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https://www.readbyqxmd.com/read/29792041/increased-diagnostic-confidence-in-the-diagnosis-of-pituitary-micro-lesions-with-the-addition-of-three-dimensional-sampling-perfection-with-application-optimized-contrasts-using-different-flip-angle-evolutions-sequences
#1
Ying Tang, Yue Wu, Hua Zhang, Jing Wang, ZhenWei Yao
Background Conventional magnetic resonance imaging (MRI) is adversely affected by thick slices, small intersection gaps, and the partial volume effect, leading to the missed diagnosis or misdiagnosis of pituitary micro-lesions. Purpose To evaluate the diagnostic yield of three-dimensional sampling perfection with application-optimized contrasts using different flip-angle evolutions (3D-T2 SPACE) sequences compared with a standard MRI protocol for the diagnosis of pituitary micro-lesions. Material and Methods The MRI findings of 664 patients with clinically suspected pituitary lesions were retrospectively analyzed...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29790246/a-review-of-predation-as-a-limiting-factor-for-bird-populations-in-mesopredator-rich-landscapes-a-case-study-of-the-uk
#2
Staffan Roos, Jennifer Smart, David W Gibbons, Jeremy D Wilson
The impact of increasing vertebrate predator numbers on bird populations is widely debated among the general public, game managers and conservationists across Europe. However, there are few systematic reviews of whether predation limits the population sizes of European bird species. Views on the impacts of predation are particularly polarised in the UK, probably because the UK has a globally exceptional culture of intensive, high-yield gamebird management where predator removal is the norm. In addition, most apex predators have been exterminated or much depleted in numbers, contributing to a widely held perception that the UK has high numbers of mesopredators...
May 22, 2018: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/29789888/diffusion-tensor-imaging-in-acute-pyelonephritis-in-children
#3
Mickaël Lair, Mariette Renaux-Petel, Adnan Hassani, Yohann Cruypeninck, Ioana Vasies, Agnès Liard, Jean-Nicolas Dacher, Pierre-Hugues Vivier
BACKGROUND: Diffusion-weighted imaging plays a key role in the imaging of acute pyelonephritis by MRI. However the use of respiratory triggering is challenging and time-consuming in children. Diffusion tensor imaging without respiratory triggering might provide satisfying images of the moving kidneys. OBJECTIVE: To compare mean diffusivity diffusion tensor images obtained with free breathing with diffusion-weighted images obtained with respiratory triggering. MATERIALS AND METHODS: Thirty-one children with suspected acute pyelonephritis underwent axial diffusion tensor imaging acquisition with free breathing and axial and coronal diffusion-weighted imaging acquisitions with respiratory triggering...
May 22, 2018: Pediatric Radiology
https://www.readbyqxmd.com/read/29789887/proven-accuracy-for-a-new-dynamic-gap-measurement-in-navigated-tka
#4
Volkmar Mehliß, Marco Strauch Leira, Agustín Serrano Olaizola, Wolfgang Scior, Heiko Graichen
PURPOSE: Clinical outcome of TKA remains unsatisfactory in 20% of the cases. Navigation has added accuracy in terms of alignment, but has improved clinical outcome only in small series with gap-balanced techniques. Reason for that could be that conventional gap balanced TKA determines gaps in extension and 90° of flexion only. Furthermore, measurement is only static. Therefore, the accuracy of a new dynamic navigation software which allows gap assessment throughout the entire range of motion was tested...
May 22, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29788940/two-cases-in-which-3d-mri-was-used-to-differentiate-between-a-disc-mass-that-mimics-a-tumor-and-neurinoma
#5
Jingyu Jia, Qiangqiang Wei, Tianlong Wu, Dingwen He, Xigao Cheng
BACKGROUND: Since disc sequestration that mimics a tumor is rare and sometimes presents with an atypical appearance upon magnetic resonance imaging (MRI), it is often confused with other more common epidural and intradural neoplasms, particularly neurinoma. Open surgery is necessary due to the difficult of achieving a definitive diagnosis using computed tomography, MRI, and gadolinium- enhanced MRI prior to operation. Herein, we describe the use of coronal MR images of 3D fast-field echo with water selective excitation in the diagnosis of disc sequestration mimicking a tumor...
