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Reproductive Imaging

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https://www.readbyqxmd.com/read/28086893/seasonal-variation-in-geographical-access-to-maternal-health-services-in-regions-of-southern-mozambique
#1
Prestige Tatenda Makanga, Nadine Schuurman, Charfudin Sacoor, Helena Edith Boene, Faustino Vilanculo, Marianne Vidler, Laura Magee, Peter von Dadelszen, Esperança Sevene, Khátia Munguambe, Tabassum Firoz
BACKGROUND: Geographic proximity to health facilities is a known determinant of access to maternal care. Methods of quantifying geographical access to care have largely ignored the impact of precipitation and flooding. Further, travel has largely been imagined as unimodal where one transport mode is used for entire journeys to seek care. This study proposes a new approach for modeling potential spatio-temporal access by evaluating the impact of precipitation and floods on access to maternal health services using multiple transport modes, in southern Mozambique...
January 13, 2017: International Journal of Health Geographics
https://www.readbyqxmd.com/read/28079366/the-neonicotinoid-insecticide-thiacloprid-impacts-upon-bumblebee-colony-development-under-field-conditions
#2
Ciaran Ellis, Kirsty J Park, Penelope Whitehorn, Arthur David, Dave Goulson
The impacts of pesticides, and in particular of neonicotinoids, on bee health remain much debated. Many studies describing negative effects have been criticised as the experimental protocol did not perfectly simulate real-life field scenarios. Here, we placed free-flying bumblebee colonies next to raspberry crops that were either untreated or treated with the neonicotinoid thiacloprid as part of normal farming practice. Colonies were exposed to the raspberry crops for a two week period before being relocated to either a flower-rich or flower-poor site...
January 12, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28068573/guidelines-for-reproducing-geometrical-aspects-of-intra-oral-radiographs-images-on-cone-beam-computed-tomography
#3
Janaina Paiva Curi, Thiago Leite Beaini, Ricardo Henrique Alves da Silva, Rodolfo Francisco Haltenhoff Melani, Israel Chilvarquer, Edgard Michel Crosato
Human identification requires comparison of individual traits of a person, depending on the availability and reproduction of antemortem (AM) records. If there is no presumed identity or AM exams are not available for comparison, the production of postmortem (PM) records is impaired. The purpose of this research is to describe and test standards to enable the comparison of antemortem periapical radiographs to images extracted from the manipulation of postmortem CBCT exams in multiple identification simulations in a randomized blind study...
December 22, 2016: Forensic Science International
https://www.readbyqxmd.com/read/28065695/perfusion-of-the-uterine-junctional-zone-in-nulliparous-and-primiparous-women-assessed-by-dce-mri-as-a-function-of-menstrual-cycle-and-hormonal-contraception
#4
L J Meylaerts, L Wijnen, M Bazot, M Grieten, W Ombelet, M Vandersteen
PURPOSE: To evaluate the perfusion parameters of inner and outer myometrium in healthy nulliparous and primiparous women who are and who are not currently using hormonal contraceptives by means of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI). MATERIAL AND METHODS: We performed pelvic 1.5T DCE-MRI on 98 women: 18 nulliparous non-users, 30 nulliparous users, 12 primiparous non-users and 38 primiparous users of hormonal contraception (mean age respectively 26...
January 6, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28064417/the-mmp-9-timp-1-system-is-involved-in-fluoride-induced-reproductive-dysfunctions-in-female-mice
#5
Hong-Wei Wang, Wen-Peng Zhao, Pan-Pan Tan, Jing Liu, Jing Zhao, Bian-Hua Zhou
A total of 84 healthy female mice were kept with various concentrations of sodium fluoride (F) (0, 50, 100, 150 mg F(-)/L in drinking water for 90 days) and were then mated with healthy male mice for 1 week to study the effect of excessive fluoride on female reproductive function, particularly in embryo implantation. The rate of pregnancy, litter size, and the birth weight of female mice were evaluated. Ultrastructural changes of uteri tissues were observed by transmission electron microscopy (TEM). The mRNA expression levels of MMP-9 and TIMP-1 were determined by quantitative real-time PCR...
