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https://www.readbyqxmd.com/read/28429205/comparison-of-digital-tomosynthesis-and-computed-tomography-for-lung-nodule-detection-in-sos-screening-program
#1
Maurizio Grosso, Roberto Priotto, Donatella Ghirardo, Alberto Talenti, Emanuele Roberto, Luca Bertolaccini, Alberto Terzi, Stéphane Chauvie
PURPOSE: To compare the lung nodules' detection of digital tomosynthesis (DTS) and computed tomography (CT) in the context of the SOS (Studio OSservazionale) prospective screening program for lung cancer detection. MATERIALS AND METHODS: One hundred and thirty-two of the 1843 subjects enrolled in the SOS study underwent CT because non-calcified nodules with diameters larger than 5 mm and/or multiple nodules were present in DTS. Two expert radiologists reviewed the exams classifying the nodules based on their radiological appearance and their dimension...
April 20, 2017: La Radiologia Medica
https://www.readbyqxmd.com/read/28411677/breast-density-legislation-and-clinical-evidence
#2
REVIEW
Regina J Hooley
Breast density inform legislation is widely accepted in the United States and has fueled research regarding the clinical significance of dense breast tissue present on mammography and the value of supplemental screening. This article reviews the origins and current status of breast density inform laws and strategies for optimal breast density determination. Clinical evidence that dense breast tissue is associated with increased breast cancer risk is presented, together with a review of relative risk compared with other risk factors...
May 2017: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/28411676/synthesized-digital-mammography-imaging
#3
REVIEW
Phoebe E Freer, Nicole Winkler
Synthesized mammography (SM) is a new imaging technique similar to digital mammography constructed from an acquired digital breast tomosynthesis (DBT) examination. SM allows for widespread screening using DBT, maintaining the benefits of DBT while decreasing the radiation of DBT by nearly half. This article reviews studies evaluating SM, most of which suggest that SM may be appropriate to use clinically to replace an actual acquired conventional 2-dimensional full-field digital mammogram (FFDM) when using DBT for breast cancer screening...
May 2017: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/28411675/breast-tomosynthesis-practical-considerations
#4
REVIEW
Sarah M Friedewald
Digital breast tomosynthesis (DBT) is rapidly becoming the new standard of care for breast cancer screening. DBT has improved on the limitations of traditional digital mammography by increasing cancer detection and decreasing false-positive examinations. Interpretation of DBT is slightly different than digital mammography and therefore experience with the technology is paramount to achieve best performance. Examples of malignancies that should be recalled and benign findings that are safely called as benign are provided in this article...
May 2017: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/28411674/breast-tomosynthesis-clinical-evidence
#5
REVIEW
Steven Poplack
In the last 20 years, there has been rapid evolution of the clinical research on digital breast tomosynthesis supporting its adoption in clinical breast imaging practice. Beginning with proof of principle pilot observational studies and culminating in prospective population-based screening trials and outcome reporting from clinical practice, there is a wealth of data on the DBT technology. This article catalogs the scientific and clinical evidence of DBT, highlighting some of the most important studies that have been reported to date...
May 2017: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/28410682/integrated-digital-tomosynthesis-for-patient-positioning-of-image-guided-radiation-therapy
#6
Hui Yan, Jian-Rong Dai
PURPOSE: Digital Tomosynthesis (DTS), originally developed for diagnostic applications, has been recently introduced to image guided radiotherapy (IGRT). Due to limited scan range, DTS was featured by anisotropic spatial resolution. A new approach, integrated DTS (IDTS), was developed to improve image resolution of DTS for patient positioning in IGRT. MATERIALS AND METHODS: For registration purpose, both on-board IDTS (O-IDTS) and reference IDTS (R-IDTS) were required...
April 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28401174/estimating-scatter-from-sparsely-measured-primary-signal
#7
Gongting Wu, Christina R Inscoe, Jabari Calliste, Jing Shan, Yueh Z Lee, Otto Zhou, Jianping Lu
Scatter radiation severely degrades the image quality. Measurement-based scatter correction methods sample the scatter signal at sparsely distributed points, from which the scatter profile is estimated and deterministically removed from the projection image. The estimation of the scatter profile is generally done through a spline interpolation and the resulting scatter profile is quite smooth. Consequently, the noise is intact and the signal-to-noise ratio is reduced in the projection image after scatter correction, leading to image artifacts and increased noise in the reconstruction images...
