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https://www.readbyqxmd.com/read/29462366/physical-characterisation-of-four-different-commercial-digital-breast-tomosynthesis-systems
#1
O Ortenzia, R Rossi, M Bertolini, A Nitrosi, C Ghetti
The aim of this article was to characterise the performance of four different digital breast tomosynthesis (DBT) systems in terms of dose and image quality parameters. One of them, GE Pristina, has never been tested before. Average glandular doses were measured both in DBT and 2D full field digital mammography mode. Several phantoms were employed to perform signal difference to noise ratio, slice sensitivity profile, slice to slice incrementation, chest wall offset, z-axis geometry, artefact spread function, low contrast detectability, contrast detail evaluations, image uniformity and in-plane MTF in chest wall-nipple and in tube-travel directions...
February 15, 2018: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/29460074/the-role-of-breast-tomosynthesis-in-a-predominantly-dense-breast-population-at-a-tertiary-breast-centre-breast-density-assessment-and-diagnostic-performance-in-comparison-with-mri
#2
Daniel Förnvik, Masako Kataoka, Mami Iima, Akane Ohashi, Shotaro Kanao, Masakazu Toi, Kaori Togashi
OBJECTIVES: To compare breast density measured on digital breast tomosynthesis (DBT) (BI-RADS-based breast composition and fully-automatic estimation) and magnetic resonance imaging (MRI) (BI-RADS amount of fibroglandular tissue), and to evaluate the diagnostic performance in terms of sensitivity and specificity of DBT and MRI in a predominantly dense breast population. METHODS: Between 2015 and 2016, 152 women with 103 breast malignancies, who underwent 3-T breast MRI and DBT within 2 months' time, were enrolled in this study...
February 19, 2018: European Radiology
https://www.readbyqxmd.com/read/29458952/post-vacuum-assisted-stereotactic-core-biopsy-clip-displacement-a-comparison-between-commercially-available-clips-and-surgical-clip
#3
Peggy Yen, Sandra Dumas, Arianne Albert, Paula Gordon
PURPOSE: The placement of localization clips following percutaneous biopsy is a standard practice for a variety of situations. Subsequent clip displacement creates challenges for imaging surveillance and surgical planning, and may cause confusion amongst radiologists and between surgeons and radiologists. Many causes have been attributed for this phenomenon including the commonly accepted "accordion effect." Herein, we investigate the performance of a low cost surgical clip system against 4 commercially available clips...
February 2018: Canadian Association of Radiologists Journal, Journal L'Association Canadienne des Radiologistes
https://www.readbyqxmd.com/read/29451022/breast-tomosynthesis-for-the-clarification-of-mammographic-bi-rads-3-lesions-can-decrease-follow-up-examinations-and-enables-immediate-cancer-diagnosis
#4
Sonja D Bahrs, Vanessa Otto, Valerie Hattermann, Bernhard Klumpp, Markus Hahn, Konstantin Nikolaou, Katja Siegmann-Luz
Background The limited sensitivity of mammography in case of a high breast density often produces unclear or false-positive findings, so-called BI-RADS 3 lesions, which have to be followed up to prove benignity. Digital breast tomosynthesis (DBT) was developed to reduce such summation effects. Purpose To evaluate the influence of an additional DBT on the management of mammographic BI-RADS 3 findings and whether DBT can decrease the time to definitive diagnosis or not. Material and Methods We analyzed 87 patients with a mammographic non-calcified BI-RADS 3 lesion who underwent an additional DBT of the affected breast...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29434761/the-value-of-x-ray-digital-tomosynthesis-in-the-diagnosis-of-urinary-calculi
#5
Shifeng Liu, Hong Wang, Weihua Feng, Xiaokun Hu, Jian Guo, Qingjun Shang, Zixiang Li, Hongsheng Yu
Urinary calculus is a common and recurrent condition that affects kidney function. The present study evaluated the use of digital tomosynthesis (DTS) and Kidneys-Ureters-Bladder (KUB) radiography as methods of diagnosing urinary calculi. Unenhanced multidetector computed tomography (UMDCT) was used in the diagnosis of calculi. KUB radiography and DTS procedures were conducted on patients prior to and following bowel preparation to detect kidney, ureteral and bladder calculi. Differences in diagnostic performance of KUB radiography and DTS imaging on prepared and unprepared bowel were evaluated using the χ2 test...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29430472/phantom-based-study-exploring-the-effects-of-different-scatter-correction-approaches-on-the-reconstructed-images-generated-by-contrast-enhanced-stationary-digital-breast-tomosynthesis
#6
Connor Puett, Christina Inscoe, Yueh Z Lee, Otto Zhou, Jianping Lu
Stationary digital breast tomosynthesis (sDBT) is an emerging technology in which the single rotating x-ray tube is replaced by a fixed array of multiple carbon nanotube-enabled sources, providing a higher spatial and temporal resolution. As such, sDBT offers a promising platform for contrast-enhanced (CE) imaging. However, given the minimal enhancement above background with standard operational tube settings and iodine dosing, CE breast imaging requires additional acquisition steps to isolate the iodine signal, using either temporal or dual energy subtraction (TS or DES) protocols...
