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Mri and anesthesia

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https://www.readbyqxmd.com/read/28325486/mri-utilization-and-the-associated-use-of-sedation-and-anesthesia-in-a-pediatric-aco
#1
Joshua C Uffman, Dmitry Tumin, Vidya Raman, Arlyne Thung, Brent Adler, Joseph D Tobias
BACKGROUND AND OBJECTIVES: MRI is commonly used in the pediatric population and often requires sedation or general anesthesia to complete. This study used data from a pediatric accountable care organization (ACO) to investigate trends in MRI utilization and in the requirement for anesthesia to complete MRI examinations. METHODS: The Partners for Kids (PFK) ACO claims database was queried for MRI examination encounters involving patients 0 to 18 years old from 2009 to 2014, with utilization expressed as encounters per 10,000 PFK members-months...
March 15, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28323163/cerebrospinal-and-interstitial-fluid-transport-via-the-glymphatic-pathway-modeled-by-optimal-mass-transport
#2
Vadim Ratner, Yi Gao, Hedok Lee, Rena Elkin, Maiken Nedergaard, Helene Benveniste, Allen Tannenbaum
The glymphatic pathway is a system which facilitates continuous cerebrospinal fluid (CSF) and interstitial fluid (ISF) exchange and plays a key role in removing waste products from the rodent brain. Dysfunction of the glymphatic pathway may be implicated in the pathophysiology of Alzheimer's disease. Intriguingly, the glymphatic system is most active during deep wave sleep general anesthesia. By using paramagnetic tracers administered into CSF of rodents, we previously showed the utility of MRI in characterizing a macroscopic whole brain view of glymphatic transport but we have yet to define and visualize the specific flow patterns...
March 16, 2017: NeuroImage
https://www.readbyqxmd.com/read/28300680/evaluation-by-mri-of-silent-brain-infarcts-in-pre-and-post-operative-asymptomatic-carotid-surgery
#3
Remy Pascot, Anne Daoudal, Alain Cardon, Gilles Godet, Antoine Lucas, Elodie Clochard, Jean-Yves Gauvrit, Yann Le Teurnier, Adrien Kaladji
OBJECTIVE: To report the prevalence of Silent Brain Infarcts (SBI) at MRI before and after surgery for asymptomatic high grade carotid stenosis. DESIGN: Single-center retrospective observational study METHODS: Asymptomatic patients who underwent carotid endarterectomy between October 2012 and October 2014 were included. The preoperative assessment included a Doppler and a CT scan dating less than 3 months. A neurological examination was performed during the anesthesia consultation and in the 15 days before surgery...
March 11, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28293478/disrupted-brain-network-functional-dynamics-and-hyper-correlation-of-structural-and-functional-connectome-topology-in-patients-with-breast-cancer-prior-to-treatment
#4
Shelli R Kesler, Marjorie Adams, Melissa Packer, Vikram Rao, Ashley M Henneghan, Douglas W Blayney, Oxana Palesh
INTRODUCTION: Several previous studies have demonstrated that cancer chemotherapy is associated with brain injury and cognitive dysfunction. However, evidence suggests that cancer pathogenesis alone may play a role, even in non-CNS cancers. METHODS: Using a multimodal neuroimaging approach, we measured structural and functional connectome topology as well as functional network dynamics in newly diagnosed patients with breast cancer. Our study involved a novel, pretreatment assessment that occurred prior to the initiation of any cancer therapies, including surgery with anesthesia...
March 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28293468/a-method-for-independent-component-graph-analysis-of-resting-state-fmri
#5
Demetrius Ribeiro de Paula, Erik Ziegler, Pubuditha M Abeyasinghe, Tushar K Das, Carlo Cavaliere, Marco Aiello, Lizette Heine, Carol di Perri, Athena Demertzi, Quentin Noirhomme, Vanessa Charland-Verville, Audrey Vanhaudenhuyse, Johan Stender, Francisco Gomez, Jean-Flory L Tshibanda, Steven Laureys, Adrian M Owen, Andrea Soddu
INTRODUCTION: Independent component analysis (ICA) has been extensively used for reducing task-free BOLD fMRI recordings into spatial maps and their associated time-courses. The spatially identified independent components can be considered as intrinsic connectivity networks (ICNs) of non-contiguous regions. To date, the spatial patterns of the networks have been analyzed with techniques developed for volumetric data. OBJECTIVE: Here, we detail a graph building technique that allows these ICNs to be analyzed with graph theory...