January 7, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28063909/periprocedural-outcomes-comparing-fibroid-embolization-and-focused-ultrasound-a-randomized-controlled-trial-and-comprehensive-cohort-analysis
#6
Emily P Barnard, Ahmed M AbdElmagied, Lisa E Vaughan, Amy L Weaver, Shannon K Laughlin-Tommaso, Gina K Hesley, David A Woodrum, Vanessa L Jacoby, Maureen P Kohi, Thomas M Price, Angel Nieves, Michael J Miller, Bijan J Borah, Krzysztof R Gorny, Phyllis C Leppert, Lisa G Peterson, Elizabeth A Stewart
BACKGROUND: Uterine fibroids are a common problem for reproductive-aged women, yet little comparative effectiveness research is available to guide treatment choice. Uterine artery embolization and magnetic resonance imaging-guided focused ultrasound surgery are minimally invasive therapies approved by the United States Food and Drug Administration for treating symptomatic uterine fibroids. The Fibroid Interventions: Reducing Symptoms Today and Tomorrow study is the first randomized controlled trial to compare these 2 fibroid treatments...
January 4, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28063264/preimplantation-3d-ultrasound-current-uses-and-challenges
#7
Sushila Arya, Sanja Kupesic Plavsic
The preimplantation ultrasound (US) refers to targeted imaging of the uterus and adnexa prior to assisted reproductive techniques (ART) to optimize the infertility treatment outcomes. After a thorough evidence based literature review, we propose the use of transvaginal three-dimensional (3D) US during the early follicular phase. A systematic approach for 3D US examination consists of a detailed examination of the uterine shape, size and contour, evaluation of the endometrial thickness, volume, pattern and vascularity, and assessment of the junctional zone regularity, echogenicity and thickness...
January 7, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28062752/arabidopsis-seed-mitochondria-are-bioenergetically-active-immediately-upon-imbibition-and-specialize-via-biogenesis-in-preparation-for-autotrophic-growth
#8
Gael Paszkiewicz, Jose Manuel Gualberto, Abdelilah Benamar, David Macherel, David C Logan
Seed germination is a vital developmental transition for production of progeny by sexual reproduction in spermatophytes. Quiescent cells in non-dormant dry embryos are reawakened first by imbibition and then by perception of germination triggers. Reanimated tissues enter into a germination program requiring energy for expansion growth. However, germination requires that embryonic tissues develop to support the more energy-demanding processes of cell division and organogenesis of the new seedling. Reactivation of mitochondria to supply the required energy is thus a key process underpinning germination and seedling survival...
January 6, 2017: Plant Cell
https://www.readbyqxmd.com/read/28062354/comparative-study-of-the-morphology-of-the-female-seminal-receptacles-of-ilia-nucleus-and-persephona-mediterranea-decapoda-brachyura-leucosiidae
#9
Sarah Hayer, Stephanie Köhnk, Christoph D Schubart, Susann Boretius, Stanislav N Gorb, Dirk Brandis
Because of the poor knowledge of the morphology of the female reproductive organs of most brachyuran crabs, this study investigated two Atlantic representatives of the family Leucosiidae, Ilia nucleus (Linnaeus, 1758) and Persephona mediterranea (Herbst, 1794), using histological methods and magnetic resonance imaging (MRI). While the vagina conforms to the concave type, the arrangement of the two chambers of the seminal receptacle differs strongly from that of other eubrachyuran sperm storage organs. Both chambers are oriented laterally within the crab's body...
January 3, 2017: Arthropod Structure & Development
https://www.readbyqxmd.com/read/28059270/spectral-bidirectional-texture-function-reconstruction-by-fusing-multiple-color-and-spectral-images
#10
Wei Dong, Hui-Liang Shen, Xin Du, Si-Jie Shao, John H Xin
Spectral bidirectional texture function (BTF) is essential for accurate reproduction of material appearance due to its nature of conveying both spatial and spectral information. A practical issue is that the acquisition of raw spectral BTFs is time-consuming. To resolve the limitation, this paper proposes a novel framework for efficient spectral BTF acquisition and reconstruction. The framework acquires red-green-blue (RGB) BTF images and just one spectral image. The full spectral BTFs are reconstructed by fusing the RGB and spectral images based on nonnegative matrix factorization (NMF)...
