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https://www.readbyqxmd.com/read/28445740/right-brain-left-brain-in-depressive-disorders-clinical-and-theoretical-implications-of-behavioral-electrophysiological-and-neuroimaging-findings
#1
REVIEW
Gerard E Bruder, Jonathan W Stewart, Patrick J McGrath
The right and left side of the brain are asymmetric in anatomy and function. We review electrophysiological (EEG and event-related potential), behavioral (dichotic and visual perceptual asymmetry), and neuroimaging (PET, MRI, NIRS) evidence of right-left asymmetry in depressive disorders. Recent electrophysiological and fMRI studies of emotional processing have provided new evidence of altered laterality in depressive disorders. EEG alpha asymmetry and neuroimaging findings at rest and during cognitive or emotional tasks are consistent with reduced left prefrontal activity in depressed patients, which may impair downregulation of amygdala response to negative emotional information...
April 23, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/28445360/facial-danger-zones-techniques-to-maximize-safety-during-soft-tissue-filler-injections
#2
Jack F Scheuer, David A Sieber, Ronnie A Pezeshk, Andrew A Gassman, Carey F Campbell, Rod J Rohrich
Given the short recovery and immediate results, facial fillers have become a popular alternative to surgical rejuvenation of the face. Reported complications arising from facial filler injections include erythema, tissue loss, blindness, stroke, and even death. In this article, the authors describe their anatomically based techniques to minimize risk and maximize safety when injecting in the facial danger zones, including the glabella/brow, temporal region, perioral region, nasolabial fold, nose, and infraorbital region...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28444825/3-tesla-magnetic-resonance-imaging-study-of-the-normal-canine-femoral-and-sciatic-nerves
#3
Christine Sievert, Henning Richter, Dominic Gascho, Patrick R Kircher, Inés Carrera
Understanding the normal course and optimizing visualization of the canine peripheral nerves of the lumbar plexus, in particular the sciatic and the femoral nerves, is essential when interpreting images of patients with suspected peripheral neuropathies such as inflammatory or neoplastic conditions. The purpose of this prospective, anatomic study was to describe the magnetic resonance imaging (MRI) anatomy of the normal canine femoral and sciatic nerves and to define the sequences in which the nerves are best depicted...
April 25, 2017: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/28444772/multi-atlas-approach-with-local-registration-goodness-weighting-for-mri-based-electron-density-mapping-of-head-and-neck-anatomy
#4
Reza Farjam, Neelam Tyagi, Harini Veeraraghavan, Aditya Apte, Kristen Zakian, Margie A Hunt, Joseph O Deasy
PURPOSE: The growing use of magnetic resonance imaging (MRI) as a substitute for computed tomography-based treatment planning requires the development of effective algorithms to generate electron density maps for treatment planning and patient setup verification. The purpose of this work was to develop a method to synthesize computerized tomography (CT) for MR-only radiotherapy of head and neck cancer patients. METHODS: The algorithm is based on registration of multiple patient datasets containing both MRI and CT images (a "multi-atlas" algorithm)...
April 26, 2017: Medical Physics
https://www.readbyqxmd.com/read/28444749/transurethral-removal-of-a-cystic-urolith-in-a-mare-using-a-laparoscopic-specimen-pouch
#5
A J Williamson, A O McKinnon
CASE REPORT: Cystic urolithiasis is the most common form of urolithiasis reported in horses. In contrast to the gelding or stallion, clinical disease is less common in the mare and manual removal techniques are possible because of their shorter, wider urethral anatomy. However, these manual removal techniques can be traumatic and are limited by the size of the urolith. This report describes the use of a commercial laparoscopic specimen pouch to remove a cystic urolith in a mare. CONCLUSION: This approach may allow the extraction of larger uroliths per urethra in the mare, while affording some protection to the mucosa of the bladder neck and urethra...
May 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/28444713/do-we-assess-urethral-function-adequately-in-lutd-and-nlutd-ici-rs-2015
#6
REVIEW
Jerzy B Gajewski, Peter F W M Rosier, Sajjad Rahnama'i, Paul Abrams
INTRODUCTION: Urethral function, as well as anatomy, play a significant role in voiding reflex and abnormalities in one or both contribute to the pathophysiology of Lower Urinary Tract Dysfunction (LUTD). We have several diagnostic tools to assess the urethral function or dysfunction but the question remains, are these adequate? METHODS: This is a report of the proceedings of Think Tank P1: 'Do we assess urethral function adequately in LUTD and NLUTD?' from the annual International Consultation on Incontinence-Research Society, which took place September 22-24, 2014 in Bristol, UK...