May 22, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29785586/suicide-by-plastic-bag-suffocation-combined-with-the-mixture-of-citric-acid-and-baking-soda-in-an-adolescent
#6
Keishu Murakami, Takashi Kawaguchi, Yumiko Hashizume, Kengo Kitamura, Misato Okada, Kohei Okumoto, Shoich Sakamoto, Yuko Ishida, Mizuho Nosaka, Akihiko Kimura, Akihiro Takatsu, Toshikazu Kondo
We describe a case of suicidal asphyxiation using a plastic bag combined with carbon dioxide (CO2 ) gas. A 20-year-old male, whose head was covered with a plastic bag, was found dead in his room. In the plastic bag, there were two glass-made cups containing liquid-like substance. Through crime scene investigation by police staffs, a bottle of citric acid and a box of baking soda were also discovered in his room. The forensic autopsy revealed that there were neither lesions nor injuries in all of the organs...
May 22, 2018: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/29785447/posterior-cortical-breakage-leads-to-posterior-tibial-slope-change-in-lateral-hinge-fracture-following-opening-wedge-high-tibial-osteotomy
#7
Sung-Sahn Lee, Kyung-Wook Nha, Dae-Hee Lee
PURPOSE: This study was designed to analyze the relationship between changes in posterior tibial slope and the absence or presence of lateral hinge fracture, diagnosed in the sagittal and axial planes, as well as the coronal plane, by computed tomography (CT) following opening wedge high tibial osteotomy (HTO). METHODS: This study involved 55 patients (55 knees) undergoing opening wedge HTO for primary medial osteoarthritis. Lateral hinge fractures were evaluated on CT scans according to the Takeuchi classification and were also classified as subtypes A, B, and C, depending on anterior, posterior, and both anterior and posterior cortical disruptions, respectively, as determined by the sagittal and axial planes of CT scans which corresponded to the fracture line visible on coronal CT scans...
May 21, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29784601/the-anatomage-table-and-the-placement-of-titanium-mesh-for-the-management-of-orbital-floor-fractures
#8
Matteo Brucoli, Francesca Boccafoschi, Paolo Boffano, Emanuele Broccardo, Arnaldo Benech
OBJECTIVE: The anatomy of the head and neck region is complex as are its implications for maxillofacial pathologic conditions and their surgical treatments. We hypothesize that the assessment of the surgical management of orbital floor fractures by using titanium mesh could represent an appropriate first experimental field for the use of the Anatomage Table in maxillofacial surgery. STUDY DESIGN: Patients with unilateral orbital floor fractures were searched for in the hospital database of Novara University Hospital, Novara, Italy...
May 2, 2018: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29784530/triplane-hallux-abducto-valgus-classification
#9
REVIEW
Daniel J Hatch, Robert D Santrock, Bret Smith, Paul Dayton, Lowell Weil
One of the most common procedures performed in the foot and ankle is correction of hallux abducto valgus deformity or "bunion surgery." Most foot and ankle surgeons recognize the challenges associated with defining each patient's individual deformity and selecting the optimal procedure for the best long-term results. Using current 2-dimensional algorithms that focus on the severity of the transverse plane deformity, surgical outcomes have varied. In the past 10 years, high recurrence and complication rates for popular procedures have been reported...
May 18, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29782623/astrocytic-hypertrophy-in-the-rat-ventral-tegmental-area-following-chronic-morphine-differs-with-age
#10
Emily C Goins, Dusica Bajic
The ventral tegmental area (VTA) is the origin of the mesolimbic dopaminergic system known to play an integral role in mediating reward and development of drug addiction. Although the differences in neuronal plasticity of VTA at various ages remain to be understood, age is known to influence the effects of chronic opioids. In addition, adaptations associated with exposure to opioids within glial populations located in the VTA are poorly understood. The objective of the study was to determine if there are changes in astrocytic immunofluorescent labeling in the VTA following chronic morphine administration in a rat model at different ages: newborn at postnatal day (PD)7 and adult (estimated PD57)...
