Kazuma Maeno, Mayu Ono, Asumi Iesato, Tokiko Ito, Toshiharu Kanai, Yasuhiro Mochizuki, Ken-Ichi Ito, Akihiko Yoshizawa, Fumiyoshi Takayama
An adenomyoepithelioma of the breast is a rare tumor characterized by biphasic proliferation of both epithelial and myoepithelial cells. This tumor is generally considered as a benign neoplasm, and there are few reports describing the imaging features of this tumor through (18) F-fluorodeoxyglucose positron emission tomography (FDG-PET). Here, we report a case of an adenomyoepithelioma that showed strong uptake of FDG on PET similar to that observed with a malignant tumor. A 73-year-old woman presented to our hospital with a 3...
March 2017: Breast Journal
https://www.readbyqxmd.com/read/28284000/a-method-for-microcalcifications-detection-in-breast-mammograms
#3
Abbas H Hassin Alasadi, Ahmed Kadem Hamed Al-Saedi
Breast cancer is the most cause of death for women above age 40 around the world. In this paper, we propose a method to detect microcalcifications in digital mammography images using two-dimensional Discrete Wavelets Transform and image enhancement techniques for removing noise as well as to get a better contrast. The initial step is applying a preprocessing techniques to improve the edge of the breast and then segmentation process (Region of interest) for eliminating some regions in the image, which are not useful for the mammography interpretation...
April 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28267545/fourier-domain-image-fusion-for-differential-x-ray-phase-contrast-breast-imaging
#4
Eduardo Coello, Jonathan I Sperl, Dirk Bequé, Tobias Benz, Kai Scherer, Julia Herzen, Anikó Sztrókay-Gaul, Karin Hellerhoff, Franz Pfeiffer, Cristina Cozzini, Susanne Grandl
X-Ray Phase-Contrast (XPC) imaging is a novel technology with a great potential for applications in clinical practice, with breast imaging being of special interest. This work introduces an intuitive methodology to combine and visualize relevant diagnostic features, present in the X-ray attenuation, phase shift and scattering information retrieved in XPC imaging, using a Fourier domain fusion algorithm. The method allows to present complementary information from the three acquired signals in one single image, minimizing the noise component and maintaining visual similarity to a conventional X-ray image, but with noticeable enhancement in diagnostic features, details and resolution...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28209330/role-of-magnetic-resonance-imaging-in-detection-of-pathologic-complete-remission-in-breast-cancer-patients-treated-with-neoadjuvant-chemotherapy-a-meta-analysis
#5
REVIEW
Yan-Lin Gu, Si-Meng Pan, Jie Ren, Zhi-Xue Yang, Guo-Qin Jiang
Pathologic complete remission after neoadjuvant chemotherapy has a role in guiding the management of breast cancer. The present meta-analysis examined the accuracy of contrast-enhanced magnetic resonance imaging (CE-MRI) and diffusion-weighted magnetic resonance imaging (DW-MRI) in detecting the response to neoadjuvant chemotherapy and compared CE-MRI with ultrasonography, mammography, and positron emission tomography/computed tomography (PET/CT). Medical subject heading terms and related keywords were searched to generate a compilation of eligible studies...
January 11, 2017: Clinical Breast Cancer
https://www.readbyqxmd.com/read/28187012/preoperative-axillary-lymph-node-evaluation-in-breast-cancer-current-issues-and-literature-review
#6
Hee Young Choi, Minho Park, Mirinae Seo, Eunjee Song, So Youn Shin, Yu-Mee Sohn
Axillary lymph node (ALN) status is an important prognostic factor for overall breast cancer survival. In current clinical practice, ALN status is evaluated before surgery via multimodal imaging and physical examination. Mammography is typically suboptimal for complete ALN evaluation. Currently, ultrasonography is widely used to evaluate ALN status; nonetheless, results may vary according to operator. Ultrasonography is the primary imaging modality for evaluating ALN status. Other imaging modalities including contrast-enhanced magnetic resonance imaging, computed tomography, and positron emission tomography/computed tomography can play additional roles in axillary nodal staging...