January 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29429017/performance-of-breast-cancer-screening-using-digital-breast-tomosynthesis-results-from-the-prospective-population-based-oslo-tomosynthesis-screening-trial
#7
Per Skaane, Sofie Sebuødegård, Andriy I Bandos, David Gur, Bjørn Helge Østerås, Randi Gullien, Solveig Hofvind
PURPOSE: Digital breast tomosynthesis (DBT) has the potential to overcome limitations of conventional mammography. This study investigated the effects of addition of DBT on interval and detected cancers in population-based screening. METHODS: Oslo Tomosynthesis Screening Trial (OTST) was a prospective, independent double-reading trial inviting women 50-69 years biennially, comparing full-field digital mammography (FFDM) plus DBT with FFDM alone. Performance indicators and characteristics of screen-detected and interval cancers were compared with two previous FFDM rounds...
February 10, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29427198/can-the-synthetic-c-view-images-be-used-in-isolation-for-diagnosing-breast-malignancy-without-reviewing-the-entire-digital-breast-tomosynthesis-data-set
#8
Mark C Murphy, Louise Coffey, Ailbhe C O'Neill, Cecily Quinn, Ruth Prichard, Sorcha McNally
AIMS AND OBJECTIVES: The aim of this study was to determine if the synthetic C view acquired at digital breast tomosynthesis (DBT) would give adequate information to confirm a malignancy and could obviate the need to review all the tomosynthesis image data set. METHODS: All patients with biopsy-proven breast cancer recalled from screening mammograms between May and September 2016 were included for review. For each patient, the screening 2D mammogram, the synthetic C view, and the DBT images were reviewed by three breast radiologists and each assigned a BIRADS code...
February 9, 2018: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/29426360/not-all-false-positive-diagnoses-are-equal-on-the-prognostic-implications-of-false-positive-diagnoses-made-in-breast-mri-versus-in-mammography-digital-tomosynthesis-screening
#9
Christiane K Kuhl, Annika Keulers, Kevin Strobel, Hannah Schneider, Nadine Gaisa, Simone Schrading
BACKGROUND: Breast magnetic resonance imaging (MRI) has been reported to frequently result in false-positive diagnoses, limiting its positive predictive value (PPV). However, for PPV calculation, all nonmalignant tissue changes are equally considered false-positive, although the respective prognostic importance, and thus patient management implications, of different pathologies may well differ. We investigated the pathology of false-positive diagnoses made by MRI compared with radiographic (digital mammography/tomosynthesis [DM/DBT]) screening...