January 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28398001/an-update-on-carbon-nanotube-enabled-x-ray-sources-for-biomedical-imaging
#8
REVIEW
Connor Puett, Christina Inscoe, Allison Hartman, Jabari Calliste, Dora K Franceschi, Jianping Lu, Otto Zhou, Yueh Z Lee
A new imaging technology has emerged that uses carbon nanotubes (CNT) as the electron emitter (cathode) for the X-ray tube. Since the performance of the CNT cathode is controlled by simple voltage manipulation, CNT-enabled X-ray sources are ideal for the repetitive imaging steps needed to capture three-dimensional information. As such, they have allowed the development of a gated micro-computed tomography (CT) scanner for small animal research as well as stationary tomosynthesis, an experimental technology for large field-of-view human imaging...
April 11, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/28396003/tomosynthesis-directed-coaxial-core-biopsy-of-tomosynthesis-detected-architectural-distortion-indications-and-logistics
#9
Priscilla J Slanetz, Ann L Brown, Marissa Bradley, E Jane Karimova
No abstract text is available yet for this article.
April 7, 2017: Canadian Association of Radiologists Journal, Journal L'Association Canadienne des Radiologistes
https://www.readbyqxmd.com/read/28391808/fully-automated-nipple-detection-in-digital-breast-tomosynthesis
#10
Seung-Hoon Chae, Ji-Wook Jeong, Jang-Hwan Choi, Eun Young Chae, Hak Hee Kim, Young-Wook Choi, Sooyeul Lee
BACKGROUND AND OBJECTIVE: We propose a nipple detection algorithm for use with digital breast tomosynthesis (DBT) images. DBT images have been developed to overcome the weaknesses of 2D mammograms for denser breasts by providing 3D breast images. The nipple location acts as an invaluable landmark in DBT images for aligning the right and left breasts and describing the relative location of any existing lesions. METHODS: Nipples may be visible or invisible in a breast image, and therefore a nipple detection method must be able to detect the nipples for both cases...
May 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28378409/diffusion-of-digital-breast-tomosynthesis-among-women-in-primary-care-associations-with-insurance-type
#11
Cheryl R Clark, Tor D Tosteson, Anna N A Tosteson, Tracy Onega, Julie E Weiss, Kimberly A Harris, Jennifer S Haas
Digital breast tomosynthesis (DBT) has shown potential to improve breast cancer screening and diagnosis compared to digital mammography (DM). The FDA approved DBT use in conjunction with conventional DM in 2011, but coverage was approved by CMS recently in 2015. Given changes in coverage policies, it is important to monitor diffusion of DBT by insurance type. This study examined DBT trends and estimated associations with insurance type. From June 2011 to September 2014, DBT use in 22 primary care centers in the Dartmouth -Brigham and Women's Hospital Population-based Research Optimizing Screening through Personalized Regimens research center (PROSPR) was examined among women aged 40-89...
April 4, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28377347/-influence-of-projection-data-correction-on-digital-breast-tomosynthesis-imaging
#12
Xin-Yu Zhang, Hua Zhang, Zhao-Ying Bian, Dong Zeng, Ji He, Xiu-Mei Tian, Jian-Hua Ma, Jing Huang
OBJECTIVE: To investigate the effect of detector performance during digital breast tomography (DBT) projection data acquisition on reconstructed image quality. METHODS: With reference to the traditional detector data correction method and the specific data acquisition pattern in DBT imaging, we utilized dark field correction, light field and its gain correction for processing the projection data collected by the detector. The reconstructed images were evaluated using iterative reconstruction method based on total generalized variation (TGV)...
March 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28376261/theoretical-investigation-of-the-noise-performance-of-active-pixel-imaging-arrays-based-on-polycrystalline-silicon-thin-film-transistors
#13
Martin Koniczek, Larry E Antonuk, Youcef El-Mohri, Albert K Liang, Qihua Zhao
PURPOSE: Active matrix flat-panel imagers, which typically incorporate a pixelated array with one a-Si:H thin-film transistor (TFT) per pixel, have become ubiquitous by virtue of many advantages, including large monolithic construction, radiation tolerance and high DQE. However, at low exposures such as those encountered in fluoroscopy, digital breast tomosynthesis and breast computed tomography, DQE is degraded due to the modest average signal generated per interacting x-ray relative to electronic additive noise levels of ~1000 e, or greater...
April 4, 2017: Medical Physics
https://www.readbyqxmd.com/read/28376259/non-radiographic-axial-spondyloarthritis-with-sacroiliitis-detected-by-tomosynthesis
#14
Kurisu Tada, Shigeto Kobayashi, Michihiro Ogasawara, Hisashi Inoue, Ken Yamaji, Naoto Tamura
No abstract text is available yet for this article.