March 2017: Ultrasound Quarterly
https://www.readbyqxmd.com/read/28152264/prediction-of-malignancy-by-a-radiomic-signature-from-contrast-agent-free-diffusion-mri-in-suspicious-breast-lesions-found-on-screening-mammography
#7
Sebastian Bickelhaupt, Daniel Paech, Philipp Kickingereder, Franziska Steudle, Wolfgang Lederer, Heidi Daniel, Michael Götz, Nils Gählert, Diana Tichy, Manuel Wiesenfarth, Frederik B Laun, Klaus H Maier-Hein, Heinz-Peter Schlemmer, David Bonekamp
PURPOSE: To assess radiomics as a tool to determine how well lesions found suspicious on breast cancer screening X-ray mammography can be categorized into malignant and benign with unenhanced magnetic resonance (MR) mammography with diffusion-weighted imaging and T2 -weighted sequences. MATERIALS AND METHODS: From an asymptomatic screening cohort, 50 women with mammographically suspicious findings were examined with contrast-enhanced breast MRI (ceMRI) at 1.5T. Out of this protocol an unenhanced, abbreviated diffusion-weighted imaging protocol (ueMRI) including T2 -weighted, (T2 w), diffusion-weighted imaging (DWI), and DWI with background suppression (DWIBS) sequences and corresponding apparent diffusion coefficient (ADC) maps were extracted...
February 2, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28150325/accuracy-of-contrast-enhanced-ultrasound-compared-with-magnetic-resonance-imaging-in-assessing-the-tumor-response-after-neoadjuvant-chemotherapy-for-breast-cancer
#8
Sandy C Lee, Edward Grant, Pulin Sheth, Agustin A Garcia, Bhushan Desai, Lingyun Ji, Susan Groshen, Darryl Hwang, Mary Yamashita, Linda Hovanessian-Larsen
OBJECTIVES: This pilot study compared contrast enhanced ultrasound (US) with contrast-enhanced magnetic resonance imaging (MRI) in assessing the treatment response in patients with breast cancer receiving preoperative neoadjuvant chemotherapy (NAC). METHODS: This prospective Institutional Review Board-approved and Health Insurance Portability and Accountability Act-compliant study included 30 patients, from January 2014 to October 2015, with invasive breast cancer detected by mammography, conventional US imaging, or both and scheduled for NAC...
February 2, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28149923/investigation-of-x-ray-spectra-for-iodinated-contrast-enhanced-dedicated-breast-ct
#9
Stephen J Glick, Andrey Makeev
Screening for breast cancer with mammography has been very successful, resulting in part to a reduction of breast cancer mortality by approximately 39% since 1990. However, mammography still has limitations in performance, especially for women with dense breast tissue. Iodinated contrast-enhanced, dedicated breast CT (BCT) has been proposed to improve lesion analysis and the accuracy of diagnostic workup for patients suspected of having breast cancer. A mathematical analysis to explore the use of various x-ray filters for iodinated contrast-enhanced BCT is presented...
January 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28112559/breast-radiation-dose-with-cesm-compared-with-2d-ffdm-and-3d-tomosynthesis-mammography
#10
COMPARATIVE STUDY
Judy R James, William Pavlicek, James A Hanson, Thomas F Boltz, Bhavika K Patel
OBJECTIVE: We aimed to compare radiation dose received during contrast-enhanced spectral mammography (CESM) using high- and low-energy projections with radiation dose received during 2D full field digital mammography (FFDM) and 3D tomosynthesis on phantoms and patients with varying breast thickness and density. MATERIALS AND METHODS: A single left craniocaudal projection was chosen to determine the doses for 6214 patients who underwent 2D FFDM, 3662 patients who underwent 3D tomosynthesis, and 173 patients who underwent CESM in this retrospective study...
