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https://www.readbyqxmd.com/read/28917281/magnetic-resonance-thermometry-and-laser-interstitial-thermal-therapy-for-brain-tumors
#1
REVIEW
Danilo Silva, Mayur Sharma, Rupa Juthani, Antonio Meola, Gene H Barnett
Recent technological advancements in intraoperative imaging are shaping the way for a new era in brain tumor surgery. Magnetic resonance thermometry has provided intraoperative real-time imaging feedback for safe and effective application of laser interstitial thermal therapy (LITT) in neuro-oncology. Thermal ablation has also established itself as a surgical option in epilepsy surgery and is currently used in spine oncology with promising results. This article reviews the principles and rationale as well as the clinical application of LITT for brain tumors...
October 2017: Neurosurgery Clinics of North America
https://www.readbyqxmd.com/read/28904458/can-transcranial-color-doppler-spectral-signatures-be-a-novel-biomarker-for-monitoring-cerebrovascular-autoregulation-and-intracranial-pressure-a-speculative-synthesis
#2
Sandhya Mangalore, Kotresh, Rakshith Srinivasa, Alangar Sathyaranjandas Hegde, Rangashetty Srinivasa
BACKGROUND: Trans Cranial Colour Doppler (TCCD) has been extensively used in various neurological and neurosurgical conditions causing severe raise in the intracranial pressure (ICP). MATERIAL AND METHOD: Our study explores the sequential evolution of TCCD flow pattern by correlating with pupillary reactivity, Glasgow coma scale (GCS), and imaging. Our cohort consisted of thirty patients with ten patients in each subgroup admitted to the neuro-Intensive Care Unit (NICU) for various neurological and neurosurgical causes...
July 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28903967/long-term-follow-up-of-benign-positional-vertical-opsoclonus-in-infants-retrospective-cohort
#3
Amir Sternfeld, Daniella Lobel, Hana Leiba, Judith Luckman, Shalom Michowiz, Nitza Goldenberg-Cohen
BACKGROUND/AIMS: Benign positional vertical opsoclonus in infants, also described as paroxysmal tonic downgaze, is an unsettling phenomenon that leads to extensive work-up, although benign course has been reported in sporadic cases. We describe long-term follow-up of a series of infants with the phenomenon. METHODS: This retrospective cohort included all infants diagnosed with rapid downgaze eye movement in 2012-2015 and followed until 2016. The databases of two medical centres were retrospectively reviewed...
September 13, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28887978/neuro-differentiated-ntera2-cancer-stem-cells-encapsulated-in-alginate-beads-first-evidence-of-biological-functionality
#4
Ilaria Cacciotti, Claudia Ceci, Alessandra Bianco, Giuseppa Pistritto
The present communication investigates an application of alginate encapsulation technology to the differentiation of the embryonic cancer stem NTera2 cells (NT2) into dopamine-producing cells. The encapsulation of cells in polymeric beads allows their immune isolation and makes them eligible for transplantation, thus representing a promising biotech tool for the delivery of biologically active compounds to the brain. The polysaccharide alginate is one of the most commonly used material for this procedure since it is well tolerated by various tissues, including the brain...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28875373/differentiating-brain-radionecrosis-from-tumour-recurrence-a-role-for-contrast-enhanced-ultrasound
#5
Luca Mattei, Francesco Prada, Marcello Marchetti, Paola Gaviani, Francesco DiMeco
Differentiating radionecrosis from tumour recurrence is a major issue in neuro-oncology. Conventional imaging is far from being validated as an alternative to histological assessment. We report the case of a patient operated on for suspected recurrence of brain metastasis 9 months after cyberknife radiosurgery. While magnetic resonance imaging showed strong enhancement of the lesion, intraoperative contrast-enhanced ultrasonography (CEUS) surprisingly did not-different from what is expected for brain metastases...
