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https://www.readbyqxmd.com/read/29457416/-meta-analysis-of-the-efficacy-and-safety-of-pfna-and-intertan-for-the-treatment-of-intertrochanteric-fractures
#1
Jun-Jun Shi, Yu-Ze Wang, Yuan Li, Yuan-Peng Gao, Dong Wang, Zhi-Yong Wang, Zhi-Qiang Zhang
OBJECTIVE: To system evaluate the clinical effect and safety of PFNA and InterTAN internal fixation methods for femoral intertrochanteric fracture. METHODS: According to the Cochrane systemic analysis method, randomized controlled trials and quasi-randomized controlled trials which were about the comparison of PFNA and InterTAN for intertrochanteric fracture were collected from Cochrane Library(2017, issue 4), PubMed (January, 2003-May, 2017), Wanfang Med Online (January, 2003-May, 2017) and China Academic Journals Full-text Database(January, 2003-May, 2017) by computer searching...
October 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29446647/management-of-multi-casualty-incidents-in-mountain-rescue-evidence-based-guidelines-of-the-international-commission-for-mountain-emergency-medicine-icar-medcom
#2
Marc Blancher, François Albasini, Fidel Elsensohn, Ken Zafren, Natalie Hölzl, Kyle McLaughlin, Albert R Wheeler, Steven Roy, Hermann Brugger, Mike Greene, Peter Paal
Blancher, Marc, François Albasini, Fidel Elsensohn, Ken Zafren, Natalie Hölzl, Kyle McLaughlin, Albert R. Wheeler III, Steven Roy, Hermann Brugger, Mike Greene, and Peter Paal. Management of multi-casualty incidents in mountain rescue. High Alt Med Biol. 00:000-000, 2018. INTRODUCTION: Multi-Casualty Incidents (MCI) occur in mountain areas. Little is known about the incidence and character of such events, and the kind of rescue response. Therefore, the International Commission for Mountain Emergency Medicine (ICAR MEDCOM) set out to provide recommendations for the management of MCI in mountain areas...
February 15, 2018: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/29440123/portrait-patient-centered-outcomes-related-to-treatment-practices-in-peripheral-arterial-disease-investigating-trajectories-overview-of-design-and-rationale-of-an-international-prospective-peripheral-arterial-disease-study
#3
REVIEW
Kim G Smolderen, Kensey Gosch, Manesh Patel, W Schuyler Jones, Alan T Hirsch, John Beltrame, Rob Fitridge, Mehdi H Shishehbor, Johan Denollet, Patrick Vriens, Jan Heyligers, Nancy Stone MEd, Herbert Aronow, J Dawn Abbott, Clementine Labrosciano, Rudolf Tutein-Nolthenius, John A Spertus
BACKGROUND: Health status outcomes, including symptoms, functional status, and quality of life, are critically important outcomes from patients' perspectives. The PORTRAIT study (Patient-Centered Outcomes Related to Treatment Practices in Peripheral Arterial Disease: Investigating Trajectories) was designed to prospectively define health status outcomes and examine associations between patients' characteristics and care to these outcomes among those presenting with new-onset or worsened claudication...
February 2018: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/29439762/the-treatment-of-temporomandibular-joint-dislocation
#4
Ulla Prechel, Peter Ottl, Oliver M Ahlers, Andreas Neff
BACKGROUND: The estimated incidence of temporomandibular joint dislocation in Germany is at least 25/100 000 per year. A correct diagnosis and the initiation of appropriate treatment without delay are essential if permanent damage to the joint is to be avoided. METHODS: This review is based on pertinent publications retrieved by a systematic search in the PubMed, Cochrane, Embase, and ZB Med databases. RESULTS: The initial search yielded 24 650 hits; duplicates were removed and 136 studies were chosen for further analysis...
February 2, 2018: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/29425664/topical-testosterone-therapy-adherence-and-outcomes-among-men-with-primary-or-secondary-hypogonadism
#5
Michael Grabner, Zsolt Hepp, Amit Raval, Fang Tian, Mohit Khera
BACKGROUND: Men with primary or secondary hypogonadism (HG) prescribed testosterone therapy (TTh) who terminate treatment early might not obtain the benefit of symptom relief. AIM: To estimate adherence to topical TTh and to compare baseline characteristics and follow-up outcomes between adherent and non-adherent patients in a population of commercially insured US men with primary or secondary HG. METHODS: A retrospective cohort of adult men with primary or secondary HG and initiating topical TTh from 2007 through 2014, with continuous coverage during 12-month baseline and follow-up periods, was identified from a large US health plan...