February 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28107737/contrast-enhanced-spectral-mammography-cesm-versus-mri-in-the-high-risk-screening-setting-patient-preferences-and-attitudes
#11
Jordana Phillips, Matthew M Miller, Tejas S Mehta, Valerie Fein-Zachary, Audrey Nathanson, Wendy Hori, Rita Monahan-Earley, Priscilla J Slanetz
PURPOSE: Our study evaluates patient preferences toward screening CESM versus MRI. MATERIALS AND METHODS: As part of a prospective study, high-risk patients had breast MRI and CESM. Patients completed an anonymous survey to evaluate preferences regarding the two modalities. RESULTS: 88% of participants completed the survey. 79% preferred CESM over MRI if the exams had equal sensitivity. 89% would be comfortable receiving contrast as part of an annual screening test...
March 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28055247/staging-of-breast-cancer-and-the-advanced-applications-of-digital-mammogram-what-the-physician-needs-to-know
#12
Maha H Helal, Sahar M Mansour, Mai Zaglol, Lamia A Salaleldin, Omniya M Nada, Marwa A Haggag
OBJECTIVE: To study the role of advanced applications of digital mammogram, whether contrast-enhanced spectral mammography (CESM) or digital breast tomosynthesis (DBT), in the "T" staging of histologically proven breast cancer before planning for treatment management. METHODS: In this prospective analysis, we evaluated 98 proved malignant breast masses regarding their size, multiplicity and the presence of associated clusters of microcalcifications. Evaluation methods included digital mammography (DM), 3D tomosynthesis and CESM...
March 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28047752/we-de-207b-04-quantitative-contrast-enhanced-spectral-mammography-based-on-photon-counting-detectors-a-feasibility-study
#13
H Ding, B Zhou, D Beidokhti, S Molloi
PURPOSE: To investigate the feasibility of accurate quantification of iodine mass thickness in contrast-enhanced spectral mammography. METHODS: Experimental phantom studies were performed on a spectral mammography system based on Si strip photon-counting detectors. Dual-energy images were acquired using 40 kVp and a splitting energy of 34 keV with 3 mm Al pre-filtration. The initial calibration was done with glandular and adipose tissue equivalent phantoms of uniform thicknesses and iodine disk phantoms of various concentrations...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047365/mo-fg-campus-iep1-01-alternative-k-edge-filters-for-low-energy-image-acquisition-in-contrast-enhanced-spectral-mammography
#14
S Shrestha, S Vedantham, A Karellas
PURPOSE: In Contrast Enhanced Spectral Mammography (CESM), Rh filter is often used during low-energy image acquisition. The potential for using Ag, In and Sn filters, which exhibit K-edge closer to, and just below that of Iodine, instead of the Rh filter, was investigated for the low-energy image acquisition. METHODS: Analytical computations of the half-value thickness (HVT) and the photon fluence per mAs (photons/mm2/mAs) for 50µm Rh were compared with other potential K-edge filters (Ag, In and Sn), all with K-absorption edge below that of Iodine...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046981/we-de-207b-01-optimization-for-contrast-enhanced-spectral-mammography-based-on-photon-counting-detectors
#15
H Ding, S Molloi
PURPOSE: To investigate the feasibility of optimizing the imaging parameters for contrast-enhanced spectral mammography based on Si strip photon-counting detectors. METHODS: A computer simulation model using polyenergetic spectra from a tungsten anode x-ray tube and a Si-based photon-counting detector was evaluated for contrast-enhanced spectral mammography. The simulation traces the emission of photons from the x-ray source, attenuation through the breast and subsequent absorption in the detector...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046698/mo-fg-campus-iep1-02-dose-reduction-in-contrast-enhanced-digital-mammography-using-a-photon-counting-detector