2018: Journal of neurology and neurorehabilitation research
https://www.readbyqxmd.com/read/29782395/pull-out-of-upper-thoracic-pedicle-screws-can-cause-spinal-canal-encroachment-in-growing-rod-treatment
#11
Senol Bekmez, Aykut Kocyigit, Zeynep Deniz Olgun, Mehmet Ayvaz, Halil Gokhan Demirkiran, Ergun Karaagaoglu, Muharrem Yazici
BACKGROUND: Proximal foundation failure is a common complication of growing rod (GR) treatment for early-onset scoliosis. Spinal canal encroachment due to pull-out of pedicle screw used as proximal foundation has been anecdotally reported in GR patients. The aim of this study is to report the prevalence of spinal canal encroachment of pedicle screws in GR treatment and determine risk factors using a single-center cohort. METHODS: Inclusion criteria were: (1) GR for early-onset scoliosis and (2) pull-out of at least 1 proximal anchor pedicle screw...
May 4, 2018: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29781768/guided-bone-regeneration-and-implant-placement-in-association-with-a-coronally-positioned-palatal-sliding-flap-a-17-year-follow-up-case-report
#12
Carlo Maiorana, Pier Paolo Poli, Mario Beretta
The aim of the present case report was to show the 17-year hard and soft tissues stability of guided bone regeneration procedure associated with dental implants insertion. A 52-year-old male patient presented with a partial edentulism in the upper right maxilla. A graft consisting of deproteinized bovine bone mineral and autogenous bone stabilized by a non-resorbable expanded polytetrafluoroethylene membrane was used to reconstruct the missing bone applying the biological principles of guided bone regeneration...
May 21, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29781570/effect-of-motor-based-speech-intervention-on-articulatory-placement-in-the-treatment-of-a-posterior-nasal-fricative-a-preliminary-mri-study-on-a-single-subject
#13
Kazlin N Mason, Eshan Pua, Jamie L Perry
BACKGROUND: Posterior nasal fricatives are a learned compensatory articulation error and commonly substituted for oral fricatives. Treatment of such articulation errors requires the modification or teaching of skilled movements. A motor-based approach is designed to teach the complex motor skill movement sequences required in the production of sounds. Although motor learning research is well established, little has been done to determine how the approach changes the underlying physiology of articulatory movements...
May 21, 2018: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/29780802/exploring-the-potential-of-generative-adversarial-networks-for-synthesizing-radiological-images-of-the-spine-to-be-used-in-in-silico-trials
#14
Fabio Galbusera, Frank Niemeyer, Maike Seyfried, Tito Bassani, Gloria Casaroli, Annette Kienle, Hans-Joachim Wilke
In silico trials recently emerged as a disruptive technology, which may reduce the costs related to the development and marketing approval of novel medical technologies, as well as shortening their time-to-market. In these trials, virtual patients are recruited from a large database and their response to the therapy, such as the implantation of a medical device, is simulated by means of numerical models. In this work, we propose the use of generative adversarial networks to produce synthetic radiological images to be used in in silico trials...
2018: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29780745/impact-of-minimal-root-canal-taper-on-the-fracture-resistance-of-endodontically-treated-bicuspids
#15
Carla Zogheib, Germain Sfeir, Gianluca Plotino, Gustavo De Deus, Maha Daou, Issam Khalil
Objective: Minimal invasive endodontics preserve coronal and radicular tooth structure to increase the fracture resistance of teeth. The aim of this study was to assess the influence of final preparation taper on the fracture resistance of maxillary premolars. Materials and Methods: Sixty maxillary premolars were selected and divided into 2 groups: 30 were shaped with a final apical diameter 30 and a 4% taper and 30 with 6% taper using iRaCe® instrument (FKG dentaire, Switzerland)...
