keyword
MENU ▼
Read by QxMD icon Read
search

Posterior position

keyword
https://www.readbyqxmd.com/read/29668072/a-unique-telomere-dna-expansion-phenotype-in-human-retinal-rod-photoreceptors-associated-with-aging-and-disease
#1
W Robert Bell, Alan K Meeker, Anthony Rizzo, Sumit Rajpara, Ian M Rosenthal, Miguel Flores Bellver, Silvia Aparicio Domingo, Xiufeng Zhong, John R Barber, Corinne E Joshu, M Valeria Canto-Soler, Charles G Eberhart, Christopher M Heaphy
We have identified a discrete, focal telomere DNA expansion phenotype in the photoreceptor cell layer of normal, non-neoplastic human retinas. This phenotype is similar to that observed in a subset of human cancers, including a large fraction of tumors of the central nervous system, which maintain their telomeres via the non-telomerase-mediated alternative lengthening of telomeres (ALT) mechanism. We observed that these large, ultra-bright telomere DNA foci are restricted to the rod photoreceptors and are not observed in other cell types...
April 18, 2018: Brain Pathology
https://www.readbyqxmd.com/read/29667733/longitudinal-analysis-of-tibiofemoral-cartilage-contact-area-and-position-in-acl-reconstructed-patients
#2
Ellison Chen, Keiko Amano, Valentina Pedoia, Richard B Souza, C Benjamin Ma, Xiaojuan Li
Patients who have suffered ACL injury are more likely to develop early onset post-traumatic osteoarthritis despite reconstruction. The purpose of our study was to evaluate the longitudinal changes in the tibiofemoral cartilage contact area size and location after ACL injury and reconstruction. Thirty-one patients with isolated unilateral ACL injury were followed with T2 weighted Fast Spin Echo, T1ρ and T2 MRI at baseline prior to reconstruction, and 6 months, 1 year, and 2 years after surgery. Areas were delineated in FSE images with an in-house Matlab program using a spline-based semi-automated segmentation algorithm...
April 18, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29666181/accuracy-of-image-guided-percutaneous-injection-into-a-phantom-spinal-cord-utilizing-flat-panel-detector-ct-with-mr-fusion-and-integrated-navigational-software
#3
Jason F Talbott, Daniel L Cooke, Marc C Mabray, Paul S Larson, Matthew R Amans, Steven W Hetts, Mark W Wilson, Terilyn Moore, Ernesto A Salegio
PURPOSE: To evaluate the accuracy of percutaneous fluoroscopic injection into the spinal cord of a spine phantom utilizing integrated navigational guidance from fused flat panel detector CT (FDCT) and MR datasets. Conventional and convection-enhanced delivery (CED) techniques were evaluated. MATERIALS AND METHODS: FDCT and MR datasets of a swine thoracic spine phantom were co-registered using an integrated guidance system and surface to spinal cord target trajectory planning was performed on the fused images...
April 17, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29666121/clinical-features-and-visual-outcomes-of-111-patients-with-new-onset-acute-vogt-koyanagi-harada-disease-treated-with-pulse-intravenous-corticosteroids
#4
Makiko Nakayama, Hiroshi Keino, Takayo Watanabe, Annabelle A Okada
PURPOSE: To describe the clinical features, treatment and visual outcomes of Japanese patients with new-onset acute Vogt-Koyanagi-Harada (VKH) disease. METHODS: Clinical records of 111 patients who presented between 1999 and 2015 to the Ocular Inflammation Service of the Kyorin Eye Center, Tokyo, were reviewed. RESULTS: Of the 111 patients (68 women, 43 men), 16 had complete, 90 had incomplete and 5 had probable VKH disease. The median follow-up period was 36 months (4-175 months)...
April 17, 2018: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29666087/conservative-treatment-in-displaced-fractures-of-the-humeral-capitellum-a-reduction-technique-under-local-anaesthesia
#5
Takahisa Ogawa, Shinichi Shirasawa
We report the case of a 46-year-old woman who struck her right elbow on the ground after a fall on ice. Radiography showed a right humeral capitellar fracture, and CT further confirmed a Dubberley type 1A fracture. Closed reduction was performed under local anaesthesia, and an anatomical position was obtained. After the reduction, her right elbow was casted for 18 days. Three months after the injury, bone union was achieved without displacement, and the active range of motion of her right elbow recovered similar to the unaffected side...