March 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28261040/changes-in-cerebral-blood-flow-during-an-alteration-in-glycemic-state-in-a-large-non-human-primate-papio-hamadryas-sp
#6
Peter Kochunov, Hsiao-Ying Wey, Peter T Fox, Jack L Lancaster, Michael D Davis, Danny J J Wang, Ai-Ling Lin, Raul A Bastarrachea, Marcia C R Andrade, Vicki Mattern, Patrice Frost, Paul B Higgins, Anthony G Comuzzie, Venkata S Voruganti
Changes in cerebral blood flow (CBF) during a hyperglycemic challenge were mapped, using perfusion-weighted MRI, in a group of non-human primates. Seven female baboons were fasted for 16 h prior to 1-h imaging experiment, performed under general anesthesia, that consisted of a 20-min baseline, followed by a bolus infusion of glucose (500 mg/kg). CBF maps were collected every 7 s and blood glucose and insulin levels were sampled at regular intervals. Blood glucose levels rose from 51.3 ± 10.9 to 203.9 ± 38...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28257917/transperineal-ultrasound-as-a-tool-to-plan-surgical-strategies-in-pediatric-urology-back-to-the-future
#7
Lisieux Eyer de Jesus, T Fazecas, B G Ribeiro, S Dekermacher
OBJECTIVE: To demonstrate the usefulness and advantages of transperineal ultrasound (TPUS) on planning the surgical tactics to treat childhood pelviperineal disease (CPPD). METHODS: A cohort of CPPD is reviewed to provide a pictorial review of TPUS as imaging method variety of CPPD. Other imaging methods are compared with TPUS. RESULTS: TPUS studies of patients showing different conditions on the spectrum of pelviperineal malformation are shown in detail (pictorial review, graphically shown-see figures in the article and as supplementary material), highlighting the advantages of the method and comparing TPUS findings with other imaging techniques...
February 28, 2017: Urology
https://www.readbyqxmd.com/read/28251170/presentation-of-massive-orbital-hidrocystoma-at-birth-case-report-and-review-of-the-literature
#8
Bahram Eshraghi, Mohammad-Ali Abtahi, Seyed Ali Sonbolastan, Zahra Kasaie, Seyed-Hossein Abtahi
BACKGROUND: Hidrocystoma, or sudoriferous cyst, is an eyelid tumor originating from apocrine or eccrine sweat glands. Its presence in the orbit is relatively rare. CASE PRESENTATION: A full-term female child with severe right eye extrusion was referred to our department two hours after birth. We performed cyst aspiration under ultrasonic guidance; 15 cc straw-colored fluid was obtained and proptosis resolved significantly. Orbital magnetic resonance imaging (MRI) showed a large unilocular retrobulbar mass with hypo-intensity in T1 and hyper-intensity in T2...
2017: Eye and Vision (London, England)
https://www.readbyqxmd.com/read/28243704/patients-with-high-grade-pivot-shift-phenomenon-are-associated-with-higher-prevalence-of-anterolateral-ligament-injury-after-acute-anterior-cruciate-ligament-injuries
#9
Guan-Yang Song, Hui Zhang, Guan Wu, Jin Zhang, Xin Liu, Zhe Xue, Yi Qian, Hua Feng
PURPOSE: To compare the prevalence of concomitant anterolateral ligament (ALL) injury between patients with high-grade (grades II and III) pivot-shift and those with low-grade (grades 0 and I) pivot-shift phenomenon after acute anterior cruciate ligament (ACL) injuries. METHODS: Sixty-eight patients with an acute ACL injury who showed high-grade (grades II and III) pivot-shift phenomenon were enrolled as the study group. They were matched in a 1:1 fashion to another 68 ACL-injured control participants who showed low-grade (grades 0 and I) pivot-shift phenomenon during the same study period...
