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https://www.readbyqxmd.com/read/28535623/-the-breast-cancer-diagnosis-accuracy-of-the-digital-breast-tomosynthesis-technique
#1
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/28525881/preparation-of-mesoporous-cs-pom-mof-199-mcm-41-under-two-different-synthetic-methods-for-a-highly-oxidesulfurization-of-dibenzothiophene
#2
Si-Wen Li, Jia-Rong Li, Qi-Ping Jin, Zhi Yang, Rong-Lan Zhang, Rui-Min Gao, Jian-She Zhao
Two different synthetic methods, the direct method and the substitution method, were used to synthesize the Cs-POM@MOF-199@MCM-41 (Cs-PMM), in which the modified heteropolyacid with cesium salt has been encapsulated into the pores with the mixture of MOF and MCM-41. The structural properties of the as-prepared catalysts were characterized using various analytical techniques: powder X-ray diffraction, FT-IR, SEM, TEM, XPS and BET, confirming that the Cs-POM active species retained its Keggin structure after immobilization...
April 15, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28516226/benefit-of-adding-digital-breast-tomosynthesis-to-digital-mammography-for-breast-cancer-screening-focused-on-cancer-characteristics-a-meta-analysis
#3
REVIEW
Seong Jong Yun, Chang-Woo Ryu, Sun Jung Rhee, Jung Kyu Ryu, Ji Young Oh
PURPOSE: We evaluated the benefit of adding digital breast tomosynthesis (DBT) to full-field digital mammography (FFDM) compared to FFDM alone for breast cancer detection, focusing on cancer characteristics. METHODS: We searched electronic databases and relevant references for published studies comparing DBT plus FFDM to FFDM alone for breast cancer screening. Pooled risk ratios (RRs) for various pathologic findings were determined using random effects models. RESULTS: Eleven eligible studies were included...
May 18, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28480806/mechanisms-of-change-in-dialectical-behaviour-therapy-and-cognitive-behaviour-therapy-for-borderline-personality-disorder-a-critical-review-of-the-literature
#4
Susie Rudge, Janet Denise Feigenbaum, Peter Fonagy
BACKGROUND: Little is known about the "active ingredients" of psychological therapy for Borderline Personality Disorder (BPD) despite a growing evidence base documenting its clinical effectiveness. This information can be used by clinicians to inform service planning and care pathways. AIMS: The aim of this study was to review published empirical research investigating the potential mechanisms underlying therapeutic change in Dialectical Behaviour Therapy (DBT) and Cognitive Behaviour Therapy (CBT) for BPD...
May 8, 2017: Journal of Mental Health
https://www.readbyqxmd.com/read/28473070/acr-appropriateness-criteria-%C3%A2-evaluation-of-nipple-discharge
#5
Su-Ju Lee, Sunita Trikha, Linda Moy, Paul Baron, Roberta M diFlorio, Edward D Green, Samantha L Heller, Anna I Holbrook, Alana A Lewin, Ana P Lourenco, Bethany L Niell, Priscilla J Slanetz, Ashley R Stuckey, Nina S Vincoff, Susan P Weinstein, Monica M Yepes, Mary S Newell
Appropriate imaging evaluation of nipple discharge depends the nature of the discharge. Imaging is not indicated for women with physiologic nipple discharge. For evaluation of pathologic nipple discharge, multiple breast imaging modalities are rated for evidence-based appropriateness under various scenarios. For women age 40 or older, mammography or digital breast tomosynthesis (DBT) should be the initial examination. Ultrasound is usually added as a complementary examination, with some exceptions. For women age 30 to 39, either mammogram or ultrasound may be used as the initial examination on the basis of institutional preference...
May 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28469438/visualization-of-breast-microcalcifications-on-digital-breast-tomosynthesis-and-2-dimensional-digital-mammography-using-specimens
#6
Jieun Byun, Jee Eun Lee, Eun Suk Cha, Jin Chung, Jeoung Hyun Kim
PURPOSE: The purpose of this study is to compare the visibility of microcalcifications of digital breast tomosynthesis (DBT) and full-field digital mammography (FFDM) using breast specimens. MATERIALS AND METHODS: Thirty-one specimens' DBT and FFDM were retrospectively reviewed by four readers. RESULTS: The image quality of microcalcifications of DBT was rated as superior or equivalent in 71.0% by reader 1, 67.8% by reader 2, 64.5% by reader 3, and 80...
