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https://www.readbyqxmd.com/read/29406414/pediatric-musculoskeletal-interventional-mri
#1
Roberto Blanco Sequeiros, Juha-Jaakko Sinikumpu, Risto Ojala, Jyri Järvinen, Jan Fritz
Minimally invasive procedures play a crucial role in the diagnosis and treatment of many pediatric musculoskeletal conditions. Although computed tomography and fluoroscopy are commonly used for image guidance, the associated exposure to ionizing radiation is especially concerning in pediatric patients. Ultrasonography may be used successfully in a subset of interventions, but it is often not useful for complex, deep, and osseous targets. Interventional magnetic resonance imaging (iMRI) facilitates targeting and treatment of musculoskeletal lesions at many locations with high accuracy due to its excellent tissue contrast...
February 2018: Topics in Magnetic Resonance Imaging: TMRI
https://www.readbyqxmd.com/read/29406408/imri-symposium-past-present-future
#2
Clare Tempany, Jon S Lewin, Thomas Kahn
No abstract text is available yet for this article.
February 2018: Topics in Magnetic Resonance Imaging: TMRI
https://www.readbyqxmd.com/read/29368236/experimental-study-of-sector-and-linear-array-ultrasound-accuracy-and-the-influence-of-navigated-3d-reconstruction-as-compared-to-mri-in-a-brain-tumor-model
#3
Max Siekmann, Thomas Lothes, Ralph König, Christian Rainer Wirtz, Jan Coburger
PURPOSE: Currently, intraoperative ultrasound in brain tumor surgery is a rapidly propagating option in imaging technology. We examined the accuracy and resolution limits of different ultrasound probes and the influence of 3D-reconstruction in a phantom and compared these results to MRI in an intraoperative setting (iMRI). METHODS: An agarose gel phantom with predefined gel targets was examined with iMRI, a sector (SUS) and a linear (LUS) array probe with two-dimensional images...
January 24, 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29355914/intraoperative-imaging-technology-to-maximise-extent-of-resection-for-glioma
#4
REVIEW
Michael D Jenkinson, Damiano Giuseppe Barone, Andrew Bryant, Luke Vale, Helen Bulbeck, Theresa A Lawrie, Michael G Hart, Colin Watts
BACKGROUND: Extent of resection is considered to be a prognostic factor in neuro-oncology. Intraoperative imaging technologies are designed to help achieve this goal. It is not clear whether any of these sometimes very expensive tools (or their combination) should be recommended as standard care for people with brain tumours. We set out to determine if intraoperative imaging technology offers any advantage in terms of extent of resection over standard surgery and if any one technology was more effective than another...
January 22, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29351243/awake-versus-asleep-deep-brain-stimulation-surgery-technical-considerations-and-critical-review-of-the-literature
#5
REVIEW
Ryan B Kochanski, Sepehr Sani
Advancements in neuroimaging have led to a trend toward direct, image-based targeting under general anesthesia without the use of microelectrode recording (MER) or intraoperative test stimulation, also referred to as "asleep" deep brain stimulation (DBS) surgery. Asleep DBS, utilizing imaging in the form of intraoperative computed tomography (iCT) or magnetic resonance imaging (iMRI), has demonstrated reliable targeting accuracy of DBS leads implanted within the globus pallidus and subthalamic nucleus while also improving clinical outcomes in patients with Parkinson's disease...
January 19, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29335413/heliconical-smectic-phases-formed-by-achiral-molecules
#6
Jordan P Abberley, Ross Killah, Rebecca Walker, John M D Storey, Corrie T Imrie, Mirosław Salamończyk, Chenhui Zhu, Ewa Gorecka, Damian Pociecha
Chiral symmetry breaking in soft matter is a hot topic of current research. Recently, such a phenomenon was found in a fluidic phase showing orientational order of molecules-the nematic phase; although built of achiral molecules, the phase can exhibit structural chirality-average molecular direction follows a short-pitch helix. Here, we report a series of achiral asymmetric dimers with an odd number of atoms in the spacer, which form twisted structures in nematic as well as in lamellar phases. The tight pitch heliconical nematic (NTB) phase and heliconical tilted smectic C (SmCTB) phase are formed...