February 9, 2018: Breast Cancer Research: BCR
https://www.readbyqxmd.com/read/29415806/role-of-tomosynthesis-in-breast-imaging-going-forward
#10
REVIEW
M J Michell, B Batohi
Digital breast tomosynthesis (DBT) is a modified mammographic technique that overcomes some of the limitations of full-field digital mammography (2DDM) by eliminating the effect of overlapping breast tissue. In the UK, DBT is utilised in both the symptomatic setting and in breast screening assessment clinics. A literature search was conducted from 2010-2017 to ensure that the most recent developments in DBT technology, clinical applications, and assessment of its usefulness in breast screening were reviewed...
February 5, 2018: Clinical Radiology
https://www.readbyqxmd.com/read/29413851/abstract-id-176-geant4-implementation-of-inter-atomic-interference-effect-in-small-angle-coherent-x-ray-scattering-for-materials-of-medical-interest
#11
Gianfranco Paternò, Paolo Cardarelli, Adriano Contillo, Mauro Gambaccini, Angelo Taibi
Advanced applications of digital mammography such as dual-energy and tomosynthesis require multiple exposures and thus deliver higher dose compared to standard mammograms. A straightforward manner to reduce patient dose without affecting image quality would be removal of the anti-scatter grid, provided that the involved reconstruction algorithms are able to take the scatter figure into account [1]. Monte Carlo simulations are very well suited for the calculation of X-ray scatter distribution and can be used to integrate such information within the reconstruction software...
January 2018: Physica Medica: PM
https://www.readbyqxmd.com/read/29410346/pathologic-upgrade-rates-of-high-risk-breast-lesions-on-digital-2-dimensional-vs-tomosynthesis-mammography
#12
Leslie R Lamb, Manisha Bahl, Kevin S Hughes, Constance D Lehman
BACKGROUND: To compare the pathologic upgrade rates of high-risk breast lesions (HRLs) on digital 2D mammography (DM) versus digital breast tomosynthesis (DBT). STUDY DESIGN: The study cohort was composed of patients with HRLs diagnosed by image-guided core needle biopsy from December 2007 to February 2011 (DM group, before DBT integration) and from January 2013 to March 2016 (DBT group, after complete DBT integration). Medical records were reviewed for surgical outcomes and follow-up imaging...
February 1, 2018: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/29395801/synthesized-mammography-the-new-standard-of-care-when-screening-for-breast-cancer-with-digital-breast-tomosynthesis
#13
Emily B Ambinder, Susan C Harvey, Babita Panigrahi, Ximin Li, Ryan W Woods
RATIONALE AND OBJECTIVES: This study aims to evaluate the screening performance of digital breast tomosynthesis (DBT) combined with synthesized mammography (SM) vs combined with full-field digital mammography (FFDM). MATERIALS AND METHODS: We retrospectively reviewed all screening studies utilizing FFDM + DBT (n = 7845) and SM + DBT (n = 14,776) between April 1, 2013, and February 15, 2016. Recall rate, biopsy rate, positive predictive value 1 (PPV1), positive predictive value 3 (PPV3), and cancer detection rate (CDR) were compared between the two groups...
January 25, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29390228/multiple-angulated-mammography-reconstructions-in-digital-breast-tomosynthesis-for-the-diagnosis-of-microcalcifications-added-value-to-standard-stack-reconstructions-and-synthesized-mammography
#14
Jakob Neubauer, Claudia Neubauer, Julia Wicklein, Thomas Mertelmeier, Marisa Windfuhr-Blum, Mathias Langer
PURPOSE:  To compare ratings regarding the depiction, diagnostic accuracy and lesion characterization of conventional synthesized mammography (SM), multiple angulated mammography reconstructions (INSIGHT3D), and standard stack reconstructions in digital breast tomosynthesis for microcalcifications. MATERIALS AND METHODS:  This is a retrospective, multicase, multireader study. We included patients with digital breast tomosynthesis (DBT), microcalcifications and histology over a period of four months in our institution and the same number of normal cases...