2017: Breast Cancer: Basic and Clinical Research
https://www.readbyqxmd.com/read/28467608/gallium-modified-husy-zeolite-as-an-effective-cosupport-for-nimo-hydrodesulfurization-catalyst-and-the-catalyst-s-high-isomerization-selectivity
#7
Wenwu Zhou, Yasong Zhou, Qiang Wei, Lin Du, Sijia Ding, Shujiao Jiang, Yanan Zhang, Qing Zhang
The effects of metal-modified acidic cosupports on the HDS activity and isomerization selectivity of highly refractory organosulfur compounds such as 4,6-dimethyldibenzothiophene have been investigated. Y crystals with high Si/Al ratios and small crystallite sizes were successfully synthesized by a new hydrothermal synthesis approach. The synthesized Y crystals were ion-exchanged and stabilized. The prepared samples were then modified with different gallium contents using a impregnation method to adjust their acidity properties, and these modified samples were used as cosupports for NiMo sulfide hydrodesulfurization (HDS) catalysts...
May 3, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28463546/imaging-with-synthesized-2d-mammography-differences-advantages-and-pitfalls-compared-with-digital-mammography
#8
Samantha P Zuckerman, Andrew D A Maidment, Susan P Weinstein, Elizabeth S McDonald, Emily F Conant
OBJECTIVE: Synthesized 2D (s2D) mammography is rapidly replacing digital mammography in breast imaging with digital breast tomosynthesis (DBT) to reduce radiation dose and maintain screening outcomes. We illustrate variations in the appearance of s2D and digital mammograms to aid in implementation of this technology. CONCLUSION: Despite subjective differences in the appearance of s2D and digital mammograms, early outcomes of screening using s2D mammography and DBT are not inferior to those achieved with digital mammography and DBT...
May 2, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28461963/distal-biceps-tendon-injuries-a-clinically-relevant-current-concepts-review
#9
Eduard Alentorn-Geli, Andrew T Assenmacher, Joaquín Sánchez-Sotelo
Distal biceps tendon (DBT) conditions comprise a spectrum of disorders including bicipitoradial bursitis, partial tears, acute and chronic complete tears.In low-demand patients with complete DBT tears, non-operative treatment may be entertained provided the patient understands the potential for residual weakness, particularly in forearm supination.Most acute tears are best treated by primary repair using either single-incision or double-incision techniques with good clinical outcomes.Single-incision techniques may carry a higher risk of nerve-related complications, whereas double-incision techniques have historically been considered to carry a higher risk of heterotopic ossification, particularly if the ulna is exposed...
September 2016: EFORT Open Rev
https://www.readbyqxmd.com/read/28458344/effects-of-astragalus-combined-with-angelica-on-bone-marrow-hematopoiesis-suppression-induced-by-cyclophosphamide-in-mice
#10
Fei Li, Rong Tang, Ling-Bo Chen, Ke-Sheng Zhang, Xiao-Ping Huang, Chang-Qing Deng
Danggui Buxue Tang (DBT), a combination of Astragalus and Angelica at a 5 : 1 ratio, mainly promotes hematopoiesis. However, in the clinic, the combination ratio of Astragalus and Angelica to treat low hematopoietic function is not an absolute 5 : 1 ratio, suggesting that the herbs may promote hematopoiesis better after being combined at a certain range of ratios. The objective of this study is to investigate the effect of different ratio combinations of Astragalus and Angelica on bone marrow hematopoiesis suppression induced by cyclophosphamide (CTX) and to probe the interaction and mechanism of Astragalus combined with Angelica in promoting hematopoiesis...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28443899/the-role-of-sulfur-oxidation-in-controlling-the-electronic-properties-of-sulfur-containing-host-molecules-for-phosphorescent-organic-light-emitting-diodes
#11
E Varathan, V Subramanian
In this study a series of dibenzothiophene (DBT) derivatives having different valence states of sulfur atoms have been reported as host materials for blue phosphorescent organic light-emitting diodes. Their electronic properties have also been thoroughly investigated to develop structure-property relationships which include the consideration of the effect of various oxidation states of the sulfur atom in the core moiety and linking (C-N linkage) of subunits with the core at different positions. The results obtained from the electronic structure calculations highlight that the triplet energy (ET), singlet-triplet energy difference (ΔEST), reorganization energy for the hole and the injection barrier for the electron decrease with an increase in the oxidation state of the sulfur atom in DBT...
May 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28436856/task-based-modeling-of-an-5k-ultra-high-resolution-medical-imaging-system-for-digital-breast-tomosynthesis
#12
Chumin Zhao, Jerzy Kanicki
High-resolution, low noise x-ray detectors based on CMOS active pixel sensor (APS) technology have demonstrated superior imaging performance for digital breast tomosynthesis (DBT). This paper presents a task-based model for a high resolution medical imaging system to evaluate its ability to detect simulated microcalcifications and masses as lesions for breast cancer. Three-dimensional (3D) cascaded system analysis for a 50 μm pixel pitch CMOS APS x-ray detector was integrated with an object task function, a medical imaging display model, and the human eye contrast sensitivity function to calculate the detectability index and area under the ROC curve (AUC)...