January 15, 2018: Nature Communications
https://www.readbyqxmd.com/read/29260585/intraoperative-visualisation-of-functional-structures-facilitates-safe-frameless-stereotactic-biopsy-in-the-motor-eloquent-regions-of-the-brain
#7
Jia-Shu Zhang, Ling Qu, Qun Wang, Wei Jin, Yuan-Zheng Hou, Guo-Chen Sun, Fang-Ye Li, Xin-Guang Yu, Ban-Nan Xu, Xiao-Lei Chen
BACKGROUND: For stereotactic brain biopsy involving motor eloquent regions, the surgical objective is to enhance diagnostic yield and preserve neurological function. To achieve this aim, we implemented functional neuro-navigation and intraoperative magnetic resonance imaging (iMRI) into the biopsy procedure. The impact of this integrated technique on the surgical outcome and postoperative neurological function was investigated and evaluated. METHOD: Thirty nine patients with lesions involving motor eloquent structures underwent frameless stereotactic biopsy assisted by functional neuro-navigation and iMRI...
December 20, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29242141/molecular-and-epidemiological-evidence-of-patient-to-patient-hepatitis-c-virus-transmission-in-a-scottish-emergency-department
#8
I Johannessen, J Danial, D B Smith, J Richards, L Imrie, A Rankin, L J Willocks, C Evans, C Leen, P Gibson, P Simmonds, D Goldberg, A McCallum, K Roy
BACKGROUND: Transmission of hepatitis C virus (HCV) in the health care setting is rare. Routine infection prevention and control (IPC) measures mean this should be a preventable never event. This paper investigates the diagnosis of acute healthcare associated HCV infection. METHODS: Epidemiological and molecular investigation of a case of acute HCV infection associated with nosocomial exposure. RESULTS: Detailed investigation of the treatment history of a patient with acute HCV infection identified transmission from a co-attending patient in an Emergency Department as the likely source; this possibility was confirmed by virus sequence analysis...
December 11, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29172852/sumoylation-of-the-plant-clock-transcription-factor-cca1-suppresses-dna-binding
#9
Louise L Hansen, Lisa Imrie, Thierry Le Bihan, Harrold A van den Burg, Gerben van Ooijen
In plants, the circadian clock regulates the expression of one-third of all transcripts and is crucial to virtually every aspect of metabolism and growth. We now establish sumoylation, a posttranslational protein modification, as a novel regulator of the key clock protein CCA1 in the model plant Arabidopsis. Dynamic sumoylation of CCA1 is observed in planta and confirmed in a heterologous expression system. To characterize how sumoylation might affect the activity of CCA1, we investigated the properties of CCA1 in a wild-type plant background in comparison with ots1 ots2, a mutant background showing increased overall levels of sumoylation...
November 1, 2017: Journal of Biological Rhythms
https://www.readbyqxmd.com/read/29161785/intraoperative-mri-for-resection-of-intracranial-meningiomas
#10
Shamik Chakraborty, Salvatore Zavarella, Sussan Salas, Michael Schulder
Objective: To examine whether intraoperative MRI can enhance safety and extent of resection of complex intracranial meningiomas, given its positive role in the resection of malignant brain tumors and pituitary tumors. Methods: Over a ten-year period, 70 operations were performed on 66 patients with intracranial meningiomas using the compact, mobile PoleStar N20 iMRI navigation system. A retrospective review was conducted examining patient demographics, surgical characteristics, and outcomes...