April 17, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29665089/three-dimensional-endoanal-ultrasound-features-of-the-anal-sphincter-in-asian-primigravidae
#6
Dakshitha Praneeth Wickramasinghe, Supun Senaratne, Hemantha Senanayake, Dharmabandu Nandadeva Samarasekera
OBJECTIVES: The normal parameters of 3-dimensional endoanal ultrasound (3DEAUS) of the anal sphincter have not been reported for primigravidae or pregnant women at present. 3DEAUS parameters in Asian primigravidae were assessed in this study. METHODS: We analyzed 3DEAUS data of 101 consecutives Asian primigravidae, assessed in the early third trimester. The assessment was performed with a rigid ultrasonic probe (Olympus® RU 12M-R1 probe and EU-ME1 ultrasound system (Olympus Corp...
April 17, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29664333/relationship-between-tooth-length-and-three-dimensional-mandibular-morphology
#7
Yu Hikita, Tetsutaro Yamaguchi, Daisuke Tomita, Mohamed Adel, Takatoshi Nakawaki, Koshu Katayama, Koutaro Maki, Ryosuke Kimura
OBJECTIVES: To clarify the relationship between tooth length and three-dimensional mandibular morphology in a healthy Japanese population. MATERIALS AND METHODS: This study included 181 Japanese adults: 66 men and 115 women. Cone-beam computed tomography (CBCT) images were acquired with a dentofacial cone-beam x-ray CT scanner. Tooth length was measured with open-source OsiriX medical image processing software. Crown height and root length were measured in the maxillary and mandibular central incisors, lateral incisors, canines, first premolars, second premolars, first molars, and second molars...
April 17, 2018: Angle Orthodontist
https://www.readbyqxmd.com/read/29663495/three-dimensional-mapping-of-the-joint-space-for-the-diagnosis-of-knee-osteoarthritis-based-on-high-resolution-computed-tomography-comparison-with-radiographic-outerbridge-and-meniscal-classifications
#8
Houda Mezlini-Gharsallah, Rabaa Youssef, Stéphanie Uk, Jean Denis Laredo, Christine Chappard
One of the most important characteristic of knee osteoarthritis (OA) is the joint space (JS) width narrowing. Measurements are usually performed on two dimensional (2D) X-rays. We propose and validate a new method to assess the 3D joint space at the medial knee compartment using high resolution peripheral computed tomography images. A semi-automated method was developed to obtain a distance 3D map between femur an tibia with the following parameters: volume, minimum, maximum, mean, standard deviation, median, asymmetry and entropy...
April 16, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29662446/a-knowledge-based-arrangement-of-prototypical-neural-representation-prior-to-experience-contributes-to-selectivity-in-upcoming-knowledge-acquisition
#9
Hiroki Kurashige, Yuichi Yamashita, Takashi Hanakawa, Manabu Honda
Knowledge acquisition is a process in which one actively selects a piece of information from the environment and assimilates it with prior knowledge. However, little is known about the neural mechanism underlying selectivity in knowledge acquisition. Here we executed a 2-day human experiment to investigate the involvement of characteristic spontaneous activity resembling a so-called "preplay" in selectivity in sentence comprehension, an instance of knowledge acquisition. On day 1, we presented 10 sentences (prior sentences) that were difficult to understand on their own...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29660636/regional-homogeneity-and-functional-connectivity-patterns-in-major-depressive-disorder-cognitive-vulnerability-to-depression-and-healthy-subjects
#10
Hui Sun, Lizhu Luo, Xinru Yuan, Lu Zhang, Yini He, Shuqiao Yao, Jiaojian Wang, Jing Xiao
BACKGROUND: Cognitive vulnerability to depression (CVD) is a high risk for depressive disorder. Recent studies focus on individuals with CVD to determine the neural basis of major depressive disorder (MDD) neuropathology. However, whether CVD showed specific or similar brain functional activity and connectivity patterns, compared to MDD, remain largely unknown. METHODS: Here, using resting-state functional magnetic resonance imaging in subjects with CVD, healthy controls (HC) and MDD, regional homogeneity (ReHo) and resting-state functional connectivity (R-FC) analyses were conducted to assess local synchronization and changes in functional connectivity patterns...
