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Reproductive Imaging

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https://www.readbyqxmd.com/read/29134673/modified-dixon-based-renal-dynamic-contrast-enhanced-mri-facilitates-automated-registration-and-perfusion-analysis
#1
Anneloes de Boer, Tim Leiner, Eva E Vink, Peter J Blankestijn, Cornelis A T van den Berg
PURPOSE: Renal dynamic contrast-enhanced (DCE) MRI provides information on renal perfusion and filtration. However, clinical implementation is hampered by challenges in postprocessing as a result of misalignment of the kidneys due to respiration. We propose to perform automated image registration using the fat-only images derived from a modified Dixon reconstruction of a dual-echo acquisition because these provide consistent contrast over the dynamic series. METHODS: DCE data of 10 hypertensive patients was used...
November 13, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29131304/costs-of-reproduction-are-reflected-in-women-s-faces-post-menopausal-women-with-fewer-children-are-perceived-as-more-attractive-healthier-and-younger-than-women-with-more-children
#2
Urszula M Marcinkowska, Anthony C Little, Andrzej Galbarczyk, Ilona Nenko, Magdalena Klimek, Grazyna Jasienska
OBJECTIVES: The costs associated with reproduction (i.e., gestation, lactation, childcare) have long-term negative consequences by elevating risk of disease and reducing lifespan. We tested the hypotheses that high parity, and thus high reproductive costs bear by women, is perceived by other people when they evaluate facial appearance of health, attractiveness and age of mothers. MATERIALS AND METHODS: Using computer software we created average facial images based on real photographs of post-menopausal women with varying number of children; 3 parity categories were created (1-2, 4-5, and 7-9 children)...
November 13, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/29110976/emergency-medicine-myths-ectopic-pregnancy-evaluation-%C3%A2-risk%C3%A2-factors-and-presentation
#3
Jennifer J Robertson, Brit Long, Alex Koyfman
BACKGROUND: Ectopic pregnancy (EP) is an important cause of morbidity and mortality in females of reproductive age. Proper diagnosis and treatment are critical, as complications such as rupture, hemorrhagic shock, and even death can occur. OBJECTIVE: EP is a condition emergency physicians are trained to detect, yet there are multiple myths concerning its evaluation and diagnosis. This article reviews several of these myths in order to improve emergency department (ED) evaluation and diagnosis...
October 27, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29106742/density-weighted-concentric-circle-trajectories-for-high-resolution-brain-magnetic-resonance-spectroscopic-imaging-at-7t
#4
Lukas Hingerl, Wolfgang Bogner, Philipp Moser, Michal Považan, Gilbert Hangel, Eva Heckova, Stephan Gruber, Siegfried Trattnig, Bernhard Strasser
PURPOSE: Full-slice magnetic resonance spectroscopic imaging at ≥7 T is especially vulnerable to lipid contaminations arising from regions close to the skull. This contamination can be mitigated by improving the point spread function via higher spatial resolution sampling and k-space filtering, but this prolongs scan times and reduces the signal-to-noise ratio (SNR) efficiency. Currently applied parallel imaging methods accelerate magnetic resonance spectroscopic imaging scans at 7T, but increase lipid artifacts and lower SNR-efficiency further...
November 6, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29097344/background-parenchymal-enhancement-is-it-just-an-innocent-effect-of-estrogen-on-the-breast
#5
Gözde Arslan, Levent Çelik, Rahmi Çubuk, Levent Çelik, Mehmet Mahir Atasoy
PURPOSE: We aimed to retrospectively analyze whether background parenchymal enhancement (BPE) on breast magnetic resonance imaging (MRI) correlates with menarche, menopause, reproductive period, menstrual cycle, gravidity-parity, family history of breast cancer, and the Breast Imaging-Reporting and Data System (BI-RADS) category of the patient. METHODS: The study included 126 pre- and 78 postmenopausal women who underwent breast MRI in our institute between 2011 and 2016...
November 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/29091136/chagas-disease-ecoepidemiology-and-environmental-changes-in-northern-minas-gerais-state-brazil
#6
Elisa Neves Vianna, Ricardo José de Paula Souza E Guimarães, Christian Rezende Souza, David Gorla, Liléia Diotaiuti
BACKGROUND: Triatoma sordida and Triatoma pseudomaculata are frequently captured triatomine species in the Brazilian savannah and caatinga biomes, respectively, and in Brazilian domiciles. OBJECTIVES: This study identified eco-epidemiological changes in Chagas disease in northern Minas Gerais state, Brazil, and considered the influence of environmental shifts and both natural and anthropogenic effects. METHODS: Domicile infestation and Trypanosoma cruzi infection rates were obtained from triatomines and sylvatic reservoirs during the following two time periods: the 1980s and 2007/2008...