November 2017: Journal of Experimental Therapeutics & Oncology
https://www.readbyqxmd.com/read/29159426/an-initial-cost-effectiveness-analysis-of-intraoperative-magnetic-resonance-imaging-imri-in-pediatric-epilepsy-surgery
#11
Matthew F Sacino, Sean S Huang, Robert F Keating, William D Gaillard, Chima O Oluigbo
PURPOSE: Previous studies have illustrated the clinical utility of the addition of intraoperative magnetic resonance imaging (iMRI) to conventional microsurgical resection. While iMRI requires initial capital cost investment, long-term reduction in costly follow-up management and reoperation costs may prove economically efficacious. The objective of this study is to investigate the cost-effectiveness of the addition of iMRI utilization versus conventional microsurgical techniques in focal cortical dysplasia (FCD) resection in pediatric patients with medically refractory epilepsy...
November 20, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/29138078/is-there-an-indication-of-intraoperative-mri-in-subtotal-resection-of-glioblastoma-a-multicenter-retrospective-comparative-analysis
#12
Jan Coburger, Javier Segovia von Riehm, Oliver Ganslandt, Christian Rainer Wirtz, Mirjam Renovanz
INTRODUCTION: Surgery in patients with highly eloquent glioblastoma (GB) remains challenging. OBJECTIVE: To evaluate influence of use of iMRI on extent of resection (EoR), clinical outcome and survival in GB-patients with preoperatively intended subtotal resection (STR). METHODS: We performed a retrospective assessment in 3 neurosurgical centers(2008-2013). All patients with primary GB, unilocular growth, and adjuvant radiochemotherapy in whom a STR was intended were included...
November 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29130989/preoperative-nutritional-optimization-for-crohn-s-disease-patients-can-improve-surgical-outcome
#13
Yael Dreznik, Nir Horesh, Mordechai Gutman, Aviad Gravetz, Imri Amiel, Harel Jacobi, Oded Zmora, Danny Rosin
BACKGROUND: Preoperative preparation of patients with Crohn's disease is challenging and there are no specific guidelines regarding nutritional support. The aim of this study was to assess whether preoperative nutritional support influenced the postoperative outcome. METHODS: A retrospective, cohort study including all Crohn's disease patients who underwent abdominal surgery between 2008 and 2014 was conducted. Patients' characteristics and clinical and surgical data were recorded and analyzed...
November 1, 2017: Digestive Surgery
https://www.readbyqxmd.com/read/29129654/corrigendum-to-cause-of-death-in-patients-with-chronic-visceral-and-chronic-neurovisceral-acid-sphingomyelinase-deficiency-niemann-pick-disease-type-b-and-b-variant-literature-review-and-report-of-new-cases-mol-genet-metab-118-2016-206-213
#14
David Cassiman, Seymour Packman, Bruno Bembi, Hadhami Ben Turkia, Moeenaldeen Al-Sayed, Manuel Schiff, Jackie Imrie, Paulina Mabe, Tsutomu Takahashi, Karl Eugen Mengel, Roberto Giugliani, Gerald F Cox
No abstract text is available yet for this article.
November 9, 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/29118241/temporal-shifts-in-intraguild-predation-pressure-between-beluga-whales-and-greenland-halibut-in-a-changing-arctic
#15
David J Yurkowski, Nigel E Hussey, Aaron T Fisk, Kendra L Imrie, Ross F Tallman, Steven H Ferguson
Asymmetrical intraguild predation (AIGP), which combines both predation and competition between predator species, is pervasive in nature with relative strengths varying by prey availability. But with species redistributions associated with climate change, the response by endemic predators within an AIGP context to changing biotic-abiotic conditions over time (i.e. seasonal and decadal) has yet to be quantified. Furthermore, little is known on AIGP dynamics in ecosystems undergoing rapid directional change such as the Arctic...