February 2018: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/29396023/sexual-modes-questionnaire-smq-translation-and-psychometric-properties-of-the-italian-version-of-the-automatic-thought-scale
#6
Filippo Maria Nimbi, Francesca Tripodi, Chiara Simonelli, Pedro Nobre
BACKGROUND: The Sexual Modes Questionnaire (SMQ) is a validated and widespread used tool to assess the association among negative automatic thoughts, emotions, and sexual response during sexual activity in men and women. AIM: To test the psychometric characteristics of the Italian version of the SMQ focusing on the Automatic Thoughts subscale (SMQ-AT). METHODS: After linguistic translation, the psychometric properties (internal consistency, construct, and discriminant validity) were evaluated...
January 25, 2018: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/29396020/low-intensity-shockwave-therapy-for-erectile-dysfunction-a-randomized-clinical-trial-comparing-2-treatment-protocols-and-the-impact-of-repeating-treatment
#7
Dimitrios Kalyvianakis, Evangelos Memmos, Ioannis Mykoniatis, Paraskevi Kapoteli, Dimitrios Memmos, Dimitrios Hatzichristou
BACKGROUND: There is lack of evidence-based optimization of the protocol for low-intensity shockwave therapy for erectile dysfunction. Furthermore, the safety and efficacy of repeating shockwave therapy have not been explored. AIM: To compare the efficacy and safety of 6 and 12 treatment sessions within a 6-week treatment period and investigate the effect of repeat treatment after a 6-month period in a 2-phase study. METHODS: Patients with vasculogenic erectile dysfunction that responded to phosphodiesterase type 5 inhibitors were randomized into 2 groups: low-intensity shockwave therapy sessions once (group A, n = 21) or twice (group B, n = 21) per week for 6 consecutive weeks (phase 1)...
January 27, 2018: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/29393539/pulsed-gradient-stimulated-echo-pgste-nmr-shows-spatial-dependence-of-fluid-diffusion-in-human-stage-iv-osteoarthritic-cartilage
#8
Sarah E Mailhiot, Sarah L Codd, Jennifer R Brown, Joseph D Seymour, Ronald K June
PURPOSE: Human osteoarthritic (OA) articular cartilage was investigated with spatially resolved pulsed gradient stimulated echo (PGStE) NMR using strong gradients. In this study, the diffusivity of fluid and biopolymer was characterized as a function of depth within human OA cartilage cores. METHODS: One dimensional (1D) spatially resolved diffusion profiles were measured for human OA cartilage using a standard pulsed gradient stimulated echo (PGStE) sequence with the addition of a read imaging gradient...
February 2, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29393531/diffusion-kurtosis-imaging-with-free-water-elimination-a-bayesian-estimation-approach
#9
Quinten Collier, Jelle Veraart, Ben Jeurissen, Floris Vanhevel, Pim Pullens, Paul M Parizel, Arnold J den Dekker, Jan Sijbers
PURPOSE: Diffusion kurtosis imaging (DKI) is an advanced magnetic resonance imaging modality that is known to be sensitive to changes in the underlying microstructure of the brain. Image voxels in diffusion weighted images, however, are typically relatively large making them susceptible to partial volume effects, especially when part of the voxel contains cerebrospinal fluid. In this work, we introduce the "Diffusion Kurtosis Imaging with Free Water Elimination" (DKI-FWE) model that separates the signal contributions of free water and tissue, where the latter is modeled using DKI...
February 2, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29388313/deep-learning-approaches-for-detection-and-removal-of-ghosting-artifacts-in-mr-spectroscopy
#10
Sreenath P Kyathanahally, André Döring, Roland Kreis
PURPOSE: To make use of deep learning (DL) methods to detect and remove ghosting artifacts in clinical magnetic resonance spectra of human brain. METHODS: Deep learning algorithms, including fully connected neural networks, deep-convolutional neural networks, and stacked what-where auto encoders, were implemented to detect and correct MR spectra containing spurious echo ghost signals. The DL methods were trained on a huge database of simulated spectra with and without ghosting artifacts that represent complex variations of ghost-ridden spectra, transformed to time-frequency spectrograms...