April 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28444434/quantitative-anatomy-of-the-primary-ossification-center-of-the-femoral-shaft-in-human-fetuses
#7
Mariusz Baumgart, Marcin Wiśniewski, Magdalena Grzonkowska, Mateusz Badura, Bogdan Małkowski, Michał Szpinda
PURPOSE: Early clinical distinction of congenital defects in the femur is extremely important, as it determines the prognosis of the development of the lower limb. This study was performed to quantitatively examine the primary center of ossification in the femoral shaft with respect to its linear, planar, and volumetric parameters. MATERIALS AND METHODS: Using methods of CT, digital-image analysis, and statistics, the size of the primary ossification center of the femoral shaft in 47 spontaneously aborted human fetuses aged 17-30 weeks was studied...
April 25, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28444433/boundaries-of-the-thoracic-paravertebral-space-potential-risks-and-benefits-of-the-thoracic-paravertebral-block-from-an-anatomical-perspective
#8
Esther A C Bouman, Judith M Sieben, Andrea J R Balthasar, Elbert A Joosten, Hans-Fritz Gramke, Maarten van Kleef, Arno Lataster
PURPOSE: Thoracic paravertebral block (TPVB) may be an alternative to thoracic epidural analgesia. A detailed knowledge of the anatomy of the TPV-space (TPVS), content and adnexa is essential in understanding the clinical consequences of TPVB. The exploration of the posterior TPVS accessibility in this study allows (1) determination of the anatomical boundaries, content and adnexa, (2) description of an ultrasound-guided spread of low and high viscous liquid. METHODS: In two formalin-fixed specimens, stratification of the several layers and the 3D-architecture of the TPVS were dissected, observed and photographed...
April 25, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28444423/canal-of-nuck-hernia-a-multimodality-imaging-review
#9
REVIEW
Mitchell A Rees, James E Squires, Sameh Tadros, Judy H Squires
Canal of Nuck abnormalities are a rare but important cause of morbidity in girls, most often those younger than 5 years of age. The canal of Nuck, which is the female equivalent of the male processus vaginalis, is a protrusion of parietal peritoneum that extends through the inguinal canal and terminates in the labia majora. The canal typically obliterates early in life, but in some cases the canal can partially or completely fail to close, potentially resulting in a hydrocele or hernia of pelvic contents. Recognition of this entity is especially important in cases of ovarian hernia due to the risk of incarceration and torsion...
April 25, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28444382/xylem-traits-leaf-longevity-and-growth-phenology-predict-growth-and-mortality-response-to-defoliation-in-northern-temperate-forests
#10
Jane R Foster
Defoliation outbreaks are biological disturbances that alter tree growth and mortality in temperate forests. Trees respond to defoliation in many ways; some recover rapidly, while others decline gradually or die. Functional traits such as xylem anatomy, growth phenology or non-structural carbohydrate (NSC) storage could explain these responses, but idiosyncratic measures used by defoliation studies have frustrated efforts to generalize among species. Here, I test for functional differences with published growth and mortality data from 37 studies, including 24 tree species and 11 defoliators from North America and Eurasia...
April 21, 2017: Tree Physiology
https://www.readbyqxmd.com/read/28444241/cervical-spine-muscle-tendon-unit-length-differences-between-neutral-and-forward-head-postures-biomechanical-study-using-human-cadaveric-specimens
#11
Saeed Khayatzadeh, Olivia A Kalmanson, Dale Schuit, Robert M Havey, Leonard I Voronov, Alexander J Ghanayem, Avinash G Patwardhan
Background: Forward Head Posture (FHP) may be associated with neck pain and poor health-related quality of life. Literature describes only qualitative muscle length changes associated with FHP. Objective: To quantify how muscle-tendon unit lengths are altered when human cadaveric specimens are placed in alignments representing different severities of FHP. Design: Biomechanical study using 13 fresh-frozen cadaveric cervical spine specimens (Occiput-T1, 54±15yrs)...
April 21, 2017: Physical Therapy
https://www.readbyqxmd.com/read/28444223/gene-organizer-linking-genes-to-the-organs-they-affect
#12
David Gokhman, Guy Kelman, Adir Amartely, Guy Gershon, Shira Tsur, Liran Carmel
One of the biggest challenges in studying how genes work is understanding their effect on the physiology and anatomy of the body. Existing tools try to address this using indirect features, such as expression levels and biochemical pathways. Here, we present Gene ORGANizer (geneorganizer.huji.ac.il), a phenotype-based tool that directly links human genes to the body parts they affect. It is built upon an exhaustive curated database that links >7000 genes to ∼150 anatomical parts using >150 000 gene-organ associations...
April 21, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28444013/third-molars-and-premolars-extraction-in-conventional-orthodontics-and-in-treatments-based-on-maxillary-bone-remodeling-with-temporary-anchorage-indications-and-care
#13
Alberto Consolaro
A bone is an anatomic structure in constant remodeling, with different, mutant and wonderfully inconstant designs. With every new and immediate functional demand, there are changes in cortical thickness, trabecular bone density and also in direction and size of trabeculae. Bones' non-stopping search is for adjusting to the functions induced by forces and movements required by a certain life style. Conventional orthodontic planning or with temporary anchorage based on bone remodeling takes into consideration the spaces that are - or may be - occupied by the teeth, in the formation of a functional and esthetic dental arch for the patient...