April 19, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28430438/controllable-synthesis-of-lindqvist-alkoxopolyoxovanadate-clusters-as-heterogeneous-catalysts-for-sulfoxidation-of-sulfides
#13
Ji-Kun Li, Jing Dong, Chuan-Ping Wei, Song Yang, Ying-Nan Chi, Yan-Qing Xu, Chang-Wen Hu
Six alkoxohexavanadate-based Cu- or Co-POVs [Cu(dpa)(acac)(H2O)]2[V6O13(OMe)6] (1), [Cu(phen)(acac)(MeOH)]2[V6O13(OMe)6] (2), [Co(dpa)(acac)2]2[V6O13(OMe)6]·2MeOH (3), [Co(phen)(acac)2]2[V6O13(OMe)6] (4), [Cu(dpa)(acac)]2[V(IV)2V(V)4O12(OMe)7] (5), and [Cu(dpa)(acac)(MeOH)]2[V(IV)2V(V)4O11(OMe)8] (6) (POV = polyoxovanadate; dpa = 2,2'-dipyridine amine; phen = 1,10-phenanthroline; acac = acetylacetone anion) have been synthesized by controlling the reaction conditions and characterized by single-crystal X-ray diffraction and powder X-ray diffraction analyses, FT-IR spectroscopy, element analyses, and X-ray photoelectron spectroscopy...
April 21, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28417071/twenty-novel-mutations-in-bckdha-bckdhb-and-dbt-genes-in-a-cohort-of-52-saudi-arabian-patients-with-maple-syrup-urine-disease
#14
Faiqa Imtiaz, Abeer Al-Mostafa, Rabab Allam, Khushnooda Ramzan, Nada Al-Tassan, Asma I Tahir, Nouf S Al-Numair, Mohamed H Al-Hamed, Zuhair Al-Hassnan, Mohammad Al-Owain, Hamad Al-Zaidan, Mohammad Al-Amoudi, Alya Qari, Ameera Balobaid, Moeenaldeen Al-Sayed
Maple syrup urine disease (MSUD), an autosomal recessive inborn error of metabolism due to defects in the branched-chain α-ketoacid dehydrogenase (BCKD) complex, is commonly observed among other inherited metabolic disorders in the kingdom of Saudi Arabia. This report presents the results of mutation analysis of three of the four genes encoding the BCKD complex in 52 biochemically diagnosed MSUD patients originating from Saudi Arabia. The 25 mutations (20 novel) detected spanned across the entire coding regions of the BCKHDA, BCKDHB and DBT genes...
June 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/28411676/synthesized-digital-mammography-imaging
#15
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
#16
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
#17
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/28409416/tributyltin-bioaccumulation-and-toxic-effects-in-freshwater-gastropods-pomacea-canaliculata-after-a-chronic-exposure-field-and-laboratory-studies
#18
María L Martínez, María N Piol, Norma Sbarbati Nudelman, Noemí R Verrengia Guerrero
Freshwater samples and gastropod mollusks (Pomacea canaliculata) were collected at 5 sampling stations located along the lower Río de la Plata basin, Argentina, to assess the extent of tributyltin (TBT) contamination. Determined data revealed the presence of TBT and some of its breakdown products (dibutyltin: DBT, and monobutyltin: MBT) in all freshwater samples and also in soft tissues of P. canaliculata gastropods. Chronic bioassays (6 months) were performed using female gastropods that had been reared under laboratory conditions and exposed to a similar TBT concentration than the value determined in freshwater samples (1 µg L(-1))...
April 13, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/28401255/contaminants-in-liquid-organic-fertilizers-used-for-agriculture-in-japan
#19
Dao M Hai, Xuchun Qiu, Hai Xu, Masato Honda, Mitsuyasu Yabe, Kiwao Kadokami, Yohei Shimasaki, Yuji Oshima
To provide an overview of anthropogenic contaminants in liquid organic fertilizers (LOFs), products from four biogas plants in Kyushu, Japan, were analyzed for a wide range of contaminants, including copper, cadmium, tributyltin (TBT), dibutyltin (DBT), perfluorooctane sulfonate, 952 semi-volatile organic compounds, and 89 antibiotics. The highest concentrations of copper (31.1 mg/L) and cadmium (0.08 mg/L) were found in LOFs from the Hita biogas plant. Only ofloxacin and sulfapyridine were detected in total 89 antibiotics screened...
April 11, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28391808/fully-automated-nipple-detection-in-digital-breast-tomosynthesis
#20
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
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