September 5, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28871996/prognostic-relevance-of-treatment-failure-patterns-in-pediatric-high-grade-glioma-is-there-a-role-for-a-revised-failure-classification-system
#6
John T Lucas, David A Cooper, Scott Hwang, Christopher Tinkle, Xingyu Li, Yimei Li, Brent Orr, Thomas E Merchant, Alberto Broniscer
PURPOSE: We sought to investigate the pattern of treatment failure with respect to anatomic extent, radiation dose, and criteria for failure according to the Response Assessment in Neuro-Oncology (RANO). We evaluated the corresponding prognostic significance of these factors in patients with pediatric high-grade glioma (pHGG). METHODS AND MATERIALS: Fifty-six patients with pHGG were enrolled in an institutional phase 1 to 2 prospective trial that included maximal safe resection and radiation therapy with concurrent and adjuvant erlotinib...
October 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28870591/hemorrhage-recurrence-risk-factors-in-cerebral-amyloid-angiopathy-comparative-analysis-of-the-overall-small-vessel-disease-severity-score-versus-individual-neuroimaging-markers
#7
Gregoire Boulouis, Andreas Charidimou, Marco Pasi, Duangnapa Roongpiboonsopit, Li Xiong, Eitan Auriel, Ellis S van Etten, Sergi Martinez-Ramirez, Alison Ayres, Anastasia Vashkevich, Kristin M Schwab, Jonathan Rosand, Joshua N Goldstein, M Edip Gurol, Steven M Greenberg, Anand Viswanathan
INTRODUCTION: An MRI-based score of total small vessel disease burden (CAA-SVD-Score) in cerebral amyloid angiopathy (CAA) has been demonstrated to correlate with severity of pathologic changes. Evidence suggests that CAA-related intracerebral hemorrhage (ICH) recurrence risk is associated with specific disease imaging manifestations rather than overall severity. We compared the correlation between the CAA-SVD-Score with the risk of recurrent CAA-related lobar ICH versus the predictive role of each of its components...
September 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28869961/contribution-of-neuro-imaging-for-prediction-of-functional-recovery-after-ischemic-stroke
#8
Wolf-Dieter Heiss
Prediction measures of recovery and outcome after stroke perform with only modest levels of accuracy if based only on clinical data. Prediction scores can be improved by including morphologic imaging data, where size, location, and development of the ischemic lesion is best documented by magnetic resonance imaging. In addition to the primary lesion, the involvement of fiber tracts contributes to prognosis, and consequently the use of diffusion tensor imaging (DTI) to assess primary and secondary pathways improves the prediction of outcome and of therapeutic effects...
September 5, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28864913/pancreatic-neuro-insular-network-in-young-mice-revealed-by-3d-panoramic-histology
#9
Shiue-Cheng Tang, Chia-Ning Shen, Pei-Yu Lin, Shih-Jung Peng, Hung-Jen Chien, Ya-Hsien Chou, Chester E Chamberlain, Pankaj J Pasricha
AIMS/HYPOTHESIS: It has been proposed that the neuro-insular network enables rapid, synchronised insulin secretion. However, to date, acquiring the pancreatic tissue map to study the neural network remains a challenging task as there is a lack of feasible approaches for large-scale tissue analysis at the organ level. Here, we have developed 3-dimensional (3D) panoramic histology to characterise the pancreatic neuro-insular network in young mice. METHODS: Pancreases harvested from young wild-type B6 mice (3 and 8 weeks old) and db/db mice (3 weeks old; db/db vs db/+) were used to develop 3D panoramic histology...
September 1, 2017: Diabetologia
https://www.readbyqxmd.com/read/28863139/gut-microbiome-in-adhd-and-its-relation-to-neural-reward-anticipation
#10
Esther Aarts, Thomas H A Ederveen, Jilly Naaijen, Marcel P Zwiers, Jos Boekhorst, Harro M Timmerman, Sanne P Smeekens, Mihai G Netea, Jan K Buitelaar, Barbara Franke, Sacha A F T van Hijum, Alejandro Arias Vasquez
BACKGROUND: Microorganisms in the human intestine (i.e. the gut microbiome) have an increasingly recognized impact on human health, including brain functioning. Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder associated with abnormalities in dopamine neurotransmission and deficits in reward processing and its underlying neuro-circuitry including the ventral striatum. The microbiome might contribute to ADHD etiology via the gut-brain axis. In this pilot study, we investigated potential differences in the microbiome between ADHD cases and undiagnosed controls, as well as its relation to neural reward processing...