December 20, 2016: Applied Optics
https://www.readbyqxmd.com/read/28059231/improving-color-reproduction-accuracy-of-a-mobile-liquid-crystal-display
#11
Eric Kirchner, Ivo van der Lans, Francisco M Martínez-Verdú, Esther Perales
The default method for color representation on displays involves sRGB as device-independent encoding color space. For improving color reproduction accuracy, we develop a device-specific display characterization model for the Apple iPad Air 2. In separate articles, we will evaluate the same method for other devices and for other display technologies. This model is combined with an easy-to-implement new method to account for the influence of illuminance from ambient light. The combination is called the mobile display characterization and illumination model (MDCIM) for the iPad Air 2, representing modern liquid crystal displays...
January 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/28050959/fertility-preservation-in-endometrial-cancer-is-it-safe-review-of-the-literature
#12
REVIEW
Márcia Mendonça Carneiro, Rívia Mara Lamaita, Márcia Cristina França Ferreira, Agnaldo Lopes Silva-Filho
Almost 5% of women with endometrial cancer are under age 40, and they often have well-differentiated endometrioid estrogen-dependent tumors. Cancer survival rates have improved over the last decades so strategies to avoid or reduce the reproductive damage caused by oncologic treatment are needed. We reviewed the published literature to find evidence to answer the following questions: How should we manage women in reproductive age with endometrial cancer? How safe is fertility preservation in endometrial cancer? Can pregnancy influence endometrial cancer recurrence? What are the fertility sparing options available? Progestins may be prescribed after careful evaluation and counseling...
December 1, 2016: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/28048117/su-f-j-78-characterization-of-deformable-image-registration-for-the-pelvic-region-based-on-prostate-shifting-image-noise-and-the-existence-of-implanted-fiducial-markers
#13
T Ikeda, A Takemura, U Shinichi, H Kojima, K Noto
PURPOSE: To assess the impact of prostate shifting, image noise and the existence of fiducial markers on deformable image registration (DIR) performance in the pelvic region using original digital phantoms. METHODS: A digital phantom of the pelvic region of a prostate cancer patient was created using contoured anatomy as a base image set. Two simulated fiducial markers were implanted at the apex and base of the prostate. With and without markers, the prostate was shifted by 6...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046326/su-f-t-568-qa-of-a-multi-target-multi-dose-vmat-srs
#14
D Roa, A Gonzales, J Kuo
PURPOSE: To, experimentally, corroborated the prescribed doses utilizing dosimeters (e.g. films and TLDs) that can provide high spatial resolution, allow dose measurement of multiple targets at once, and provide accurate dosimetric results. METHODS: A single-isocenter 6FFF SRS VMAT plan consisting of one 358° arc at 0° couch angle and four 179° arcs at 30°, 60°, 330° and 300° couch angles respectively, was generated in ECLIPSE v.11 using a Rando-Alderson anthropomorphic head phantom CT study...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046063/three-dimensional-high-frequency-ultrasonography-for-early-detection-and-characterization-of-embryo-implantation-site-development-in-the-mouse
#15
Mary C Peavey, Corey L Reynolds, Maria M Szwarc, William E Gibbons, Cecilia T Valdes, Francesco J DeMayo, John P Lydon
Ultrasonography is a powerful tool to non-invasively monitor in real time the development of the human fetus in utero. Although genetically engineered mice have served as valuable in vivo models to study both embryo implantation and pregnancy progression, such studies usually require sacrifice of parous mice for subsequent phenotypic analysis. To address this issue, we used three-dimensional (3-D) reconstruction in silico of high-frequency ultrasound (HFUS) imaging data for early detection and characterization of murine embryo implantation sites and their development in utero...