April 4, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28374502/the-role-of-digital-breast-tomosynthesis-in-the-breast-assessment-clinic-a-review
#15
REVIEW
Suneeta Mall, Sarah Lewis, Patrick Brennan, Jennie Noakes, Claudia Mello-Thoms
Mammography has long been considered as the primary technique in breast cancer detection and assessment. Despite low specificity, mammography has been preferred over other contemporary techniques such as magnetic resonance imaging (MRI), computed tomography (CT) and ultrasonography (US) due to superior sensitivity and significant health economic benefits. The development of a new technique, a limited angle cone beam pseudo-three-dimensional tomosynthesis, digital breast tomosynthesis (DBT), has gained momentum...
April 4, 2017: Journal of Medical Radiation Sciences
https://www.readbyqxmd.com/read/28368663/imaging-features-and-conspicuity-of-invasive-lobular-carcinomas-on-digital-breast-tomosynthesis
#16
Foucauld Chamming's, Ellen Kao, Ann Aldis, Romuald Ferré, Atilla Omeroglu, Caroline Reinhold, Benoit Mesurolle
OBJECTIVES: To review the imaging features of invasive lobular carcinoma (ILC) seen on Digital breast tomosynthesis (DBT) in comparison with invasive ductal carcinoma (IDC), and to evaluate whether DBT could improve conspicuity and tumor size assessment of ILC in comparison with digital mammography (DM). METHODS: Institutional review board with waiver of informed consent was obtained for this retrospective study. Patients with ILC or IDC who underwent DBT and DM at the time of diagnosis were included...
April 3, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28343304/geometry-calibration-between-x-ray-source-and-detector-for-tomosynthesis-with-a-portable-x-ray-system
#17
Kohei Sato, Takashi Ohnishi, Masashi Sekine, Hideaki Haneishi
PURPOSE: Tomosynthesis is attracting attention as a low-dose tomography technology compared with X-ray CT. However, conventional tomosynthesis imaging devices are large and stationary. Furthermore, there is a limitation in the working range of the X-ray source during image acquisition. We have previously proposed the use of a portable X-ray device for tomosynthesis that can be used for ward rounds and emergency medicine. The weight of this device can be reduced by using a flat panel detector (FPD), and flexibility is realized by the free placement of the X-ray source and FPD...
March 25, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28340518/prevalence-and-distribution-of-sesamoid-bones-in-the-hand-determined-using-digital-tomosynthesis
#18
Bon San Koo, Yoonah Song, Yoon-Kyoung Sung, Seunghun Lee, Jae-Bum Jun
The aim of this study was to identify the prevalence and distribution of sesamoid bones in the hand using digital tomosynthesis (DTS) in comparison to previous studies. Using conventional radiography (CR) and DTS, hand images (81 left and 100 right) taken at a tertiary hospital were retrospectively reviewed. The sesamoid bones were identified in the interphalangeal (IP) and metacarpophalangeal (MCP) joints of the thumb (I), and in the distal interphalangeal (DIP) and metacarpophalangeal (MCP) of index (II), middle (III), ring (IV), and little (V) fingers...
March 24, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28331239/evaluation-of-a-marker-clip-system-in-sonographically-guided-core-needle-biopsy-for-breast-cancer-localization-before-and-after-neoadjuvant-chemotherapy
#19
R Schulz-Wendtland, P Dankerl, M R Bani, P A Fasching, K Heusinger, M P Lux, S M Jud, C Rauh, C M Bayer, M G Schrauder, M W Beckmann, M Uder, B Brehm, C R Loehberg
Introduction The placement of intramammary marker clips has proven to be helpful for tumor localization in patients undergoing neoadjuvant chemotherapy and breast-conserving surgery. The purpose of our study was to investigate the feasibility of using a clip marker system for breast cancer localization and its influence on the imaging assessment of treatment responses after neoadjuvant chemotherapy. Patients and Methods Between March and June 2015, a total of 25 patients (n = 25), with a suspicion of invasive breast cancer with diameters of at least 2 cm (cT2), underwent preoperative sonographically guided core needle biopsy using a single-use breast biopsy system (HistoCore™) and intramammary clip marking using a directly adapted clip system based on the established O-Twist Marker™, before their scheduled preoperative neoadjuvant chemotherapy...
February 2017: Geburtshilfe und Frauenheilkunde
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
#20
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
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