November 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/29082338/a-simple-confocal-microscopy-based-method-for-assessing-sperm-movement
#7
Sung Woo Kim, Min Su Ki, Chan-Lan Kim, In-Sul Hwang, Ik Soo Jeon
In the field of reproductive medicine, assessment of sperm motility is a key factor for achieving successful artificial insemination, in vitro fertilization, or intracellular sperm injection. In this study, the motility of boar sperms was estimated using real-time imaging via confocal microscopy. To confirm this confocal imaging method, flagellar beats and whiplash-like movement angles were compared between fresh and low-temperature-preserved (17℃ for 24 h) porcine sperms. Low-temperature preservation reduced the number of flagellar beats from 11...
September 2017: Balsaeng'gwa Saengsig
https://www.readbyqxmd.com/read/29071375/-influence-of-trauma-mechanisms-on-thoracic-and-lumbar-spinal-fractures
#8
Cornelius Jacobs, Tony Hartwig, Philip P Rößler, Dan Meila, Igor Nikiforov, Milena M Plöger, Christof Burger, Sebastian Scheidt
BACKGROUND: Vertebral body fractures (VBF) can be caused by various trauma mechanisms. The AOSpine classification system differentiates three main types of fractures according to the grade of instability. How the increasing energy of various accident mechanisms changes the complexity of the individual fracture, its localization and the occurrence of further fractures has not yet been finally investigated. OBJECTIVE: What influence do traumatic events with different kinematics have on the localization, complexity and number of VBF in the thoracic and lumbar spine? MATERIAL AND METHODS: In this retrospective study data from patients with a freshly traumatized VBF were analyzed...
October 25, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/29071192/the-biocompatibility-studies-of-polymer-dots-on-pregnant-mice-and-fetuses
#9
Na Wu, Zheng Zhang, Jie Zhou, Zezhou Sun, Yueyue Deng, Guimiao Lin, Ming Ying, Xiaomei Wang, Ken-Tye Yong, Changfeng Wu, Gaixia Xu
Semiconducting polymer dots (Pdots) are small nanoparticles consisting primarily of fluorescent pi-conjugated polymers which show superior optical properties for biological imaging and biosensors. It is necessary to explore systematically the toxicity of Pdots on animals before extensive biomedical applications. The reproductive system is very sensitive to the external invasion and essential for species reproduction as well. In this work, we used the pregnant mice to investigate the reproductive toxicity of Pdots...
2017: Nanotheranostics
https://www.readbyqxmd.com/read/29069495/potential-effects-of-diagnostic-irradiation-from-computed-tomography-on-reproductive-system-and-general-protective-strategies
#10
Daryoush Fatehi, Ayoob Rostamzadeh
Currently, application of computed tomography (CT) increased in the diagnostic procedures. Hence, respecting to the unnecessary increase in the application of the CT-scans, it needs to prescribe radiological procedures from pelvic and lower abdomen with more caution. Furthermore, due to the unnecessary increasing application of CT-scan in the world, we believe that there is a need to revise, with more precision, for prescription of this radiological procedure. The panel recommended several measures to enhance and enforce radiation-dose optimization, particularly in collaboration with referring physicians...
October 24, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/29062292/but-is-it-really-art-the-classification-of-images-as-art-not-art-and-correlation-with-appraisal-and-viewer-interpersonal-differences
#11
Matthew Pelowski, Gernot Gerger, Yasmine Chetouani, Patrick S Markey, Helmut Leder
When an individual participates in empirical studies involving the visual arts, they most often are presented with a stream of images, shown on a computer, depicting reproductions of artworks by respected artists but which are often not known to the viewer. While art can of course be shown in presentia actuale-e.g., in the museum-this laboratory paradigm has become our go-to basis for assessing interaction, and, often in conjunction with some means of rating, for assessing evaluative, emotional, cognitive, and even neurophysiological response...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/29052372/two-layer-heterogeneous-breast-phantom-for-photoacoustic-imaging
#12
Congxian Jia, William C Vogt, Keith A Wear, T Joshua Pfefer, Brian S Garra
Photoacoustic tomography (PAT) is emerging as a potentially important aid for breast cancer detection. Well-validated tissue-simulating phantoms are needed for objective, quantitative, and physically realistic testing for system development. Prior reported PAT phantoms with homogenous structures do not incorporate the irregular layered structure of breast tissue. To assess the impact of this simplification, we design and construct two-layer breast phantoms incorporating vessel-simulating inclusions and realistic undulations at the fat/fibroglandular tissue interface...
October 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29047516/numerical-reproduction-and-explanation-of-road-surface-mirages-under-grazing-angle-scattering
#13
Jia Lu, Huaichun Zhou
The mirror-like reflection image of the road surface under grazing-angle scattering can be easily observed in daily life. It was suggested that road surface mirages may occur due to a light-enhancing effect of the rough surface under grazing-angle scattering. The main purpose of this work is to explain the light-enhancing mechanism of rough surfaces under grazing-angle scattering. The off-specular reflection from a random rough magnesium oxide ceramic surface is analyzed by using the geometric optics approximation method...