November 2017: Biology Letters
https://www.readbyqxmd.com/read/29114284/intraoperative-magnetic-resonance-imaging-for-cranial-and-spinal-cases-using-preexisting-c-shaped-three-side-open-0-2-tesla-magnetic-resonance-imaging
#16
Vinod Kumar Tewari, Ravindra Tripathi, Subodh Aggarwal, Mazhar Hussain, Hari Kishan Das Gupta
Background: The existing Intraoperative MRI (IMRI) of developed countries is too costly to be affordable in any developing country and out of the reach of common and poor people of developing country at remote areas. We have used the pre-existing (refurbished) 3 side open "C" shaped 0.2 Tesla MRI for IMRI in a very remote area. Materials and Methods: In this technique the 0.2 Tesla MRI and the operating theatre were merged. MRI table was used as an operation table...
October 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/29101863/contemporary-use-of-intraoperative-imaging-in-glioma-surgery-a-survey-among-eans-members
#17
Jan Coburger, Arya Nabavi, Ralph König, Christian Rainer Wirtz, Andrej Pala
OBJECTIVES: In glioma surgery, intraoperative imaging is regarded highly valuable to improve extent of resection. Current distribution of intraoperative imaging techniques is largely unknown. Further, controversy exists which method might be most beneficial. PATIENTS AND METHODS: We performed a web-based survey among members of the European Association of Neurological Surgeons(EANS) from April to May 2017. Our questionnaire included intraoperative MRI(iMRI), 5-aminolevulinic acid(5-ALA), intraoperative ultrasound(iUS),Na-Fluorescein and intraoperative CT(iCT)...
December 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29076979/the-impact-of-intraoperative-magnetic-resonance-imaging-on-patient-safety-management-during-awake-craniotomy
#18
Kotoe Kamata, Takashi Maruyama, Hiroshi Iseki, Minoru Nomura, Yoshihiro Muragaki, Makoto Ozaki
BACKGROUND: Awake craniotomy paired with intraoperative magnetic resonance imaging (iMRI) is now the established technique for maximizing surgical resection, while preserving neurological function. However, leaving an unsecured airway patient in the iMRI gantry represents considerable risk. Our study aimed at identifying the incidence of critical adverse events in unsecured airway patients during iMRI as part of awake craniotomy. MATERIALS AND METHODS: We conducted a clinical chart review of consecutive awake craniotomies performed between November 1999 and December 2015...
October 25, 2017: Journal of Neurosurgical Anesthesiology
https://www.readbyqxmd.com/read/29072577/effect-of-increasing-disorder-on-domains-of-the-two-dimensional-coulomb-glass
#19
Preeti Bhandari, Vikas Malik
We have studied a two dimensional lattice model of Coulomb glass for a wide range of disorders at T ∼ 0. The system was first annealed using Monte Carlo simulation. Further minimization of the total energy of the system was done using Baranovskii et al algorithm followed by cluster flipping to obtain the pseudo ground states. We have shown that the energy required to create a domain of linear size L in d dimensions is proportional to L<sup>d-1</sup>. Using Imry-Ma arguments given for random field Ising model, one gets critical dimension d<sub>c</sub> ≥ 2 for Coulomb glass...
October 26, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29044370/the-ecology-and-epidemiology-of-ross-river-and-murray-valley-encephalitis-viruses-in-western-australia-examples-of-one-health-in-action
#20
John S Mackenzie, Michael D A Lindsay, David W Smith, Allison Imrie
Arboviruses are maintained and transmitted through an alternating biological cycle in arthropods and vertebrates, with largely incidental disease in humans and animals. As such, they provide excellent examples of One Health, as their health impact is inextricably linked to their vertebrate hosts, their arthropod vectors and the environment. Prevention and control requires a comprehensive understanding of these interactions, and how they may be effectively and safely modified. This review concentrates on human disease due to Ross River and Murray Valley encephalitis viruses, the two major arboviral pathogens in Australia...
June 1, 2017: Transactions of the Royal Society of Tropical Medicine and Hygiene
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