#16
S Lee, S Kang, J Eom
PURPOSE: Photon-counting detectors (PCDs) allow multi-energy X-ray imaging without additional exposures and spectral overlap. This capability results in the improvement of accuracy of material decomposition for dual-energy X-ray imaging and the reduction of radiation dose. In this study, the PCD-based contrast-enhanced dual-energy mammography (CEDM) was compared with the conventional CDEM in terms of radiation dose, image quality and accuracy of material decomposition. METHODS: A dual-energy model was designed by using Beer-Lambert's law and rational inverse fitting function for decomposing materials from a polychromatic X-ray source...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28044312/optimization-of-contrast-enhanced-breast-imaging-analysis-using-a-cascaded-linear-system-model
#17
Yue-Houng Hu, David A Scaduto, Wei Zhao
PURPOSE: Contrast-enhanced (CE) breast imaging involves the injection contrast agents (i.e., iodine) to increase conspicuity of malignant lesions. CE imaging may be used in conjunction with digital mammography (DM) or digital breast tomosynthesis (DBT) and has shown promise in improving diagnostic specificity. Both CE-DM and CE-DBT techniques require optimization as clinical diagnostic tools. Physical factors including x-ray spectra, subtraction technique, and the signal from iodine contrast, must be considered to provide the greatest object detectability and image quality...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/27981485/-1-h-mr-spectroscopy-of-suspicious-breast-mass-lesions-at-3t-a-clinical-experience
#18
Stefania Montemezzi, Carlo Cavedon, Lucia Camera, Gabriele Meliadò, Francesca Caumo, Ilaria Baglio, Francesco Sardanelli
OBJECTIVES: To test 3T proton magnetic resonance spectroscopy ((1)H-MRS) for breast mass lesions. METHODS: Patients with BI-RADS 4-5 lesions at mammography/ultrasound were prospectively enrolled. After contrast-enhanced breast MRI, single-voxel MRS (point-resolved volume selection, PRESS); pencil-beam shimming; volume of interest 1 cm(3); TR/TE = 3000/135 ms) was performed. Spectra were considered reliable if the full width at half maximum (FWHM) of the water peak was ≤45 Hz...
March 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/27955878/prevalence-and-predictive-value-of-bi-rads-3-4-and-5-lesions-detected-on-breast-mri-correlation-with-study-indication
#19
Sona A Chikarmane, Ryan Tai, Jack E Meyer, Catherine S Giess
RATIONALE AND OBJECTIVES: This study aims to determine the prevalence and predictive value of Breast Imaging Reporting and Data System (BI-RADS) 3, 4, and 5 findings on breast magnetic resonance imaging (MRI) and to evaluate the impact of study indication on the predictive value of BI-RADS categories. MATERIALS AND METHODS: This institutional review board approved, Health Insurance Portability and Accountability Act (HIPAA) compliant retrospective review of our breast MRI database from 2009 to 2011, of 5778 contrast-enhanced studies in 3360 patients was performed...
December 7, 2016: Academic Radiology
https://www.readbyqxmd.com/read/27901596/magnetic-resonance-imaging-in-the-pre-surgical-staging-of-breast-cancer-our-experience
#20
Paola Rabasco, Rocchina Caivano, Giuseppina Dinardo, Matilde Gioioso, Antonella Lotumolo, Giancarlo Iannelli, Antonio Villonio, Giuseppe La Torre, Stefano D'Errico, Luca Macarini, Giuseppe Guglielmi, Aldo Cammarota
PURPOSE: To investigate the clinical impact of magnetic resonance imaging (MRI) in the detection of multifocal-multicentric breast cancers, already identified by mammography and ultrasound, and analyzed histologically, to evaluate its role in preoperative staging. MATERIALS AND METHODS: From January 2012 to February 2014, 188 patients, aged 28 to 74 years, newly diagnosed with breast cancer on conventional imaging (mammography and ultrasound) were enrolled. They underwent preoperative contrast-enhanced 3T MRI...
January 2, 2017: Cancer Investigation
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