July 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/29047141/dawn-song-in-natural-and-artificial-continuous-day-light-pollution-affects-songbirds-at-high-latitudes
#14
Elizabeth P Derryberry
In Focus: Da Silva, A., & Kempenaers, B. (2017). Singing from North to South: Latitudinal variation in timing of dawn singing under natural and artificial light conditions. Journal of Animal Ecology, 86, 1286-1297. doi: 10.1111/1365-2656.12739 Satellite images of the world at night show bright dots connected by glowing lines crisscrossing the globe. As these connect-the-dots become brighter and expand into more and more remote regions, much of the flora and fauna of the world are experiencing evolutionarily unprecedented levels of light at night...
October 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/29043712/uterus-dysplasia-associated-with-cervico-vaginal-agenesis
#15
Ali Mahdavi, Hadi Mirfazaelian, Ladan Younesi Asl, Zeynab Hasani, Maryam Bahreini
Müllerian ducts can form upper parts of normal female reproductive system and any failure in ductal fusion may result in to müllerian duct anomalies (MDA). We present a case of MDA and a uterus dysplasia with no evidence of cervical or upper vaginal tissue. This case showes the role of magnetic resonace imaging (MRI) on MDA diagnosis and urges the need for a unified reliable and practical classification more compatible with clinical practice.
January 2018: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/29040606/pinopode-score-around-the-time-of-implantation-is-predictive-of-successful-implantation-following-frozen-embryo-transfer-in-hormone-replacement-cycles
#16
X Y Jin, L J Zhao, D H Luo, L Liu, Y D Dai, X X Hu, Y Y Wang, X Lin, F Hong, T C Li, S Y Zhang
STUDY QUESTION: Is pinopode measurement of any prognostic value? SUMMARY ANSWER: Pinopode expression was significantly associated with the occurrence of pregnancy after frozen embryo transfer. WHAT IS KNOWN ALREADY: Pinopodes are expressed in the endometrium during the implantation period. Pinopode measurement has been proposed as a marker of endometrial receptivity. STUDY DESIGN, SIZE, DURATION: A prospective cohort study was conducted at the Center of Reproductive Medicine, Sir Run Run Shaw Hospital, between 2014 and 2016, recruiting 172 women with infertility and undergoing frozen embryo transfer following IVF treatment...
October 13, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29040471/endometriosis-fertility-index-predicts-live-births-following-surgical-resection-of-moderate-and-severe-endometriosis
#17
S Maheux-Lacroix, E Nesbitt-Hawes, R Deans, H Won, A Budden, D Adamson, J A Abbott
STUDY QUESTION: Can live birth be accurately predicted following surgical resection of moderate-severe (Stage III-IV) endometriosis? SUMMARY ANSWER: Live births can accurately be predicted with the endometriosis fertility index (EFI), with adnexal function being the most important factor to predict non-assisted reproductive technology (non-ART) fertility or the requirement for ART (www.endometriosisefi.com). WHAT IS KNOWN ALREADY: Fertility prognosis is important to many women with severe endometriosis...
November 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29027102/current-status-of-the-female-athlete-triad-update-and-future-directions
#18
REVIEW
Mary Jane De Souza, Kristen J Koltun, Clara V Etter, Emily A Southmayd
PURPOSE OF REVIEW: This review provides an update on the primary clinical sequelae of the Female Athlete Triad. RECENT FINDINGS: Scientific advancements have contributed to improve understanding of Triad-related conditions, including leptin's role as a potential neuroendocrine link between energy status and reproductive function. Use of finite element analysis of HRpQCT imaging has provided a more accurate assessment of bone geometry and bone strength and may be clinically relevant...
October 11, 2017: Current Osteoporosis Reports
https://www.readbyqxmd.com/read/29020026/features-of-the-normal-choriocapillaris-with-oct-angiography-density-estimation-and-textural-properties
#19
Giovanni Montesano, Davide Allegrini, Leonardo Colombo, Luca M Rossetti, Alfredo Pece
The main objective of our work is to perform an in depth analysis of the structural features of normal choriocapillaris imaged with OCT Angiography. Specifically, we provide an optimal radius for a circular Region of Interest (ROI) to obtain a stable estimate of the subfoveal choriocapillaris density and characterize its textural properties using Markov Random Fields. On each binarized image of the choriocapillaris OCT Angiography we performed simulated measurements of the subfoveal choriocapillaris densities with circular Regions of Interest (ROIs) of different radii and with small random displacements from the center of the Foveal Avascular Zone (FAZ)...
2017: PloS One
https://www.readbyqxmd.com/read/29018155/clinical-characteristics-of-138-chinese-female-patients-with-idiopathic-hypogonadotropic-hypogonadism
#20
Rui-Yi Tang, Rong Chen, Miao Ma, Shou-Qing Lin, Yi-Wen Zhang, Ya-Ping Wang
OBJECTIVE: To evaluate the clinical features of Chinese women with idiopathic hypogonadotropic hypogonadism (IHH). METHODS: We retrospectively reviewed the clinical characteristics, laboratory and imaging findings, therapeutic management and fertility outcomes of 138 women with IHH. All patients had been treated and followed up at an academic medical centre during 1990-2016. RESULTS: Among the 138 patients, 82 patients (59.4%) were diagnosed with normosmic IHH and 56 patients (40...
November 2017: Endocrine Connections
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