February 27, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28230608/specialized-imaging-and-procedures-in-pediatric-pancreatology-a-north-american-society-for-pediatric-gastroenterology-hepatology-and-nutrition-clinical-report
#10
Tom K Lin, David M Troendle, Daniel B Wallihan, Bradley Barth, Victor L Fox, Douglas S Fishman, Veronique D Morinville
OBJECTIVES: An increasing number of children are being diagnosed with pancreatitis and other pancreatic abnormalities. Dissemination of the information regarding existing imaging techniques and endoscopic modalities to diagnose and manage pancreatic disorders in children is sorely needed. METHODS: We conducted a review of the medical literature on the use of the following imaging and procedural modalities in pediatric pancreatology: transabdominal ultrasonography (TUS), computed tomography (CT), magnetic resonance imaging (MRI)/magnetic resonance cholangiopancreatography (MRCP), endoscopic ultrasonography (EUS), and endoscopic retrograde cholangiopancreatography (ERCP)...
March 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28217389/management-of-parturients-in-active-labor-with-arnold-chiari-malformation-tonsillar-herniation-and-syringomyelia
#11
Ramsis F Ghaly, Tatiana Tverdohleb, Kenneth D Candido, Nebojsa Nick Knezevic
BACKGROUND: Arnold-Chiari malformation Type 1 (ACM-1) in parturients is a topic of ongoing discussion between obstetricians and anesthesiologists. The primary unanswered question remains; How should the anesthesia provider proceed with labor analgesia and anesthesia for cesarean section when confronted with an advanced, asymptomatic, or minimally symptomatic case of ACM-1 during labor? CASE DESCRIPTION: A 24-year-old, ASA II, G1P0 full-term parturient presented to Labor and Delivery for vaginal delivery...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28194658/the-interaction-of-intramuscular-ketorolac-toradol-and-concussion-in-a-rat-model
#12
Amanda O Esquivel, Sarah S Sherman, Cynthia A Bir, Stephen E Lemos
The purpose of this study was to examine the interaction of a single dose of Toradol and head impact in an in vivo rat model for sport-related concussion using a validated rat concussion model. Thirty-five Sprague-Dawley rats were placed into one of four groups: (1) Control, (2) Impact Only, (3) Toradol Only, (4) Impact and Toradol. Animals in the impact groups were subjected to a single head impact. Animals in the Toradol group received a single intramuscular injection of Toradol prior to impact. We examined magnetic resonance imaging, serum S100-B and cognitive function using a Morris Water Maze...
February 13, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28186470/image-guidance-based-on-mri-for-spinal-interstitial-laser-thermotherapy-technical-aspects-and-accuracy
#13
Claudio E Tatsui, Clarissa N G Nascimento, Dima Suki, Behrang Amini, Jing Li, Amol J Ghia, Jonathan G Thomas, R Jason Stafford, Laurence D Rhines, Juan P Cata, Ashok J Kumar, Ganesh Rao
OBJECTIVE Image guidance for spinal procedures is based on 3D-fluoroscopy or CT, which provide poor visualization of soft tissues, including the spinal cord. To overcome this limitation, the authors developed a method to register intraoperative MRI (iMRI) of the spine into a neuronavigation system, allowing excellent visualization of the spinal cord. This novel technique improved the accuracy in the deployment of laser interstitial thermal therapy probes for the treatment of metastatic spinal cord compression...
February 10, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28183837/diagnostic-performance-of-ultrafast-brain-mri-for-evaluation-of-abusive-head-trauma
#14
S F Kralik, M Yasrebi, N Supakul, C Lin, L G Netter, R A Hicks, R A Hibbard, L L Ackerman, M L Harris, C Y Ho
BACKGROUND AND PURPOSE: MR imaging with sedation is commonly used to detect intracranial traumatic pathology in the pediatric population. Our purpose was to compare nonsedated ultrafast MR imaging, noncontrast head CT, and standard MR imaging for the detection of intracranial trauma in patients with potential abusive head trauma. MATERIALS AND METHODS: A prospective study was performed in 24 pediatric patients who were evaluated for potential abusive head trauma...
February 9, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28181359/general-anesthesia-with-a-native-airway-for-patients-with-mucopolysaccharidosis-type-iii
#15
Mineto Kamata, Christopher McKee, Kristen V Truxal, Kevin M Flanigan, Kim L McBride, Shawn C Aylward, Joseph D Tobias, Marco Corridore
BACKGROUND: Mucopolysaccharidosis type III is a progressive disease with worsening airway, pulmonary, and cardiac involvement that may complicate anesthetic care. AIM: To prospectively evaluate the incidence of airway issues and complications during magnetic resonance imaging (MRI) and lumbar puncture (LP) during general anesthesia with a native airway for patients with mucopolysaccharidosis type III. METHOD: The study was a part of the natural history study...