April 7, 2018: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29659626/influence-of-respiratory-mechanics-and-drive-on-genioglossus-movement-under-ultrasound-imaging
#11
Benjamin C H Kwan, Rachel A McBain, Billy L Luu, Jane E Butler, Lynne E Bilston, Simon C Gandevia
METHODS: Twenty healthy subjects (10 males, age 28±5 years [mean ± SD]) lay supine, awake, with the head in a neutral position. Ventilation was monitored with inductance bands. Real-time B-mode ultrasound movies were analysed. We measured genioglossus motion (i) during spontaneous breathing, voluntary targeted breathing (normal tidal volume Vt), and voluntary hyperpnoea (at 1.5Vt and 2 Vt); (ii) during inspiratory flow resistive loading; (iii) with changes in end-expiratory lung volume (EELV)...
2018: PloS One
https://www.readbyqxmd.com/read/29659441/inter-intra-observer-reliability-of-t1-pelvic-angle-tpa-a-novel-radiographic-measure-for-global-sagittal-deformity
#12
Stephen M Plachta, Heidi Israel, Jennifer Brechbuhler, Ann Hayes, Stephen Huebner, Howard M Place
STUDY DESIGN: Reliability Analysis. OBJECTIVE: To assess intra- and inter-observer agreement of the T1 Pelvic Angle (T1PA), a novel radiographic measure of spinal sagittal alignment. Orthopaedic surgeons of various levels of experience measured the T1PA in a series of healthy adult volunteers. The relationship of the TIPA to pelvic position was also assessed. SUMMARY OF BACKGROUND DATA: Recent literature suggests that the T1PA is a more reliable measure of global sagittal alignment than traditional measurements (ie SVA)...
April 13, 2018: Spine
https://www.readbyqxmd.com/read/29659436/a-novel-technique-of-ultrasound-guided-selective-mandibular-nerve-block-with-a-lateral-pterygoid-plate-approach-a-cadaveric-study
#13
Wirinaree Kampitak, Tanvaa Tansatit, Yasuyuki Shibata
BACKGROUND AND OBJECTIVES: We aimed to describe a novel technique of ultrasound-guided selective mandibular nerve block with a lateral pterygoid plate (LPP) approach and to assess its feasibility and accuracy in a soft cadaver model. METHODS: Ten soft cadavers were studied. A curved array ultrasound transducer was applied over 1 side of the face of the cadaver, in an open-mouth position. The transducer was placed transversely below the zygomatic arch and tilted in the caudal-to-cranial direction to identify the boundary of the LPP...
April 14, 2018: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/29659196/lessons-from-amphioxus-bauplan-about-origin-of-cranial-nerves-of-vertebrates-that-innervates-extrinsic-eye-muscles
#14
José Luis Ferran, Luis Puelles
Amphioxus is the living chordate closest to the ancestral form of vertebrates, and in a key position to reveal essential aspects of the evolution of the brain Bauplan of vertebrates. The dorsal neural cord of this species at the larval stage is characterized by a small cerebral vesicle at its anterior end and a large posterior region. The latter is comparable in some aspects to the hindbrain and spinal cord regions of vertebrates. The rostral end of the cerebral vesicle contains a median pigment spot and associated rows of photoreceptor and other nerve cells; this complex is known as "the frontal eye"...
April 16, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29653444/effect-of-the-distal-femoral-joint-line-on-ligament-tensions-in-flexion-with-cruciate-retaining-total-knee-prostheses
#15
Rajkishen Narayanan, Nathaniel Lenz, Jordan Alexander Werner, Michael B Cross, Dean Hughes, Scott Laster, Ran Schwarzkopf
Proper ligament tension in knee flexion within cruciate-retaining (CR) total knee arthroplasty has long been associated with clinical success; however, traditional balancing principles have assumed that the distal femoral joint line (DFJL) affects only extension. The purpose of this study was to determine the effect DFJL may have on ligament strains and tibiofemoral kinematics of CR knee designs in flexion. A computational analysis was performed using a musculoskeletal modeling system for two different knee implants, the high-flex CR (HFCR) and guided-motion CR (GMCR)...