February 1, 2018: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/29376838/model-observer-for-assessing-digital-breast-tomosynthesis-for-multi-lesion-detection-in-the-presence-of-anatomical-noise
#15
Gezheng Wen, Mia K Markey, Tamara Miner Haygood, Subok Park
Model observers are widely used in task-based assessments of medical image quality. The presence of multiple abnormalities in a single set of images, such as in multifocal multicentric breast cancer (MFMC), has an immense clinical impact on treatment planning and survival outcomes. Detecting multiple breast tumors is challenging as MFMC is relatively uncommon, and human observers do not know the number or locations of tumors a priori. Digital breast tomosynthesis (DBT), in which an x-ray beam sweeps over a limited angular range across the breast, has the potential to improve the detection of multiple tumors...
January 29, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29376103/virtual-assessment-of-stereoscopic-viewing-of-digital-breast-tomosynthesis-projection-images
#16
Gezheng Wen, Ho-Chang Chang, Jacob Reinhold, Joseph Y Lo, Mia K Markey
Digital breast tomosynthesis (DBT) acquires a series of projection images from different angles as an x-ray source rotates around the breast. Such imaging geometry lends DBT naturally to stereoscopic viewing as two projection images with a reasonable separation angle can easily form a stereo pair. This simulation study assessed the efficacy of stereo viewing of DBT projection images. Three-dimensional computational breast phantoms with realistically shaped synthetic lesions were scanned by three simulated DBT systems...
January 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29375894/screening-detected-desmoid-tumor-of-the-breast-findings-at-conventional-imaging-and-digital-breast-tomosynthesis
#17
Tatjana Samardzic, Jon Lømo, Per Skaane
Desmoid tumor of the breast is a rare benign entity that usually is mistaken for carcinoma clinically and radiologically. We report two cases of desmoid tumor of the breast detected by mammography screening using digital breast tomosynthesis (DBT). The larger tumor was detected at both full-field digital mammography (FFDM) and DBT. The smaller desmoid tumor, however, was identified only at tomosynthesis. Mammographic and ultrasonographic findings at diagnostic work-up were consistent with carcinoma of the breast...
January 2018: Acta Radiologica Open
https://www.readbyqxmd.com/read/29370106/preliminary-results-of-a-new-auxiliary-mechatronic-near-field-radar-system-to-3d-mammography-for-early-detection-of-breast-cancer
#18
Ashkan Ghanbarzadeh Dagheyan, Ali Molaei, Richard Obermeier, Andrew Westwood, Aida Martinez, Jose Angel Martinez Lorenzo
Accurate and early detection of breast cancer is of high importance, as it is directly associated with the patients' overall well-being during treatment and their chances of survival. Uncertainties in current breast imaging methods can potentially cause two main problems: (1) missing newly formed or small tumors; and (2) false alarms, which could be a source of stress for patients. A recent study at the Massachusetts General Hospital (MGH) indicates that using Digital Breast Tomosynthesis (DBT) can reduce the number of false alarms, when compared to conventional mammography...
January 25, 2018: Sensors
https://www.readbyqxmd.com/read/29366729/accuracy-of-digital-tomosynthesis-with-metal-artifact-reduction-for-detecting-osteointegration-in-cementless-hip-arthroplasty
#19
Shengjie Guo, Hao Tang, Yixin Zhou, Yong Huang, Hongyi Shao, Dejin Yang
BACKGROUND: Cementless hip arthroplasty is increasingly gaining popularity worldwide. Radiologic identification of osteointegration is key to confirming biologic fixation. We conducted the study reported here to determine the sensitivity and specificity of digital tomosynthesis with metal artifact reduction (TMAR), radiography, and conventional computed tomography in detecting osteointegration in cementless hip arthroplasty. METHODS: We prospectively included data for 24 patients who underwent revision hip arthroplasty in our hospital, with 13 femoral and 14 acetabular cementless components retrieved that contained solid evidence of biologic fixation...
December 29, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29355405/additional-roles-of-tomosynthesis-in-breast-imaging-guided-biopsies
#20
Benoît Mesurolle, Armelle Travade, Christine Bagard, Camille Monghal
No abstract text is available yet for this article.
February 2018: AJR. American Journal of Roentgenology
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