February 8, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28160357/quantification-of-neonatal-lung-parenchymal-density-via-ultrashort-echo-time-mri-with-comparison-to-ct
#16
Nara S Higano, Robert J Fleck, David R Spielberg, Laura L Walkup, Andrew D Hahn, Robert P Thomen, Stephanie L Merhar, Paul S Kingma, Jean A Tkach, Sean B Fain, Jason C Woods
PURPOSE: To demonstrate that ultrashort echo time (UTE) magnetic resonance imaging (MRI) can achieve computed tomography (CT)-like quantification of lung parenchyma in free-breathing, non-sedated neonates. Because infant CTs are used sparingly, parenchymal disease evaluation via UTE MRI has potential for translational impact. MATERIALS AND METHODS: Two neonatal control cohorts without suspected pulmonary morbidities underwent either a research UTE MRI (n = 5; 1...
February 3, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28140423/obstetrisk-nervp%C3%A3-verkan-%C3%A3-r-oftast-inte-ryggbed%C3%A3-vningens-fel
#17
Lovisa Brehmer, Johan Rutfors
Postpartum nerve injury is usually not caused by neuroaxial anesthesia - a case report In this case report we describe a woman who after giving birth had numbness and could not support her weight on the right leg. Three attempts of epidural anesthesia had been made during labor. MRI imaging of the spinal cord showed no pathology. She was treated conservatively by a physiotherapist and recovered gradually. After six months all symptoms had resolved. Postpartum nerve injury is often thought to be due to neuroaxial anesthesia, although in most cases it is caused by labor itself...
January 27, 2017: Läkartidningen
https://www.readbyqxmd.com/read/28128026/amide-proton-transfer-weighted-mri-detection-of-traumatic-brain-injury-in-rats
#18
Hong Zhang, Wenzhu Wang, Shanshan Jiang, Yi Zhang, Hye-Young Heo, Xianlong Wang, Yun Peng, Jian Wang, Jinyuan Zhou
The purpose of this study was to explore the capability and uniqueness of amide proton transfer-weighted (APTw) imaging in the detection of primary and secondary injury after controlled cortical impact (CCI)-induced traumatic brain injury (TBI) in rats. Eleven adult rats had craniotomy plus CCI surgery under isoflurane anesthesia. Multi-parameter MRI data were acquired at 4.7 T, at eight time points (1, 6 h, and 1, 2, 3, 7, 14, and 28 days after TBI). At one and six hours post-injury, average APTw signal intensities decreased significantly in the impacted and peri-lesional areas due to tissue acidosis...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28120090/radioguided-occult-lesion-localization-in-deep-schwannomas-of-the-peripheral-nerves-results-of-a-preliminary-case-series
#19
Giorgio Stevanato, Giovanni Monteleone, Donatella Sgubin, Michele Sicolo, Giulia Pastorello, Luca Vazzana, Franco Guida
BACKGROUND: The detection of small deep schwannomas of the peripheral nerves has been increasing since the the use of precise neuroimaging techniques has become more widespread; however, although nonpalpable lesions can be well defined by images, it is often difficult to identify them during the surgical procedure. The authors report seven cases of nonpalpable small deep schwannomas surgically treated after their identification using the radioguided occult lesion localization (ROLL) technique...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28108938/preoperative-work-up-for-definition-of-lymph-node-risk-involvement-in-early-stage-endometrial-cancer-5-year-follow-up
#20
Pietro Cignini, Salvatore Giovanni Vitale, Antonio Simone Laganà, Antonio Biondi, Valentina Lucia La Rosa, Giuseppe Cutillo
This prospective cohort study aimed to analyze the accuracy of magnetic resonance imaging (MRI) and hysteroscopic excisional biopsy (HEB) for predicting the low- and high-risk patients with endometrial carcinoma for nodal involvement at preoperative evaluation. From January 2005 to December 2006, all patients with a diagnosis of endometrial carcinoma were prospectively included in the study and underwent pelvic MRI and HEB. The pelvic MRI (without contrast) was aimed to evaluate the extent of myometrial invasion (MI < 50%, MI ≥ 50%), the possible involvement of cervical stroma, the ovarian, and lymph nodes status...
January 20, 2017: Updates in Surgery
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