April 13, 2018: Journal of Knee Surgery
https://www.readbyqxmd.com/read/29653240/medial-meniscus-posterior-root-tear-induces-pathological-posterior-extrusion-of-the-meniscus-in-the-knee-flexed-position-an-open-magnetic-resonance-imaging-analysis
#16
S Masuda, T Furumatsu, Y Okazaki, Y Kodama, T Hino, Y Kamatsuki, S Miyazawa, T Ozaki
BACKGROUND: A medial meniscus posterior root tear (MMPRT) is defined as an injury to the posterior meniscal insertion on the tibia. In MMPRT, the medial meniscus (MM) hoop function is damaged, and the MM undergoes a medial extrusion into the interior from the superior articular surface of the tibia. However, the details of MM position and movement during knee joint movement are unclear in MMPRT cases. The present study aims to evaluate MM position and movement via magnetic resonance imaging (MRI) examination of the MM posterior extrusion (MMPE) at knee flexion angles of 10° and 90°...
April 10, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29652237/failure-of-facet-replacement-system-with-metal-on-metal-bearing-surface-and-subsequent-discovery-of-cobalt-allergy-report-of-2-cases
#17
Matthew L Goodwin, William Ryan Spiker, Darrel S Brodke, Brandon D Lawrence
The aim of this study was to report on 2 patients in whom metal-on-metal (MOM) facet replacements failed, with subsequent positive findings on allergy testing. Motion-preserving devices have been used with limited success when instrumentation is indicated in the mobile spine. MOM-bearing surfaces in orthopedics were developed to increase implant longevity, yet have been associated with numerous adverse outcomes, including local tissue reactions, pseudotumors, metallosis, and the need for revision surgery. Five patients with spinal stenosis and low-grade spondylolisthesis were randomized to undergo facet replacement surgery with the ACADIA facet replacement system at the authors' institution...
April 13, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29652192/achilles-pullout-strength-after-open-calcaneoplasty-for-haglund-syndrome
#18
Glenn Pfeffer, Tyler Gonzalez, Matthew Zapf, Trevor J Nelson, Melodie F Metzger
BACKGROUND: Haglund syndrome involves a prominent posterior superior prominence of the calcaneus. If nonoperative management fails, operative management with calcaneoplasty is often needed. No study has assessed Achilles tendon pullout strength after an open calcaneoplasty for Haglund syndrome. The purpose of this study was to investigate those changes in a cadaveric model and provide objective data upon which to base postoperative recovery. METHODS: Seven matched pairs of cadaveric specimens (mid-tibia to toes) were divided into 2 cohorts: (1) intact/untreated and (2) open resection...
April 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29650376/trapezius-muscle-transfer-for-restoration-of-elbow-extension-in-a-traumatic-brachial-plexus-injury
#19
Hamza M Alrabai, Martin G Gesheff, Ahmed I Hammouda, Janet D Conway
Voluntary elbow extension is essential for optimal upper limb positioning required for daily living activities, particularly above-shoulder maneuvers. The authors present a case of traumatic brachial plexus injury in which paralysis of the musculature selectively supplied by the posterior cord was based on magnetic resonance imaging and nerve conduction studies. An attempt at a radial nerve graft at another center was not effective. Ipsilateral hand function improved after multiple local tendon transfers were performed...
April 9, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29650306/multichannel-lung-sound-analysis-for-asthma-detection
#20
Md Ariful Islam, Irin Bandyopadhyaya, Parthasarathi Bhattacharyya, Goutam Saha
BACKGROUND AND OBJECTIVE: Lung sound signals convey valuable information of the lung status. Auscultation is an effective technique to appreciate the condition of the respiratory system using lung sound signals. The prior works on asthma detection from lung sound signals rely on the presence of wheeze. In this paper, we have classified normal and asthmatic subjects using advanced signal processing of posterior lung sound signals, even in the absence of wheeze. METHODS: We collected lung sounds of 60 subjects (30 normal and 30 asthma) using a novel 4-channel data acquisition system from four different positions over the posterior chest, as suggested by the pulmonologist...
June 2018: Computer Methods and Programs in Biomedicine
keyword
keyword
9366
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"