2017: PloS One
https://www.readbyqxmd.com/read/28863008/olfactory-dysfunction-associated-with-neuro-beh%C3%A3-et-disease
#11
Remzi Doğan, Burak Ertaş, Berke Özücer, Erkingul Birday, Orhan Özturan, Bayram Veyseller
INTRODUCTION: Neurologic involvement associated with Behçet disease (BD) is defined as a different entity: Neuro-Behçet disease (NBD). Behçet disease presents with olfactory dysfunction. It is not known whether this is the consequence of mucosal involvement or neurologic involvement. OBJECTIVE: The aim of this study was to investigate whether olfactory dysfunction was further aggravated as the result of neurologic involvement. METHODS: Sixteen patients diagnosed with NBD and 16 healthy control patients with similar demographic characteristics were recruited as the healthy control group...
August 31, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28858414/association-of-intraocular-pressure-related-factors-and-retinal-vessel-diameter-with-optic-disc-rim-area-in-subjects-with-and-without-primary-open-angle-glaucoma
#12
Qing Zhang, Catherine Jan, Chun Yu Guo, Feng Hua Wang, Yuan Bo Liang, Kai Cao, Zheng Zhang, Di Ya Yang, Ravi Thomas, Ning Li Wang
IMPORTANCE: The data may supports the notion that the mechanical and vascular mechanisms of glaucomatous injury are intertwined BACKGROUND: To study the association of intraocular pressure (IOP) related factors, IOP, trans-lamina cribrosa pressure difference (TLCPD), cerebrospinal fluid pressure (CSFP) and retinal vessel diameters (RVD), central retinal arteriolar equivalent (CRAE), central retinal venular equivalent (CRVE) with neuro-retinal rim area (RA). DESIGN: A population-based, cross-sectional study PARTICIPANTS: 6830 people aged 30 years and over...
August 31, 2017: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/28856542/imaging-behavioural-complications-of-parkinson-s-disease
#13
Mikaeel Valli, Alexander Mihaescu, Antonio P Strafella
In addition to motor symptoms, behavioural complications are commonly found in patients with Parkinson's disease (PD). Behavioural complications, including depression, anxiety, apathy, impulse control disorder and psychosis, together have a large impact on PD patient's quality of life. Many neuroimaging studies using PET, SPECT and MRI techniques have been conducted to study the underlying neural mechanisms of PD pathogenesis and pathophysiology in relation to its behavioural complications. This review will survey these PET, SPECT and MRI studies to describe the current understanding of the neuro-chemical, functional and structural changes associated with behavioural complications in PD patients...
August 30, 2017: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/28855429/acute-blindness-in-a-dog-with-acinetobacter-associated-postencephalitic-hydrocephalus
#14
Jung-Hyun Kim, Ji-Hee Jeon, Kang-Hyo Park, Hun-Young Yoon, Joon-Young Kim
A 10-month-old male Welsh Corgi with a history of acute blindness underwent neuro-ophthalmological testing and magnetic resonance imaging (MRI). Vision testing revealed complete visual deficits but the electroretinograph and pupillary light reflex were normal in both eyes. The motor and sensory functions of the eyelids and eyes were also normal. The MRI revealed compression of the optic chiasm caused by severe ventriculomegaly in the lateral and third ventricles. Such lesions are associated with inflammatory stenotic lesions in the mesencephalic aqueduct...
August 28, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28854256/peripheral-denervation-participates-in-heterotopic-ossification-in-a-spinal-cord-injury-model
#15
Charlotte Debaud, Marjorie Salga, Laurent Begot, Xavier Holy, Malha Chedik, Nicolas de l'Escalopier, Fréderic Torossian, Jean-Pierre Levesque, Jean-Jacques Lataillade, Marie-Caroline Le Bousse-Kerdilès, François Genêt
We previously reported the development of a new acquired neurogenic HO (NHO) mouse model, combining spinal cord transection (SCI) and chemical muscle injury. Pathological mechanisms responsible for ectopic osteogenesis after central neurological damage are still to be elucidated. In this study, we first hypothesized that peripheral nervous system (PNS) might convey pathological signals from injured spinal cord to muscles in NHO mouse model. Secondly, we sought to determine whether SCI could lead to intramuscular modifications of BMP2 signaling pathways...