February 1, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29388250/transverse-slot-antennas-for-high-field-mri
#11
Leeor Alon, Riccardo Lattanzi, Karthik Lakshmanan, Ryan Brown, Cem M Deniz, Daniel K Sodickson, Christopher M Collins
PURPOSE: Introduce a novel coil design using an electrically long transversely oriented slot in a conductive sheet. THEORY AND METHODS: Theoretical considerations, numerical simulations, and experimental measurements are presented for transverse slot antennas as compared with electric dipole antennas. RESULTS: Simulations show improved central and average transmit and receive efficiency, as well as larger coverage in the transverse plane, for a single slot as compared to a single dipole element...
February 1, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29383737/quality-evaluation-of-no-reference-mr-images-using-multidirectional-filters-and-image-statistics
#12
Jinseong Jang, Kihun Bang, Hanbyol Jang, Dosik Hwang
PURPOSE: This study aimed to develop a fully automatic, no-reference image-quality assessment (IQA) method for MR images. METHODS: New quality-aware features were obtained by applying multidirectional filters to MR images and examining the feature statistics. A histogram of these features was then fitted to a generalized Gaussian distribution function for which the shape parameters yielded different values depending on the type of distortion in the MR image. Standard feature statistics were established through a training process based on high-quality MR images without distortion...
January 30, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29380427/real-time-correction-of-respiration-induced-distortions-in-the-human-spinal-cord-using-a-24-channel-shim-array
#13
Ryan Topfer, Alexandru Foias, Nikola Stikov, Julien Cohen-Adad
PURPOSE: To reduce respiration-induced magnetic field distortions and the attendant image artifacts in echo-planar imaging (EPI) of the human spinal cord. METHODS: Using a custom-designed 24-channel shim array, shim updates were issued in real time based on a concurrently monitored respiratory trace and a pair of gradient echo (GRE) field maps acquired during an initial training phase. Proof-of-concept application in GRE-EPI was conducted in 6 subjects. RESULTS: Over the thoracic spinal cord, real-time shimming reduced respiration-induced distortions in the EPI by 48...
January 29, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29380423/improved-tolerance-to-off-resonance-in-spectral-spatial-epi-of-hyperpolarized-1-13-c-pyruvate-and-metabolites
#14
Justin Y C Lau, Benjamin J Geraghty, Albert P Chen, Charles H Cunningham
PURPOSE: For 13 C echo-planar imaging (EPI) with spectral-spatial excitation, main field inhomogeneity can result in reduced flip angle and spatial artifacts. A hybrid time-resolved pulse sequence, multi-echo spectral-spatial EPI, is proposed combining broader spectral-spatial passbands for greater off-resonance tolerance with a multi-echo acquisition to separate signals from potentially co-excited resonances. METHODS: The performance of the imaging sequence and the reconstruction pipeline were evaluated for 1 H imaging using a series of increasingly dilute 1,4-dioxane solutions and for 13 C imaging using an ethylene glycol phantom...
January 29, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29380414/isotropic-resolution-diffusion-tensor-imaging-of-lumbosacral-and-sciatic-nerves-using-a-phase-corrected-diffusion-prepared-3d-turbo-spin-echo
#15
Barbara Cervantes, Anh T Van, Dominik Weidlich, Hendrick Kooijman, Andreas Hock, Ernst J Rummeny, Alexandra Gersing, Jan S Kirschke, Dimitrios C Karampinos
PURPOSE: To perform in vivo isotropic-resolution diffusion tensor imaging (DTI) of lumbosacral and sciatic nerves with a phase-navigated diffusion-prepared (DP) 3D turbo spin echo (TSE) acquisition and modified reconstruction incorporating intershot phase-error correction and to investigate the improvement on image quality and diffusion quantification with the proposed phase correction. METHODS: Phase-navigated DP 3D TSE included magnitude stabilizers to minimize motion and eddy-current effects on the signal magnitude...