February 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28443600/retroauricular-approach-for-targeted-cochlear-therapy-experiments-in-wistar-albino-rats
#14
Selçuk Mülazimoğlu, Emre Ocak, Gülşah Kaygusuz, Mustafa Kürşat Gökcan
BACKGROUND: As the idea of stem cell technology in the treatment of sensorial hearing loss has emerged over the past decades, the need for in vivo models for related experiments becomes explicit. One of the most common experimental models for inner ear stem cell delivery experiments is the Wistar albino rat (WAR). AIMS: To investigate the surgical anatomy of the temporal bone of the WAR with respect to the dissection steps, operative techniques, and potential pitfalls from surgery...
April 6, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28443382/diagnostic-imaging-modalities-and-surgical-anatomy-of-the-temporomandibular-joint-in-rabbits
#15
Michal Kyllar, Barbora Putnová, Vladimír Jekl, Ladislav Stehlík, Marcela Buchtová, Jan Štembírek
The temporomandibular joint (TMJ) is a condylar synovial joint that, together with the masticatory muscles, controls mandibular movement during mastication. The rabbit is often used as a model species for studying the mechanisms of TMJ diseases, and in regenerative research. However, there are significant differences between rabbit and human TMJs that should be taken into account before using this model for experimental research. Here, we use several analytical approaches (radiography, computed tomography and magnetic resonance imaging) to enable a detailed description and analysis of the rabbit TMJ morphology...
January 1, 2017: Laboratory Animals
https://www.readbyqxmd.com/read/28442732/human-bipedal-instability-in-tree-canopy-environments-is-reduced-by-light-touch-fingertip-support
#16
L Johannsen, S R L Coward, G R Martin, A M Wing, A van Casteren, W I Sellers, A R Ennos, R H Crompton, S K S Thorpe
Whether tree canopy habitats played a sustained role in the ecology of ancestral bipedal hominins is unresolved. Some argue that arboreal bipedalism was prohibitively risky for hominins whose increasingly modern anatomy prevented them from gripping branches with their feet. Balancing on two legs is indeed challenging for humans under optimal conditions let alone in forest canopy, which is physically and visually highly dynamic. Here we quantify the impact of forest canopy characteristics on postural stability in humans...
April 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28442696/surgical-management-of-pediatric-glaucoma
#17
Ingrid Chang, Joseph Caprioli, Yvonne Ou
Pediatric glaucoma surgery is challenging because of the differences in anatomy from the adult, differences in the behavior of the tissues of a child's glaucomatous eye, the variety in causes of the disease, and difficulties with postoperative management. Goniotomy and trabeculotomy are the preferred initial treatments for primary congenital glaucoma. Trabeculectomy with adjunctive mitomycin C is more likely to succeed in older, phakic patients, but carries the long-term risk of bleb-associated endophthalmitis...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28442694/surgical-treatment-of-angle-closure-glaucoma
#18
Dawn Lim, Maria Cecilia Aquino, Paul Chew
Advances in anterior segment imaging modalities have contributed new insights towards a better understanding of the various mechanisms of angle-closure glaucoma (ACG). This development is key to good decision making when confronted with angle-closure patients needing appropriate therapy. Surgical management of ACG remains an integral part of glaucoma patient care. The distinctive anatomy of angle-closure eyes and the few objective lines of evidence to support the effectiveness of the different surgical treatment options present a challenge to glaucoma surgeons...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28442687/postoperative-management-of-penetrating-and-nonpenetrating-external-filtering-procedures
#19
Paolo Bettin, Federico Di Matteo
Correct postoperative management is fundamental to prevent and treat complications and to optimize the success of filtering surgery. Timely control visits and appropriate actions and prescriptions ensure the best outcomes, allow recovery from a number of untoward events, and can reestablish filtration when failure seems imminent. In contrast, a slack follow-up and wrong interventions or prescriptions can lead to the failure of any surgery, no matter how accurately it was carried out, sometimes jeopardizing vision and even the anatomy of the globe...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28442330/symptomatic-carotid-artery-disease-revascularization
#20
REVIEW
Piero Montorsi, Stefano Galli, Paolo M Ravagnani, Marco Roffi
Patients with symptomatic carotid artery disease should be managed by a multidisciplinary team including neurologists, vascular surgeons and interventionalists. Duplex ultrasound is the most widely used diagnostic modality to assess carotid disease, followed by additional imaging tests (CT- or MR-angiography) to confirm the severity of the stenosis, detect brain lesions, and assess intracranial circulation as well as the supra-aortic anatomy. Although overall randomized trial results favored (CEA) over carotid artery stenting (CAS) in symptomatic patients, this was likely related to the insufficient expertise of the endovascular specialists in several of the trials...
April 22, 2017: Progress in Cardiovascular Diseases
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