2017: PloS One
https://www.readbyqxmd.com/read/28852792/human-pancreatic-neuro-insular-network-in-health-and-fatty-infiltration
#16
Shiue-Cheng Tang, Luc Baeyens, Chia-Ning Shen, Shih-Jung Peng, Hung-Jen Chien, David W Scheel, Chester E Chamberlain, Michael S German
AIMS/HYPOTHESIS: Identification of a pancreatic neuro-insular network in mice suggests that a similar integration of islets and nerves may be present in the human pancreas. To characterise the neuro-insular network and the intra-pancreatic ganglia in a clinically related setting, we examined human pancreases in health and with fatty infiltration via 3-dimensional (3D) histology and compared the human pancreatic microenvironment with its counterpart in mice. METHODS: Human pancreatic specimens from individuals with normal BMI, high BMI (≥ 25) and type 2 diabetes were used to investigate the neuro-insular network...
August 29, 2017: Diabetologia
https://www.readbyqxmd.com/read/28842741/response-assessment-in-neuro-oncology-criteria-contrast-enhancement-and-perfusion-mri-for-assessing-progression-in-glioblastoma
#17
Fatima Tensaouti, Jonathan Khalifa, Amélie Lusque, Benjamin Plas, Jean Albert Lotterie, Isabelle Berry, Anne Laprie, Elizabeth Cohen-Jonathan Moyal, Vincent Lubrano
PURPOSE: The purpose of the study was to evaluate Response Assessment in Neuro-Oncology (RANO) criteria in glioblastoma multiforme (GBM), with respect to the Macdonald criteria and changes in contrast-enhancement (CE) volume. Related variations in relative cerebral blood volume (rCBV) were investigated. METHODS: Forty-three patients diagnosed between 2006 and 2010 were included. All underwent surgical resection, followed by temozolomide-based chemoradiation. MR images were retrospectively reviewed...
August 25, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28841802/advanced-magnetic-resonance-imaging-in-glioblastoma-a-review
#18
Gaurav Shukla, Gregory S Alexander, Spyridon Bakas, Rahul Nikam, Kiran Talekar, Joshua D Palmer, Wenyin Shi
Glioblastoma, the most common and most rapidly progressing primary malignant tumor of the central nervous system, continues to portend a dismal prognosis, despite improvements in diagnostic and therapeutic strategies over the last 20 years. The standard of care radiographic characterization of glioblastoma is magnetic resonance imaging (MRI), which is a widely utilized examination in the diagnosis and post-treatment management of patients with glioblastoma. Basic MRI modalities available from any clinical scanner, including native T1-weighted (T1w) and contrast-enhanced (T1CE), T2-weighted (T2w), and T2-fluid-attenuated inversion recovery (T2-FLAIR) sequences, provide critical clinical information about various processes in the tumor environment...
August 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/28841799/updated-response-assessment-criteria-for-high-grade-glioma-beyond-the-macdonald-criteria
#19
Mayur Sharma, Rupa Gopalan Juthani, Michael A Vogelbaum
High-grade glioma continues to be a challenging disease with few effective treatment options and a poor prognosis, necessitating intensive research into alternate therapies. The Response Assessment in Neuro-Oncology (RANO) committee was formed to create a robust endpoint assessment criteria in Neuro-Oncology in order to streamline the assessment of new therapies in a uniform fashion. The aim of this committee is to create standardized guidelines to assess clinical and imaging response in the treatment of brain tumors, which can then be applied in clinical trials...
August 2017: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/28840169/assessment-of-organ-and-effective-dose-when-using-region-of-interest-attenuators-in-cone-beam-ct-and-interventional-fluoroscopy
#20
Zhenyu Xiong, Sarath Vijayan, Stephen Rudin, Daniel R Bednarek
In some medical-imaging procedures using cone-beam CT (CBCT) and fluoroscopy, only the center of the field of view (FOV) may be needed to be visualized with optimal image quality. To reduce the dose to the patient while maintaining visualization of the entire FOV, a Cu attenuator with a circular aperture for the region of interest (ROI) is used. The potential organ and effective dose reductions of ROI imaging when applied to CBCT and interventional fluoroscopic procedures were determined using EGSnrc Monte Carlo code...
July 2017: Journal of Medical Imaging
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