2017: PloS One
https://www.readbyqxmd.com/read/28028464/hairiness-the-missing-link-between-pollinators-and-pollination
#16
Jamie R Stavert, Gustavo Liñán-Cembrano, Jacqueline R Beggs, Brad G Howlett, David E Pattemore, Ignasi Bartomeus
BACKGROUND: Functional traits are the primary biotic component driving organism influence on ecosystem functions; in consequence, traits are widely used in ecological research. However, most animal trait-based studies use easy-to-measure characteristics of species that are at best only weakly associated with functions. Animal-mediated pollination is a key ecosystem function and is likely to be influenced by pollinator traits, but to date no one has identified functional traits that are simple to measure and have good predictive power...
2016: PeerJ
https://www.readbyqxmd.com/read/28027973/the-role-of-imaging-tools-for-the-diagnosis-of-borderline-ovarian-tumors-a-systematic-review-and-meta-analysis
#17
REVIEW
Giuliano Moysés Borrelli, Leandro Accardo de Mattos, Marina de Paula Andres, Manoel Orlando da Costa Gonçalves, Rosanne M Kho, Mauricio Simões Abrão
Borderline ovarian tumors (BOTs) are tumors with low malignant potential that occurs most often in young women. Its preoperative diagnosis can improve surgical strategy and reproductive approach. This study systematically reviews the literature for the accuracy of transvaginal ultrasound (TVUS), magnetic resonance (MRI) and computed tomography (CT) in the diagnostic of borderline ovarian tumors. We conducted a search in Pubmed/Medline of articles in English of the last 5 years and included 14 studies for systematic review and 9 of them in the meta-analysis...
December 24, 2016: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28024676/ageing-and-healthy-sexuality-among-women-living-with-hiv
#18
Manjulaa Narasimhan, Caitlin Payne, Stephanie Caldas, John R Beard, Caitlin E Kennedy
Populations around the world are rapidly ageing and effective treatment for HIV means women living with HIV (WLHIV) can live longer, healthier lives. HIV testing and screening programmes and safer sex initiatives often exclude older sexually active WLHIV. Systematically reviewing the literature to inform World Health Organization guidelines on the sexual and reproductive health and rights (SRHR) of WLHIV, identified four studies examining healthy sexuality among older WLHIV. In Uganda, WLHIV reported lower rates of sexual activity and rated sex as less important than men...
November 2016: Reproductive Health Matters
https://www.readbyqxmd.com/read/28007752/assessment-of-the-uterus-with-three-dimensional-ultrasound-in-women-undergoing-art
#19
REVIEW
Sotirios H Saravelos, Kannamannadiar Jayaprakasan, Kamal Ojha, Tin-Chiu Li
BACKGROUND: A detailed assessment of the uterus forms a pivotal part of the ART treatment process. The emergence of three-dimensional ultrasound (3D US) has provided clinicians with a highly powerful tool in this respect. Assessments with 3D US range from the reconstruction of anatomical planes elusive to conventional US, to the objective measurement of anatomical volumes and vascularization parameters. However, despite the ever increasing number of publications emerging in the literature, the question of which aspects of 3D US are of most clinical value remains a topic of debate...
December 21, 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/28007169/uptake-and-transformation-of-arsenic-during-the-reproductive-life-stage-of-agaricus-bisporus-and-agaricus-campestris
#20
Michelle M Nearing, Iris Koch, Kenneth J Reimer
Fruiting bodies from the Agaricus genus have been found to contain non-toxic arsenobetaine (AB) as a major compound. It is unknown whether AB is formed during the vegetative or reproductive life stages of the fungus, or by the surrounding microbial community, but AB's structural similarity to glycine betaine has led to the hypothesis that AB may be adventitiously accumulated as an osmolyte. To investigate the potential formation of AB during the reproductive life stage of Agaricus species, growth substrate and fungi were collected during the commercial growth of Agaricus bisporus and analyzed for arsenic speciation using HPLC-ICP-MS...
November 2016: Journal of Environmental Sciences (China)
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