January 29, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29377287/multimodal-assessment-of-orbital-immune-cell-infiltration-and-tissue-remodeling-during-development-of-graves-disease-by-1-h19-f-mri
#16
Ulrich Flögel, Anke Schlüter, Christoph Jacoby, Sebastian Temme, J Paul Banga, Anja Eckstein, Jürgen Schrader, Utta Berchner-Pfannschmidt
PURPOSE: To evaluate key molecular and cellular features of Graves orbitopathy (GO) by simultaneous monitoring of alterations in morphology, inflammatory patterns, and tissue remodeling. METHODS: To this end, we utilized a murine model of GO induced by immunization with a human thyroid-stimulating hormone receptor A-subunit plasmid. Altogether, 52 mice were used: 27 GOs and 25 controls (Ctrl) immunized with β-galactasidose plasmid. From these, 17 GO and 12 Ctrl mice were subjected to multimodal MRI at 9...
January 27, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29369451/feasibility-of-single-shot-multi-level-multi-angle-diffusion-tensor-imaging-of-the-human-cervical-spinal-cord-at-7t
#17
Aurélien Massire, Henitsoa Rasoanandrianina, Manuel Taso, Maxime Guye, Jean-Philippe Ranjeva, Thorsten Feiweier, Virginie Callot
PURPOSE: Diffusion tensor imaging (DTI), which is frequently used to characterize microstructure impairments in many spinal cord diseases at clinical fields, may benefit from 7T investigations. Yet, it presents specific technical challenges, such as increased magnetic susceptibility-induced image distortions. METHODS: Eight healthy volunteers were scanned at 7T using a prototype diffusion multi-slice multi-angle (MSMA) single-shot spin-echo echo planar imaging (EPI) sequence developed to explore the whole cervical spinal cord while limiting the partial volume effects related to the cord curvature...
January 25, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29369424/non-contrast-enhanced-4d-intracranial-mr-angiography-based-on-pseudo-continuous-arterial-spin-labeling-with-the-keyhole-and-view-sharing-technique
#18
Makoto Obara, Osamu Togao, Gabriele M Beck, Shuhei Shibukawa, Tomoyuki Okuaki, Masami Yoneyama, Masanobu Nakamura, Hiroshi Honda, Marc Van Cauteren
PURPOSE: 4D dynamic MR angiography (4D-MRA) using pseudo-continuous arterial spin labeling (pCASL), combined with Keyhole and View-sharing (4D-PACK) for scan acceleration, is introduced. Its validity for arterial inflow dynamics visualization was investigated through comparison with 4D-pCASL and contrast inherent inflow enhanced multiphase angiography (CINEMA). METHODS: Six healthy volunteers were included in the study. The arterial transit time (ATT) in 4D-PACK was measured at multiple regions in middle cerebral artery (MCA), and Pearson's correlation coefficient with ATT in 4D-pCASL was calculated...
January 25, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29369422/cardiac-triggered-pseudo-continuous-arterial-spin-labeling-a-cost-effective-scheme-to-further-enhance-the-reliability-of-arterial-spin-labeling-mri
#19
Yang Li, Deng Mao, Zhiqiang Li, Michael Schär, Jay J Pillai, James G Pipe, Hanzhang Lu
PURPOSE: Arterial-spin-labeling (ASL) magnetic resonance imaging (MRI) is intrinsically a low signal-to-noise ratio (SNR) technique. This study aims to enhance its sensitivity by quantifying physiological noise attributed to cardiac pulsation and devising an improved sequence, cardiac-triggered ASL, to minimize this noise. METHODS: A total of 16 healthy subjects were studied on a 3 Tesla MRI system. The influence of cardiac pulsation on pseudo-continuous ASL (pCASL) signal was first investigated by performing a regular pCASL sequence while the cardiac phase of the image acquisition was recorded by a pulse oximeter...
January 25, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29369415/cross-vendor-harmonization-of-t2-relaxation-under-spin-tagging-trust-mri-for-the-assessment-of-cerebral-venous-oxygenation
#20
Dengrong Jiang, Peiying Liu, Yang Li, Deng Mao, Cuimei Xu, Hanzhang Lu
PURPOSE: Cerebral venous oxygenation (Yv ) is an important physiological parameter and has potential clinical application in many brain diseases. T2 -relaxation-under-spin-tagging (TRUST) is a commonly used MRI method to measure Yv . Harmonization of this technique across MRI vendors is important for dissemination and multicenter studies of brain oxygenation and metabolism as a disease biomarker. METHODS: TRUST pulse sequence components and imaging parameters were carefully matched between two major MRI vendors, Philips and Siemens...
January 25, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
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