March 2018: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/29780287/forward-modeling-of-coronal-mass-ejection-flux-ropes-in-the-inner-heliosphere-with-3dcore
#16
C Möstl, T Amerstorfer, E Palmerio, A Isavnin, C J Farrugia, C Lowder, R M Winslow, J M Donnerer, E K J Kilpua, P D Boakes
Forecasting the geomagnetic effects of solar storms, known as coronal mass ejections (CMEs), is currently severely limited by our inability to predict the magnetic field configuration in the CME magnetic core and by observational effects of a single spacecraft trajectory through its 3-D structure. CME magnetic flux ropes can lead to continuous forcing of the energy input to the Earth's magnetosphere by strong and steady southward-pointing magnetic fields. Here we demonstrate in a proof-of-concept way a new approach to predict the southward field B z in a CME flux rope...
March 2018: Space Weather: the International Journal of Research & Applications
https://www.readbyqxmd.com/read/29780229/long-term-follow-up-of-motor-function-deterioration-following-microsurgical-resection-of-middle-third-parasagittal-and-falx-meningioma
#17
Ashraf Ahmad Elzarief, Mohamed Fouad Ibrahim
Background: Incidence of parasagittal meningioma varies in literature; it ranges from 16.8% to 25.6% of intracranial meningioma. Parafalcine meningioma accounts for about 8.5% of intracranial meningioma. Based on their relation to the superior Sagittal sinus and falx, these tumors had been classified into 3 groups; anterior third located between crista galli and coronal suture, middle third located between coronal and lambdoid sutures, and posterior third located posterior to lambdoid suture...
2018: The Egyptian journal of neurology, psychiatry and neurosurgery
https://www.readbyqxmd.com/read/29780065/prediction-of-fontan-associated-liver-disease-using-a-novel-cine-magnetic-resonance-imaging-vortex-flow-map-in-the-right-atrium
#18
Umiko Ishizaki, Michinobu Nagao, Yumi Shiina, Kenji Fukushima, Tatsunori Takahashi, Yamato Shimomiya, Yuka Matsuo, Kei Inai, Shuji Sakai
BACKGROUND: Long-term hepatic dysfunction is an increasingly recognized complication of the Fontan operation for univentricular hearts. The purpose of this study was to determine whether Fontan-associated liver disease (FALD) could be predicted by flow dynamics in the right atrium (RA) of Fontan circulation.Methods and Results:Cardiac MRI and the serum levels of total bilirubin (TBil) and hyaluronic acid (HA) were analyzed in 36 patients who underwent an atriopulmonary connection type of Fontan operation...
May 18, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29779300/coroners-recommendations-for-prevention-of-resident-deaths-in-aged-care-the-role-of-primary-care-providers
#19
Georgia Aitken, Athena Demosthenous, Lyndal Bugeja, Melissa Willoughby, Carmel Young, Joseph E Ibrahim
BACKGROUND AND OBJECTIVES: Currently, very little is known about how coroners consider a role for general practitioners (GPs) and registered nurses (RNs) in recommendations for the prevention of premature death. Involving these professions in recommendations generally directed towards government organisations or residential aged care providers and management may contribute to more successful broader policy changes. The aim of this article was to examine whether coroners' recommendations describe a specific role for GPs and RNs in the prevention of premature death in residential aged care settings and, if so, what domains of practice were considered...
May 2018: Australian journal of general practice
https://www.readbyqxmd.com/read/29779269/-the-applications-of-periodontal-gingival-surgery-%C3%A2-alternative-materials
#20
Er-Jia Mao
The main purposes of periodontal graft surgery include achieving root coverage, improving the clinical attachment level and keratinized tissue, and advancing the procedure of periodontal plastic surgery. Autogenous graft, such as subepithelial connective tissue graft-based procedure, provide the best outcomes for mean and complete root coverage, as well as increase in keratinized tissue. However, a disadvantage of the procedure is in the location of the operation itself: the additional surgical site (palate)...
April 1, 2018: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
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